:root {
    --bg: #121214;
    --surface: #1b1b1f;
    --surface-raised: #212126;
    --border: #2c2c33;
    --text: #ececee;
    --text-muted: #8c8c94;
    --accent: #7c8cff;
    --accent-soft: rgba(124, 140, 255, 0.14);
    --good: #6fe3a1;
    --good-soft: rgba(111, 227, 161, 0.14);
    --radius: 14px;
    --ui-font: sans-serif;
    --mono-font: monospace;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--ui-font);
}

body {
    min-height: 100vh;
    position: relative;
}

.noise {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.035;
    background-image: radial-gradient(circle at 1px 1px, #fff 1px, transparent 0);
    background-size: 22px 22px;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 6px;
}

/* ---------- header ---------- */

.site-header {
    position: relative;
    z-index: 1;
    padding: 40px 24px 28px;
    max-width: 1080px;
    margin: 0 auto;
}

.header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.brand-mark {
    font-size: 34px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    font-family: "Sora UI", sans-serif;
}

.brand-text h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.brand-text p {
    margin: 2px 0 0;
    font-size: 13.5px;
    color: var(--text-muted);
}

.repo-link {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 8px 14px;
    border-radius: 999px;
    white-space: nowrap;
}

.repo-link:hover {
    color: var(--text);
    border-color: var(--accent);
    text-decoration: none;
}

.specimen-control {
    display: block;
    margin-top: 32px;
}

.specimen-label {
    display: block;
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

#preview-text {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1.5px solid var(--border);
    color: var(--text);
    font-family: var(--ui-font);
    font-size: clamp(22px, 4vw, 34px);
    font-weight: 600;
    padding: 4px 2px 14px;
    transition: border-color 0.2s ease;
}

#preview-text:focus {
    border-bottom-color: var(--accent);
}

#preview-text::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

/* ---------- main / toolbar ---------- */

main {
    position: relative;
    z-index: 1;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}

.search-control {
    position: relative;
    flex: 1 1 280px;
    max-width: 360px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

#font-search {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-family: var(--ui-font);
    font-size: 14px;
    padding: 11px 14px 11px 38px;
    transition: border-color 0.15s ease;
}

#font-search:focus {
    border-color: var(--accent);
}

#font-search::placeholder {
    color: var(--text-muted);
}

.font-count {
    font-size: 13px;
    color: var(--text-muted);
    font-family: var(--mono-font);
    white-space: nowrap;
}

.view.is-hidden {
    display: none;
}

.cta-btn {
    background: var(--accent);
    border: none;
    color: #0c0c10;
    font-family: var(--ui-font);
    font-size: 13.5px;
    font-weight: 600;
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    white-space: nowrap;
    transition: filter 0.15s ease;
}

.cta-btn:hover {
    filter: brightness(1.08);
}

.status-region {
    font-size: 14px;
    color: var(--text-muted);
}

.status-region:empty {
    display: none;
}

.status-message {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 0;
}

.status-message.is-error {
    color: #f29b9b;
}

.retry-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--ui-font);
    font-size: 13px;
    font-weight: 500;
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
}

.retry-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.spinner {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ---------- font grid / cards ---------- */

.font-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.font-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 26px 20px;
    opacity: 0;
    transform: translateY(8px);
    animation: rise 0.45s ease forwards;
}

@keyframes rise {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.font-card.is-hidden {
    display: none;
}

.card-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.card-name {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.card-meta {
    font-size: 12px;
    font-family: var(--mono-font);
    color: var(--text-muted);
}

.specimen {
    font-size: clamp(28px, 5vw, 44px);
    line-height: 1.15;
    word-wrap: break-word;
    min-height: 1.3em;
    color: var(--text);
    margin-bottom: 18px;
}

.specimen.is-loading {
    color: var(--text-muted);
    font-style: italic;
    font-size: 16px;
}

.card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.weight-select {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--mono-font);
    font-size: 12.5px;
    padding: 6px 10px;
    border-radius: 8px;
    cursor: pointer;
}

.weight-select:hover {
    border-color: var(--accent);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--accent-soft);
    border: 1px solid transparent;
    color: var(--accent);
    font-family: var(--ui-font);
    font-size: 13px;
    font-weight: 600;
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.copy-btn:hover {
    background: rgba(124, 140, 255, 0.22);
}

.copy-btn.is-copied {
    background: var(--good-soft);
    color: var(--good);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 14.5px;
}

/* ---------- footer ---------- */

.site-footer {
    position: relative;
    z-index: 1;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px 48px;
    color: var(--text-muted);
    font-size: 13px;
}

.site-footer code {
    font-family: var(--mono-font);
    background: var(--surface);
    padding: 2px 6px;
    border-radius: 5px;
    font-size: 12px;
}

