/* Hallmark · macrostructure: Workbench · tone: austere · anchor hue: neutral (ink) */
/* Hallmark · pre-emit critique: P5 H4 E5 S4 R5 V5 · contrast: pass (40-41) · nav: N7 · footer: Ft4 · slop: pass (42-45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48) · responsive: pass (49) · icons: pass (30) · mobile: pass (34, 49, 50-57) */
/* Design system: design.md (project root). Canonical token source: tokens.css (project root).
   Propshaft does not resolve @import, so the token block is inlined here. */

:root {
    --color-paper:      oklch(96% 0.01 80);
    --color-paper-2:    oklch(93% 0.012 80);
    --color-paper-3:    oklch(89% 0.014 80);
    --color-ink:        oklch(16% 0.02 80);
    --color-ink-2:      oklch(30% 0.018 80);
    --color-rule:       oklch(86% 0.012 80);
    --color-rule-2:     oklch(72% 0.016 80);
    --color-muted:      oklch(50% 0.014 80);
    --color-accent:     oklch(16% 0.02 80);
    --color-accent-ink: oklch(96% 0.01 80);
    --color-focus:      oklch(16% 0.02 80);
    --color-success:    oklch(42% 0.09 150);
    --color-danger:     oklch(50% 0.16 27);

    --template-modern:    #4f46e5;
    --template-classic:   #1f2937;
    --template-business:  #2563eb;
    --template-elegant:   #be123c;
    --template-nature:    #047857;
    --template-ink:       oklch(100% 0 0);

    --font-display: "Archivo Black", "Archivo", ui-sans-serif, system-ui, sans-serif;
    --font-body:    "Archivo", ui-sans-serif, system-ui, sans-serif;
    --font-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

    --display-weight: 400;
    --display-style:  normal;
    --tracking-display: -0.01em;
    --tracking-label:   0.08em;

    --space-3xs: 0.25rem;
    --space-2xs: 0.5rem;
    --space-xs:  0.75rem;
    --space-sm:  1rem;
    --space-md:  1.5rem;
    --space-lg:  2rem;
    --space-xl:  3rem;
    --space-2xl: 4.5rem;
    --space-3xl: 7rem;
    --space-4xl: 11rem;

    --text-xs:      0.75rem;
    --text-sm:      0.875rem;
    --text-md:      1.125rem;
    --text-lg:      1.375rem;
    --text-xl:      1.75rem;
    --text-2xl:     2.25rem;
    --text-3xl:     3rem;
    --text-display: clamp(2.25rem, 4vw + 1rem, 4rem);

    --rule-hair: 1px;
    --rule-fine: 2px;
    --radius-card:  0;
    --radius-pill:  0;
    --radius-input: 0;
    --banner-height: 4.125rem;

    --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in:     cubic-bezier(0.7, 0, 0.84, 0);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

    --dur-fast: 120ms;
    --dur-base: 180ms;
    --dur-slow: 260ms;

    color-scheme: light;
}

[data-theme="dark"] {
    --color-paper:      oklch(17% 0.01 80);
    --color-paper-2:    oklch(20% 0.012 80);
    --color-paper-3:    oklch(24% 0.014 80);
    --color-ink:        oklch(95% 0.012 80);
    --color-ink-2:      oklch(78% 0.014 80);
    --color-rule:       oklch(30% 0.014 80);
    --color-rule-2:     oklch(45% 0.016 80);
    --color-muted:      oklch(80% 0.014 80);
    --color-accent:     oklch(95% 0.012 80);
    --color-accent-ink: oklch(17% 0.01 80);
    --color-focus:      oklch(95% 0.012 80);
    --color-success:    oklch(62% 0.1 150);
    --color-danger:     oklch(62% 0.16 27);

    color-scheme: dark;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    overflow-x: clip;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: clip;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-ink);
    background: var(--color-paper);
    min-height: 100dvh;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: var(--display-weight);
    font-style: var(--display-style);
    letter-spacing: var(--tracking-display);
    line-height: 1.05;
    overflow-wrap: anywhere;
    min-width: 0;
}

a {
    color: var(--color-ink);
    text-underline-offset: 3px;
}

:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -3rem;
    left: 0;
    z-index: 200;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-accent);
    color: var(--color-accent-ink);
    font-weight: 600;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* ── Nav · N7 brutal slab ──────────────────────────────────────────────── */

.navbar {
    position: sticky;
    top: 0;
    z-index: 110;
    background: var(--color-paper);
    border-bottom: var(--rule-fine) solid var(--color-ink);
}

.navbar-inner {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) clamp(var(--space-sm), 4vw, var(--space-lg));
    min-height: 3.5rem;
}

.hamburger-toggle {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    flex: 0 0 auto;
    background: var(--color-paper);
    color: var(--color-ink);
    border: var(--rule-fine) solid var(--color-ink);
    cursor: pointer;
    transition: background-color var(--dur-base) var(--ease-out);
}

