:root {
    --ink: #13261d;
    --ink-soft: #516158;
    --surface: rgba(255, 255, 255, 0.92);
    --surface-strong: #ffffff;
    --line: rgba(19, 38, 29, 0.1);
    --shadow: 0 24px 55px rgba(19, 38, 29, 0.1);
    --accent: #0d6b52;
    --accent-strong: #084635;
    --accent-soft: rgba(13, 107, 82, 0.08);
    --warm: #c48a35;
    --radius-lg: 28px;
    --radius-md: 18px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background:
        radial-gradient(circle at top left, rgba(13, 107, 82, 0.16), transparent 28%),
        radial-gradient(circle at 85% 15%, rgba(196, 138, 53, 0.18), transparent 22%),
        radial-gradient(circle at 50% 100%, rgba(19, 38, 29, 0.08), transparent 30%),
        linear-gradient(140deg, #eef6f3 0%, #f8f3ea 52%, #edf2f8 100%);
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    background: transparent;
    color: var(--ink);
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

.site-shell {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.top-bar {
    background: #000000;
    color: #ffffff;
}

.top-bar__inner {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 0;
    font-size: 0.92rem;
}

.top-bar__inner p {
    margin: 0;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1rem 0;
}

.brand {
    display: inline-flex;
    flex-direction: column;
    gap: 0.15rem;
}

.brand__mark,
.section-heading h2,
.hero-card h1 {
    font-family: Georgia, "Times New Roman", serif;
}

.brand__mark {
    font-size: 1.55rem;
    font-weight: 700;
    line-height: 1;
}

.brand__sub {
    color: var(--ink-soft);
    font-size: 0.9rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.site-nav a {
    color: var(--ink-soft);
    font-weight: 600;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--accent-strong);
}

.page {
    padding: 2rem 0 4rem;
}

.hero-grid,
.workspace-grid,
.feature-grid,
.coverage-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.hero-grid,
.workspace-grid,
.feature-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.85fr);
}

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

.panel {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 1.75rem;
}

.stats-card,
.stack {
    display: grid;
    gap: 1.5rem;
}

.eyebrow {
    margin: 0 0 0.8rem;
    color: var(--accent-strong);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.hero-card h1 {
    margin: 0;
    font-size: clamp(2.4rem, 5vw, 4.15rem);
    line-height: 0.97;
    max-width: 12ch;
}

.hero-copy,
.plain-list,
.status-message,
.selection-note,
.character-count,
.stat-block span,
.search-info,
.placeholder-text {
    color: var(--ink-soft);
}

.hero-copy {
    margin: 1rem 0 0;
    font-size: 1.04rem;
    line-height: 1.7;
}

.hero-actions,
.editor-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

.hero-actions {
    margin-top: 1.5rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: 0.9rem 1.4rem;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
    cursor: pointer;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-1px);
}

.button--primary {
    background: var(--ink);
    color: #ffffff;
}

.button--primary:hover,
.button--primary:focus-visible {
    background: var(--accent-strong);
}

.button--ghost {
    background: var(--surface-strong);
    border-color: var(--line);
    color: var(--ink);
}

.button--wide {
    width: 100%;
}

.button[disabled] {
    cursor: progress;
    opacity: 0.7;
    transform: none;
}

.stat-block {
    display: grid;
    gap: 0.35rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--line);
}

.stat-block:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.stat-block strong {
    font-size: 2.5rem;
    line-height: 1;
}

.section-heading {
    margin-bottom: 1.2rem;
}

.section-heading h2 {
    margin: 0;
    font-size: 1.75rem;
}

.field,
.tts-form,
.search-group {
    display: grid;
    gap: 0.75rem;
}

.field > span {
    font-weight: 700;
}

textarea,
select,
.search-input,
.density-input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.8);
    color: var(--ink);
    padding: 0.95rem 1rem;
}

textarea:focus,
select:focus,
.search-input:focus,
.density-input:focus {
    border-color: rgba(13, 107, 82, 0.5);
    outline: 3px solid rgba(13, 107, 82, 0.12);
}

textarea {
    min-height: 260px;
    resize: vertical;
    line-height: 1.6;
}

.tempo-toggle {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tempo-option {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: #faf9f6;
    cursor: pointer;
}