/* ---------- toast ---------- */

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translate(-50%, 12px);
    background: var(--surface-raised);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 13.5px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: 10px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 10;
}

.toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* ---------- builder view ---------- */

.builder-toolbar {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.back-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-family: var(--ui-font);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
}

.back-btn:hover {
    color: var(--text);
    border-color: var(--accent);
}

.builder-title h2 {
    margin: 0 0 4px;
    font-size: 19px;
}

.builder-title p {
    margin: 0;
    font-size: 13.5px;
    color: var(--text-muted);
}

.builder-layout {
    display: grid;
    gap: 20px;
}

.builder-config {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}

.config-name-field,
.fill-all-field {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
}

.config-name-field span,
.fill-all-field span {
    white-space: nowrap;
}

#config-name {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--ui-font);
    font-size: 13.5px;
    font-weight: 500;
    padding: 7px 10px;
    border-radius: 8px;
    min-width: 160px;
}

#config-name:focus {
    border-color: var(--accent);
}

#fill-all-select {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--mono-font);
    font-size: 12.5px;
    padding: 7px 10px;
    border-radius: 8px;
}

.builder-rows {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.row-group-heading {
    margin: 18px 0 2px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.row-group-heading:first-child {
    margin-top: 0;
}

.key-row {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 18px;
}

.key-row-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.key-name {
    font-family: var(--mono-font);
    font-size: 12.5px;
    color: var(--text);
    background: var(--surface-raised);
    padding: 3px 8px;
    border-radius: 6px;
}

.key-note {
    font-size: 12px;
    color: #d8b56b;
}

.key-row-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.key-specimen {
    margin: 12px 0 0;
    font-size: clamp(18px, 3vw, 24px);
    line-height: 1.3;
    word-wrap: break-word;
}

/* custom font combobox */

.font-combobox {
    position: relative;
    flex: 1 1 200px;
    min-width: 160px;
}

.combobox-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--ui-font);
    font-size: 13.5px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
}

.combobox-trigger:hover {
    border-color: var(--accent);
}

.combobox-trigger .trigger-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.combobox-trigger .trigger-chevron {
    color: var(--text-muted);
    flex-shrink: 0;
}

.combobox-panel {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    width: min(280px, 80vw);
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
    z-index: 5;
    padding: 8px;
}

.combobox-panel.is-hidden {
    display: none;
}

.combobox-filter {
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--ui-font);
    font-size: 13px;
    padding: 7px 10px;
    border-radius: 7px;
    margin-bottom: 6px;
}

.combobox-filter:focus {
    border-color: var(--accent);
}

.combobox-options {
    max-height: 240px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.combobox-option {
    background: none;
    border: none;
    color: var(--text);
    text-align: left;
    font-size: 15px;
    padding: 8px 10px;
    border-radius: 7px;
    cursor: pointer;
}

.combobox-option:hover,
.combobox-option:focus-visible {
    background: var(--accent-soft);
}

.combobox-option[aria-selected="true"] {
    color: var(--accent);
}

.combobox-option.is-hidden {
    display: none;
}

/* output panel */

.builder-output {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.builder-output h3 {
    margin: 0 0 14px;
    font-size: 15px;
}

.output-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.copy-btn--ghost {
    background: var(--surface-raised);
    color: var(--text-muted);
}

.copy-btn--ghost:hover {
    color: var(--text);
    background: var(--surface-raised);
}

.output-note {
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0 0 14px;
}

.output-note code {
    font-family: var(--mono-font);
    font-size: 11.5px;
    background: var(--surface-raised);
    padding: 1px 5px;
    border-radius: 5px;
}

.json-preview {
    margin: 0;
    max-height: 320px;
    overflow: auto;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    font-family: var(--mono-font);
    font-size: 11.5px;
    line-height: 1.5;
    color: var(--text-muted);
    white-space: pre-wrap;
    word-break: break-all;
}

/* ---------- responsive ---------- */

@media (min-width: 720px) {
    .font-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 880px) {
    .builder-layout {
        grid-template-columns: 1fr 340px;
        align-items: start;
    }
    
    .builder-config {
        grid-column: 1 / -1;
    }
    
    .builder-output {
        position: sticky;
        top: 20px;
    }
}

@media (max-width: 480px) {
    .site-header {
        padding: 28px 16px 22px;
    }
    
    main {
        padding: 0 16px 60px;
    }
    
    .font-card {
        padding: 20px 18px 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .font-card {
        animation: none;
        opacity: 1;
        transform: none;
    }
    
    .spinner {
        animation: none;
    }
    
    * {
        transition: none !important;
    }
}