.hamburger-toggle:hover {
    background: var(--color-paper-3);
}

.hamburger-toggle:active {
    transform: translateY(1px);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    text-decoration: none;
    white-space: nowrap;
    min-width: 0;
}

.navbar-logo {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    flex: 0 0 auto;
    background: var(--color-accent);
    color: var(--color-accent-ink);
}

.navbar-title {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.navbar-badge {
    display: none;
    padding: 0 var(--space-2xs);
    border: var(--rule-hair) solid var(--color-rule-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-muted);
    white-space: nowrap;
}

.navbar-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    margin-left: auto;
}

.save-status {
    display: none;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    white-space: nowrap;
}

.save-status.visible {
    display: inline;
}

.save-status.saved {
    color: var(--color-success);
}

.language-select {
    height: 2.5rem;
    padding: 0 var(--space-2xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    font-size: var(--text-sm);
    cursor: pointer;
}

.language-select:hover {
    border-color: var(--color-ink);
}

.theme-toggle {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    flex: 0 0 auto;
    background: var(--color-paper);
    color: var(--color-ink);
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
    transition: background-color var(--dur-base) var(--ease-out);
}

.theme-toggle:hover {
    background: var(--color-paper-3);
    border-color: var(--color-ink);
}

.theme-toggle:active {
    transform: translateY(1px);
}

.theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}

/* ── Sidebar · history rail ────────────────────────────────────────────── */

.sidebar {
    position: fixed;
    top: var(--banner-height);
    left: 0;
    width: min(20rem, 84vw);
    height: calc(100dvh - var(--banner-height));
    background: var(--color-paper-2);
    border-right: var(--rule-fine) solid var(--color-ink);
    z-index: 250;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateX(-100%);
    transition: transform var(--dur-base) var(--ease-out);
}

.sidebar.open {
    transform: translateX(0);
}

.section-action-btn {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    background: transparent;
    border: var(--rule-hair) solid var(--color-rule-2);
    color: var(--color-ink-2);
    padding: 0.2rem var(--space-2xs);
    cursor: pointer;
}

.section-action-btn:hover {
    border-color: var(--color-ink);
    color: var(--color-ink);
}

.num-format {
    margin-top: var(--space-3xs);
    font-size: var(--text-xs);
}

.num-format summary {
    cursor: pointer;
    color: var(--color-muted);
}

.num-format-fields {
    display: flex;
    gap: var(--space-3xs);
    padding-top: var(--space-3xs);
}

.num-format-fields input {
    min-width: 0;
}

.payments-tools {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    margin-top: var(--space-2xs);
}

.late-fee-label {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
}

.late-fee-label input {
    width: 4.5rem;
    min-width: 0;
    padding: 0.2rem;
}

.payments-panel {
    margin-top: var(--space-2xs);
    border-top: var(--rule-hair) solid var(--color-rule);
    padding-top: var(--space-2xs);
}

.payment-row {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    font-size: var(--text-sm);
    padding: 0.15rem 0;
}

.payment-row-amount {
    margin-left: auto;
    font-family: var(--font-mono);
}

.payment-add-row {
    display: flex;
    gap: var(--space-3xs);
    margin-top: var(--space-3xs);
}

.payment-add-row input {
    min-width: 0;
    flex: 0 1 auto;
}

.balance-due-row {
    font-weight: 600;
}

.template-more-link {
    margin: var(--space-2xs) 0 0;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
}

.template-more-link a {
    color: var(--color-muted);
    text-decoration: none;
}

.template-more-link a:hover {
    color: var(--color-ink);
    text-decoration: underline;
}

.section-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2xs);
    padding-bottom: var(--space-sm);
    border-bottom: var(--rule-hair) solid var(--color-rule);
}

.section-nav a {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    text-decoration: none;
    color: var(--color-ink-2);
    border: var(--rule-hair) solid var(--color-rule-2);
    padding: 0.25rem var(--space-2xs);
}

.section-nav a:hover {
    background: var(--color-paper-3);
    color: var(--color-ink);
    border-color: var(--color-ink);
}

.card-section {
    scroll-margin-top: 1rem;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-ink);
    opacity: 0.4;
    z-index: 249;
    cursor: pointer;
}

.sidebar-backdrop.visible {
    display: block;
}

.sidebar::before {
    content: '';
    position: fixed;
    inset: 0;
    background: var(--color-ink);
    opacity: 0;
    pointer-events: none;
    z-index: -1;
}

.sidebar.open::before {
    opacity: 0.4;
    pointer-events: auto;
}

.sidebar-header {
    padding: var(--space-sm);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    flex: 0 0 auto;
}

.sidebar-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
}

.sidebar-title {
    font-size: var(--text-lg);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.sidebar-subtitle {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    letter-spacing: 0;
}

.sidebar-close-btn {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    flex: 0 0 auto;
    background: transparent;
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
}

.sidebar-close-btn:hover {
    background: var(--color-paper-3);
    border-color: var(--color-ink);
}