.tempo-option input {
    accent-color: var(--accent-strong);
}

.form-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.selection-note,
.character-count,
.status-message {
    margin: 0;
    line-height: 1.6;
}

.selection-note {
    max-width: 52ch;
}

.character-count {
    white-space: nowrap;
    font-weight: 700;
}

.audio-player {
    width: 100%;
    margin-top: 1rem;
}

.status-message[data-state="success"] {
    color: var(--accent-strong);
}

.status-message[data-state="error"] {
    color: #9c2f12;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.mini-stat {
    display: grid;
    gap: 0.35rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--line);
}

.mini-stat span {
    color: var(--ink-soft);
    font-size: 0.9rem;
}

.mini-stat strong {
    font-size: 1.9rem;
}

.search-info {
    min-height: 1.5rem;
    padding: 0.8rem 1rem;
    border-left: 4px solid var(--accent-strong);
    background: rgba(255, 255, 255, 0.6);
    border-radius: 8px;
}

.highlighted-text-container,
.density-results {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 1.25rem;
}

.highlighted-text-container {
    max-height: 400px;
    overflow-y: auto;
}

.highlighted-text {
    word-wrap: break-word;
    white-space: pre-wrap;
    line-height: 1.8;
}

.highlight-1,
.highlight-2,
.highlight-3,
.highlight-4,
.highlight-5 {
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 600;
}

.highlight-1 {
    background: #ffd700;
    color: #333333;
}

.highlight-2 {
    background: #ff6b6b;
    color: #ffffff;
}

.highlight-3 {
    background: #4ecdc4;
    color: #ffffff;
}

.highlight-4 {
    background: #95e1d3;
    color: #333333;
}

.highlight-5 {
    background: #a8e6cf;
    color: #333333;
}

.density-controls {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.density-input {
    max-width: 220px;
}

.density-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--line);
}

.density-item:last-child {
    border-bottom: 0;
}

.density-word {
    font-weight: 700;
    flex: 1;
}

.density-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.density-count {
    min-width: 48px;
    text-align: center;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    background: rgba(19, 38, 29, 0.07);
    font-weight: 700;
}

.density-percent {
    min-width: 64px;
    text-align: right;
    color: var(--ink-soft);
}

.density-bar {
    width: 140px;
    height: 8px;
    border-radius: 999px;
    background: rgba(19, 38, 29, 0.12);
    overflow: hidden;
}

.density-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--warm));
}

.plain-list {
    margin: 0;
    padding-left: 1.15rem;
    display: grid;
    gap: 0.75rem;
    line-height: 1.6;
}

.plain-list--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem 1.2rem;
}

.chip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    min-height: 2.4rem;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-weight: 700;
}

.reveal {
    animation: rise-in 680ms ease both;
}

.reveal--delay {
    animation-delay: 120ms;
}

.reveal--delay-2 {
    animation-delay: 220ms;
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 960px) {
    .hero-grid,
    .workspace-grid,
    .feature-grid,
    .coverage-grid {
        grid-template-columns: 1fr;
    }

    .hero-card h1 {
        max-width: 14ch;
    }
}

@media (max-width: 700px) {
    .top-bar__inner,
    .site-header__inner,
    .form-meta,
    .density-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats-grid,
    .plain-list--compact {
        grid-template-columns: 1fr;
    }

    .panel {
        padding: 1.3rem;
    }

    .density-input {
        max-width: none;
    }

    .density-item,
    .density-stats {
        flex-direction: column;
        align-items: flex-start;
    }
}