.sidebar-close-btn svg {
    width: 1rem;
    height: 1rem;
}

.sidebar-search {
    padding: var(--space-sm);
    border-bottom: var(--rule-hair) solid var(--color-rule);
    flex: 0 0 auto;
}

.sidebar-search-wrapper {
    position: relative;
}

.sidebar-search-wrapper input {
    width: 100%;
    padding: var(--space-2xs) var(--space-xl) var(--space-2xs) var(--space-2xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
}

.sidebar-search-wrapper input:focus {
    border-color: var(--color-ink);
}

.sidebar-search-clear {
    position: absolute;
    top: 50%;
    right: var(--space-2xs);
    transform: translateY(-50%);
    display: grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    background: transparent;
    border: 0;
    color: var(--color-muted);
    cursor: pointer;
    font-size: var(--text-md);
}

.sidebar-search-clear:hover {
    color: var(--color-ink);
}

.sidebar-list {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: var(--space-2xs) 0;
}

.sidebar-empty {
    padding: var(--space-lg) var(--space-sm);
    margin: var(--space-xs) var(--space-sm);
    border: var(--rule-hair) dashed var(--color-rule-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    text-align: center;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-sm);
    border-left: var(--rule-fine) solid transparent;
    cursor: pointer;
    transition: background-color var(--dur-fast) var(--ease-out);
}

.sidebar-item:hover {
    background: var(--color-paper-3);
}

.sidebar-item.active {
    background: var(--color-paper-3);
    border-left-color: var(--color-accent);
}

.sidebar-item-icon {
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    flex: 0 0 auto;
    border: var(--rule-hair) solid var(--color-rule-2);
    color: var(--color-muted);
}

.sidebar-item-icon svg {
    width: 0.875rem;
    height: 0.875rem;
}

.sidebar-item-content {
    flex: 1 1 auto;
    min-width: 0;
}

.sidebar-item-title {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-open-badge {
    padding: 0 var(--space-2xs);
    background: var(--color-accent);
    color: var(--color-accent-ink);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.sidebar-item-email {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 400;
}

.sidebar-item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    margin-top: var(--space-3xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-item-client {
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-item-amount {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
    font-weight: 500;
    color: var(--color-ink-2);
}

.sidebar-item-delete {
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    flex: 0 0 auto;
    background: transparent;
    border: var(--rule-hair) solid transparent;
    color: var(--color-muted);
    cursor: pointer;
}

.sidebar-item-delete:hover {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.sidebar-item-delete svg {
    width: 0.875rem;
    height: 0.875rem;
}

.sidebar-calendar {
    flex: 0 0 auto;
    padding: var(--space-sm);
    border-top: var(--rule-hair) solid var(--color-rule);
}

.sidebar-calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2xs);
}

.sidebar-calendar-nav {
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    background: transparent;
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
}

.sidebar-calendar-nav:hover {
    border-color: var(--color-ink);
}

.sidebar-calendar-month {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
}

.sidebar-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-3xs);
}

.cal-day {
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    border: var(--rule-hair) solid transparent;
    position: relative;
}

.cal-day-header {
    color: var(--color-muted);
    text-transform: uppercase;
    font-size: var(--text-xs);
}

.cal-day-empty {
    color: transparent;
}

.cal-today {
    border-color: var(--color-ink);
    font-weight: 500;
}

.cal-has-invoices {
    font-weight: 500;
    cursor: pointer;
}

.cal-has-invoices::after {
    content: '';
    position: absolute;
    bottom: 0.125rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0.375rem;
    height: 0.375rem;
    background: var(--color-ink);
}

.cal-has-invoices.cal-active {
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border-color: var(--color-accent);
}

.cal-has-invoices.cal-active::after {
    background: var(--color-accent-ink);
}

.cal-has-invoices:hover {
    border-color: var(--color-ink);
}

.cal-count {
    position: absolute;
    top: 0;
    right: 0;
    display: grid;
    place-items: center;
    min-width: 0.75rem;
    height: 0.75rem;
    padding: 0 var(--space-3xs);
    background: var(--color-accent);
    color: var(--color-accent-ink);
    font-size: var(--text-2xs);
    line-height: 1;
}

.sidebar-footer {
    padding: var(--space-sm);
    border-top: var(--rule-fine) solid var(--color-ink);
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
}

.sidebar-sync-label {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    cursor: pointer;
    font-size: var(--text-sm);
}

.sync-toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.sync-toggle-track {
    width: 2.25rem;
    height: 1.25rem;
    flex: 0 0 auto;
    border: var(--rule-hair) solid var(--color-rule-2);
    background: var(--color-paper-3);
    position: relative;
    transition: background-color var(--dur-base) var(--ease-out);
}

.sync-toggle-knob {
    position: absolute;
    top: 1px;
    left: 1px;
    width: calc(1.25rem - 2px);
    height: calc(1.25rem - 2px);
    background: var(--color-ink);
    transition: transform var(--dur-base) var(--ease-out);
}

.sync-toggle-input:checked + .sync-toggle-track {
    background: var(--color-paper);
}

.sync-toggle-input:checked + .sync-toggle-track .sync-toggle-knob {
    transform: translateX(1rem);
}

.sync-toggle-input:focus-visible + .sync-toggle-track {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.sync-icon {
    color: var(--color-muted);
    flex: 0 0 auto;
}

.sync-label-text {
    white-space: nowrap;
}

.sidebar-action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-2xs) var(--space-xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    font-size: var(--text-sm);
    cursor: pointer;
    white-space: nowrap;
    text-align: left;
    transition: background-color var(--dur-fast) var(--ease-out);
}

.sidebar-action-btn:hover {
    background: var(--color-paper-3);
    border-color: var(--color-ink);
}

.sidebar-action-btn:active {
    transform: translateY(1px);
}

/* The sidebar footer renders <button> and <a> variants of this class */
a.sidebar-action-btn {
    text-decoration: none;
    color: var(--color-ink);
}

.sidebar-action-btn svg {
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
}

.sidebar-action-btn-danger {
    color: var(--color-danger);
}

.sidebar-action-btn-danger:hover {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: var(--color-accent-ink);
}

.sidebar-logout-form {
    display: flex;
}

.sidebar-logout-form .sidebar-action-btn {
    width: 100%;
}

/* ── Layout shell ──────────────────────────────────────────────────────── */

.main-wrapper {
    min-height: 100dvh;
    transition: padding-left var(--dur-base) var(--ease-out);
}

.container {
    max-width: 70rem;
    margin: 0 auto;
    padding: 0 clamp(var(--space-sm), 4vw, var(--space-lg));
}

main#main-content {
    display: block;
}

/* ── Tool header (was hero) ────────────────────────────────────────────── */

.hero {
    padding: var(--space-lg) 0 var(--space-xl);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    margin-bottom: var(--space-lg);
}

.hero-kicker {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--space-2xs);
}

.hero h1 {
    font-size: var(--text-display);
    text-transform: uppercase;
    max-width: 24ch;
}

.hero h1 span {
    display: block;
}

.hero p {
    margin-top: var(--space-xs);
    max-width: 46ch;
    font-size: var(--text-md);
    color: var(--color-ink-2);
}

.hero-actions {
    margin-top: var(--space-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--dur-fast) var(--ease-out);
}

.hero-btn:hover {
    background: var(--color-ink);
    color: var(--color-accent-ink);
}

.hero-btn:active {
    transform: translateY(1px);
}

.hero-btn svg {
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
}

/* ── Template selector ─────────────────────────────────────────────────── */

.template-section {
    margin-bottom: var(--space-lg);
}

.template-fieldset {
    border: 0;
    padding: 0;
}

.template-title {
    display: block;
    padding-bottom: var(--space-2xs);
    margin-bottom: var(--space-xs);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-ink-2);
}

.template-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 6.5rem), 1fr));
    gap: var(--space-2xs);
}

.template-option {
    position: relative;
}

.template-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.template-option label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-sm) var(--space-2xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
    text-align: center;
    transition: border-color var(--dur-fast) var(--ease-out);
}

.template-option label:hover {
    border-color: var(--color-ink);
}

.template-option input[type="radio"]:checked + label {
    border: var(--rule-fine) solid var(--color-ink);
    background: var(--color-paper-3);
}

.template-option input[type="radio"]:focus-visible + label {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.template-icon {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    background: var(--color-accent);
    color: var(--template-ink);
    font-family: var(--font-display);
    font-size: var(--text-sm);
}

.template-modern1 .template-icon {
    background: var(--template-modern);
}

.template-classic .template-icon {
    background: var(--template-classic);
}

.template-business .template-icon {
    background: var(--template-business);
}

.template-elegant .template-icon {
    background: var(--template-elegant);
}

.template-nature .template-icon {
    background: var(--template-nature);
}

.template-option span {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    white-space: nowrap;
}

/* ── Invoice card · form workbench ─────────────────────────────────────── */

.invoice-card {
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    margin-bottom: var(--space-lg);
}

.card-section {
    padding: var(--space-lg);
    border-bottom: var(--rule-fine) solid var(--color-rule);
}

.card-section:last-child {
    border-bottom: 0;
}

.card-section-title {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    padding-bottom: var(--space-sm);
    margin-bottom: var(--space-md);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    font-size: var(--text-lg);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.card-section-title svg {
    width: 1.25rem;
    height: 1.25rem;
    flex: 0 0 auto;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.form-group {
    min-width: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2xs);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-ink-2);
}

.form-group input,
.form-group textarea,
.form-group select,
.due-date-preset,
.status-select,
.currency-select,
.history-select,
.discount-type-select {
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    border-radius: var(--radius-input);
    transition: border-color var(--dur-fast) var(--ease-out);
}

.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
    border-color: var(--color-ink-2);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-ink);
}

.form-group input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-group textarea {
    min-height: 5.5rem;
    resize: vertical;
}

.form-group .error {
    display: block;
    margin-top: var(--space-2xs);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-danger);
    min-height: 1rem;
}

.form-group input.invalid,
.form-group textarea.invalid,
.form-group select.invalid {
    border: var(--rule-fine) solid var(--color-danger);
}

/* meta-row — fixed: had no base grid rule, only media-query overrides */
.meta-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
    gap: var(--space-md);
}

.due-date-row {
    display: flex;
    gap: var(--space-2xs);
}

/* Override .form-group input/select { width: 100% }: inside the row,
   widths are negotiated by flexbox. The old .due-date-preset rule
   (width: auto) lost the specificity battle against
   .form-group select (0,1,1 vs 0,1,0), so with flex-shrink: 0 the
   Terms select rendered at full row width and overflowed its grid
   cell over the PO Number field next door. */
.form-group .due-date-row input,
.form-group .due-date-row select {
    width: auto;
    min-width: 0;
}

.form-group .due-date-row input {
    flex: 1 1 auto;
}

.form-group .due-date-row select {
    flex: 1 1 auto;
}

.form-group .due-date-row .bulk-action-btn {
    flex: 0 0 auto;
}

/* ── Line items ────────────────────────────────────────────────────────── */

.table-wrapper {
    overflow-x: auto;
    border: var(--rule-hair) solid var(--color-rule);
}

.line-items {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
    min-width: 46rem;
}

.line-items th {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-paper-3);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    text-align: left;
    white-space: nowrap;
}

.line-items td {
    padding: var(--space-xs) var(--space-sm);
    border-bottom: var(--rule-hair) solid var(--color-rule);
    vertical-align: top;
}

.line-items tbody tr:last-child td {
    border-bottom: 0;
}

.line-items tbody tr:hover {
    background: var(--color-paper-2);
}

.line-items input,
.line-items textarea {
    width: 100%;
    padding: var(--space-2xs) var(--space-xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    border-radius: var(--radius-input);
}

.line-items input:hover,
.line-items textarea:hover {
    border-color: var(--color-ink-2);
}

.line-items input:focus,
.line-items textarea:focus {
    border-color: var(--color-ink);
}

.line-items input.zero-hint {
    border-color: var(--color-rule);
    color: var(--color-muted);
}

.line-items .item-quantity,
.line-items .item-rate,
.line-items .item-tax,
.item-amount,
.tax-amount,
#subtotal,
#total-tax,
#grand-total,
#discount {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.item-amount,
.tax-amount {
    font-size: var(--text-sm);
    color: var(--color-ink-2);
}

.tax-cell {
    min-width: 8rem;
}

.actions-col {
    width: 3rem;
    text-align: center;
}

.delete-row-btn {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    margin: 0 auto;
    background: transparent;
    border: var(--rule-hair) solid transparent;
    color: var(--color-muted);
    cursor: pointer;
}

.delete-row-btn:hover:not(:disabled) {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.delete-row-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.delete-row-btn svg {
    width: 1rem;
    height: 1rem;
}

.line-items tbody tr.empty-row td {
    border-bottom-style: dashed;
    color: var(--color-muted);
}

.line-items tbody tr.empty-row:hover {
    background: transparent;
}

.add-item-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-md);
    margin-top: var(--space-md);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--dur-fast) var(--ease-out);
}

.add-item-btn:hover {
    background: var(--color-ink);
    color: var(--color-accent-ink);
}

.add-item-btn:active {
    transform: translateY(1px);
}

.add-item-btn svg {
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
}

.bulk-actions {
    margin-top: var(--space-md);
    display: flex;
}

.bulk-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-2xs) var(--space-sm);
    background: transparent;
    border: 0;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.bulk-action-btn:hover {
    color: var(--color-danger);
}

/* ── Totals ────────────────────────────────────────────────────────────── */

.totals-wrapper {
    margin-top: var(--space-lg);
    display: flex;
    justify-content: flex-end;
}

.totals {
    width: 100%;
    max-width: 26rem;
}

.totals-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-xs) 0;
    border-bottom: var(--rule-hair) solid var(--color-rule);
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

.totals-row > span:first-child {
    color: var(--color-ink-2);
}

.discount-label-row {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
}

.discount-type-select {
    width: auto;
    padding: var(--space-3xs) var(--space-2xs);
    font-size: var(--text-xs);
}

.totals-row input#discount {
    width: 8rem;
    padding: var(--space-3xs) var(--space-xs);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    border-radius: var(--radius-input);
    text-align: right;
}

.totals-row.total {
    border-bottom: var(--rule-fine) solid var(--color-ink);
    border-top: var(--rule-fine) solid var(--color-ink);
    margin-top: var(--space-2xs);
    font-size: var(--text-md);
    font-weight: 500;
}

/* ── Logo upload ───────────────────────────────────────────────────────── */

.logo-upload {
    margin-top: var(--space-lg);
    border-top: var(--rule-hair) solid var(--color-rule);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.logo-upload-label,
.payment-details-label {
    display: block;
    margin-bottom: var(--space-2xs);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-ink-2);
}

.logo-upload-area {
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
    transition: border-color var(--dur-fast) var(--ease-out);
}

.logo-upload-area:hover {
    border-color: var(--color-ink);
}

.logo-upload-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-md);
    min-height: 5rem;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
}

.logo-upload-placeholder svg {
    width: 1.5rem;
    height: 1.5rem;
    flex: 0 0 auto;
}

.logo-preview {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
}

.logo-preview img {
    max-width: 12rem;
    max-height: 6rem;
    display: block;
    border: var(--rule-hair) solid var(--color-rule);
}

.logo-remove-btn {
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
}

.logo-remove-btn:hover {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* ── Payment details ───────────────────────────────────────────────────── */

.payment-details {
    margin-top: var(--space-lg);
    border-top: var(--rule-hair) solid var(--color-rule);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.payment-grid .full-width {
    grid-column: 1 / -1;
}

/* ── Sticky action bar · C4 ────────────────────────────────────────────── */

.action-toolbar {
    position: sticky;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2xs);
    padding: var(--space-sm) clamp(var(--space-sm), 4vw, var(--space-lg));
    background: var(--color-paper);
    border-top: var(--rule-fine) solid var(--color-ink);
    margin: 0 calc(-1 * clamp(var(--space-sm), 4vw, var(--space-lg)));
}

.toolbar-reassure {
    font-family: var(--font-mono);
    font-size: var(--text-2xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
    flex: 1 1 100%;
    margin: 0 0 var(--space-2xs);
}

@media (min-width: 720px) {
    .toolbar-reassure {
        flex: 1 1 auto;
        margin: 0;
        order: -1;
    }
}

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.action-btn:active {
    transform: translateY(1px);
}

.action-btn svg {
    width: 1rem;
    height: 1rem;
    flex: 0 0 auto;
}

.action-btn-secondary:hover {
    background: var(--color-paper-3);
}

.action-btn-primary {
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border-color: var(--color-accent);
}

.action-btn-primary:hover {
    background: var(--color-accent-ink);
    color: var(--color-accent);
}

.action-btn-primary:disabled {
    opacity: 0.6;
    cursor: wait;
}

.action-btn-danger {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.action-btn-danger:hover {
    background: var(--color-danger);
    color: var(--color-accent-ink);
}

/* ── Preview modal ─────────────────────────────────────────────────────── */

.modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: none;
}

.modal.open {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--color-ink);
    opacity: 0.7;
}

.modal-content {
    position: relative;
    z-index: 1;
    margin: auto;
    width: min(92vw, 52rem);
    max-height: 92dvh;
    display: flex;
    flex-direction: column;
    background: var(--color-paper-2);
    border: var(--rule-fine) solid var(--color-ink);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-bottom: var(--rule-fine) solid var(--color-ink);
    flex: 0 0 auto;
}

.modal-header h2 {
    font-size: var(--text-md);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
}

.modal-close {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    background: transparent;
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
    font-size: var(--text-lg);
    line-height: 1;
}

.modal-close:hover {
    border-color: var(--color-ink);
    background: var(--color-paper-3);
}

.modal-body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: var(--space-md);
}

#preview-container .preview-page {
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    margin-bottom: var(--space-sm);
}

/* Scale the rendered page to the modal: the canvas is painted at
   _pdfScale (1.5x ≈ 1224px for US Letter), far wider than the 52rem
   modal. width:100% fits it; renderPDFPage overrides the inline width
   when the user zooms past 100%. */
#preview-container .preview-page canvas {
    display: block;
    width: 100%;
    height: auto;
}

#preview-container .preview-page:last-child {
    margin-bottom: 0;
}

.preview-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-xl);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-muted);
}

.preview-loading .spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--color-rule);
    border-top-color: var(--color-ink);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.preview-navbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-top: var(--rule-fine) solid var(--color-ink);
    flex: 0 0 auto;
}

.preview-nav-btn {
    display: grid;
    place-items: center;
    width: 2.25rem;
    height: 2.25rem;
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    cursor: pointer;
}

.preview-nav-btn:hover:not(:disabled) {
    border-color: var(--color-ink);
    background: var(--color-paper-3);
}

.preview-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.preview-nav-btn svg {
    width: 1rem;
    height: 1rem;
}

.preview-zoom-controls {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
}

.page-info,
.zoom-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    padding: var(--space-sm) var(--space-md);
    border-top: var(--rule-fine) solid var(--color-ink);
    flex: 0 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.btn:hover {
    background: var(--color-paper-3);
}

.btn:active {
    transform: translateY(1px);
}

.btn-success {
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border-color: var(--color-accent);
}

.btn-success:hover {
    background: var(--color-accent-ink);
    color: var(--color-accent);
}

.btn-danger {
    background: var(--color-paper);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.btn-danger:hover {
    background: var(--color-danger);
    color: var(--color-accent-ink);
}

/* ── Confirm dialog ────────────────────────────────────────────────────── */

.confirm-backdrop {
    position: fixed;
    inset: 0;
    z-index: 400;
    background: var(--color-ink);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-out);
}

.confirm-backdrop.show {
    opacity: 0.6;
    pointer-events: auto;
}

.confirm-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -46%);
    z-index: 401;
    width: min(92vw, 26rem);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.confirm-dialog.show {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%);
}

.confirm-dialog-content {
    padding: var(--space-lg);
}

.confirm-dialog-icon {
    width: 2.5rem;
    height: 2.5rem;
    display: grid;
    place-items: center;
    margin-bottom: var(--space-sm);
    border: var(--rule-hair) solid var(--color-danger);
    color: var(--color-danger);
}

.confirm-dialog-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.confirm-dialog-message {
    font-size: var(--text-md);
    margin-bottom: var(--space-md);
}

.confirm-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-xs);
}

.confirm-dialog-actions .btn {
    padding: var(--space-xs) var(--space-md);
}

/* ── Toast ─────────────────────────────────────────────────────────────── */

.toast {
    position: fixed;
    top: calc(3.5rem + var(--space-sm));
    right: var(--space-sm);
    z-index: 500;
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
    width: min(92vw, 24rem);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    opacity: 0;
    transform: translateY(-0.5rem);
    pointer-events: none;
    transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.toast-icon {
    flex: 0 0 auto;
}

.toast-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-error .toast-icon {
    color: var(--color-danger);
}

.toast-content {
    flex: 1 1 auto;
    font-size: var(--text-sm);
    min-width: 0;
}

.toast-action {
    padding: var(--space-2xs) var(--space-xs);
    background: transparent;
    border: var(--rule-hair) solid var(--color-ink);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.toast-action:hover {
    background: var(--color-ink);
    color: var(--color-accent-ink);
}

.toast-close {
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    flex: 0 0 auto;
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--color-muted);
    font-size: var(--text-md);
    line-height: 1;
}

.toast-close:hover {
    color: var(--color-ink);
}

.toast-has-action .toast-content {
    max-width: calc(100% - 9rem);
}

/* ── Footer · Ft4 dense colophon ───────────────────────────────────────── */

/* Colophon footer (design.md Ft4) — columns come from the landing registry */
.site-footer-colophon {
    border-top: var(--rule-fine) solid var(--color-ink);
    padding: var(--space-lg) var(--space-lg);
    background: var(--color-paper-2);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    max-width: 72rem;
    margin: 0 auto;
}

.footer-wordmark {
    font-family: var(--font-display);
    font-size: var(--text-md);
    line-height: 1.05;
    margin: 0 0 var(--space-xs);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin: 0 0 var(--space-xs);
}

.footer-fine {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
}

.footer-heading {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 var(--space-xs);
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links a {
    display: inline-block;
    padding: 0.15rem 0;
    font-size: var(--text-sm);
    color: var(--color-ink-2);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--color-ink);
    text-decoration: underline;
}

/* ---- Landing pages ---- */
.landing-page {
    background: var(--color-paper);
}

.landing-navbar {
    position: static;
}

.landing-main {
    max-width: 46rem;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg) var(--space-2xl);
}

.breadcrumbs {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    margin-bottom: var(--space-lg);
}

.breadcrumbs a {
    color: var(--color-muted);
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: var(--color-ink);
    text-decoration: underline;
}

.landing-h1 {
    font-family: var(--font-display);
    font-size: var(--text-display, clamp(2.25rem, 4vw + 1rem, 4rem));
    letter-spacing: -0.01em;
    line-height: 1.02;
    margin: 0 0 var(--space-sm);
}

.landing-intro {
    font-size: var(--text-md);
    color: var(--color-ink-2);
    margin: 0 0 var(--space-md);
}

.landing-body p {
    max-width: 42rem;
    font-size: var(--text-sm);
    line-height: 1.7;
    color: var(--color-ink-2);
    margin: 0 0 var(--space-md);
}

.landing-cta-row {
    margin: 0 0 var(--space-xl);
}

.landing-cta {
    display: inline-block;
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: var(--text-sm);
    background: var(--color-ink);
    color: var(--color-paper);
    border: 2px solid var(--color-ink);
    padding: var(--space-2xs) var(--space-sm);
    text-decoration: none;
}

.landing-cta:hover {
    background: transparent;
    color: var(--color-ink);
}

.landing-benefits {
    display: grid;
    gap: var(--space-md);
    border-top: var(--rule-fine) solid var(--color-ink);
    padding-top: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.landing-benefit h2,
.landing-faqs h2,
.landing-related h2 {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 var(--space-2xs);
}

.landing-benefit p {
    margin: 0;
    color: var(--color-ink-2);
}

.landing-faqs {
    border-top: var(--rule-hair) solid var(--color-rule);
    padding-top: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.landing-faq {
    border-bottom: var(--rule-hair) solid var(--color-rule);
    padding: var(--space-2xs) 0;
}

.landing-faq summary {
    cursor: pointer;
    font-weight: 600;
}

.landing-faq p {
    color: var(--color-ink-2);
}

.landing-related ul {
    list-style: square;
    padding-left: 1.25rem;
}

.landing-related a {
    color: var(--color-ink);
}

.site-footer {
    margin-top: var(--space-xl);
    padding: var(--space-md) clamp(var(--space-sm), 4vw, var(--space-lg));
    border-top: var(--rule-fine) solid var(--color-ink);
    background: var(--color-paper-2);
}

.site-footer p {
    max-width: 70rem;
    margin: 0 auto;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
    line-height: 1.8;
}

/* ── Auth pages ────────────────────────────────────────────────────────── */

.auth-page .navbar {
    display: none;
}

.auth-page .site-footer {
    display: none;
}

.auth-form-wrapper {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.auth-form-card {
    width: 100%;
    max-width: 26rem;
    background: var(--color-paper);
    border: var(--rule-fine) solid var(--color-ink);
    padding: var(--space-xl) var(--space-lg);
}

.auth-form-card h1 {
    font-size: var(--text-2xl);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    margin-bottom: var(--space-2xs);
}

.auth-subtitle {
    margin-bottom: var(--space-lg);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-muted);
}

.auth-form-card .field {
    margin-bottom: var(--space-md);
}

.auth-form-card .field label {
    display: block;
    margin-bottom: var(--space-2xs);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-ink-2);
}

.auth-form-card .field input {
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-paper);
    border: var(--rule-hair) solid var(--color-rule-2);
    border-radius: var(--radius-input);
}

.auth-form-card .field input:focus {
    border-color: var(--color-ink);
}

.auth-form-card .field input.invalid {
    border-color: var(--color-danger);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--space-2xs);
}

.auth-form-card .checkbox-group input[type="checkbox"] {
    width: auto;
    flex: none;
}

.auth-form-card .checkbox-group label {
    display: inline;
    margin-bottom: 0;
    text-transform: none;
    letter-spacing: normal;
    font-size: var(--text-sm);
    color: var(--color-ink);
}

.auth-form-card .actions {
    margin-top: var(--space-lg);
}

.auth-form-card .actions input[type="submit"],
.auth-form-card .actions button {
    width: 100%;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-accent);
    color: var(--color-accent-ink);
    border: var(--rule-fine) solid var(--color-accent);
    font-weight: 600;
    cursor: pointer;
}

.auth-form-card .actions input[type="submit"]:hover,
.auth-form-card .actions button:hover {
    background: var(--color-accent-ink);
    color: var(--color-accent);
}

.shared-links {
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: var(--rule-hair) solid var(--color-rule);
    font-size: var(--text-sm);
}

.shared-links a {
    display: inline-block;
    margin-right: var(--space-sm);
    margin-top: var(--space-2xs);
}

/* ── Flash ─────────────────────────────────────────────────────────────── */

.notice,
.alert {
    padding: var(--space-sm) clamp(var(--space-sm), 4vw, var(--space-lg));
    border-bottom: var(--rule-fine) solid var(--color-ink);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.notice {
    background: var(--color-paper-3);
}

.alert {
    background: var(--color-danger);
    color: var(--color-accent-ink);
}

/* ── Responsive · base is mobile-first ─────────────────────────────────── */

@media (max-width: 30rem) {
    .navbar-title {
        display: none;
    }
}

@media (min-width: 40rem) {
    .form-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .navbar-badge {
        display: inline;
    }

    .hero {
        padding: var(--space-xl) 0 var(--space-2xl);
    }
}

@media (min-width: 60rem) {
    /* sidebar-aware footer gutter, structural edition: the homepage
       renders .site-footer directly under <body> (outside
       .main-wrapper), so only those need explicit gutter padding —
       footers inside .main-wrapper (landing pages) already inherit it,
       and padding both would double-indent them. */
    body > .site-footer {
        padding-left: min(20rem, 84vw);
    }

    .main-wrapper {
        padding-left: min(20rem, 84vw);
    }

    .main-wrapper.sidebar-closed {
        padding-left: 0;
    }

    .sidebar::before {
        display: none;
    }

    .sidebar-close-btn {
        display: none;
    }

    .container {
        padding: 0 var(--space-lg);
    }

    .invoice-card {
        margin-bottom: var(--space-2xl);
    }

    .form-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 90rem) {
    .container {
        max-width: 80rem;
    }
}

/* ── Reduced motion ────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ── Print ─────────────────────────────────────────────────────────────── */

@media print {
    .navbar,
    .sidebar,
    .hero,
    .template-section,
    .action-toolbar,
    .modal,
    .site-footer {
        display: none !important;
    }

    body {
        background: none;
        color: var(--color-ink);
    }

    .main-wrapper {
        padding-left: 0;
    }

    .invoice-card {
        border: 1px solid var(--color-ink);
    }

    .card-section-title,
    .line-items th {
        text-transform: none;
    }
}