@import url(https://fonts.googleapis.com/css?family=Righteous);

:root {
    color-scheme: dark;
    --surface: rgba(255, 255, 255, 0.03);
    --surface-raised: rgba(255, 255, 255, 0.055);
    --border: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.2);
    --text-primary: hsl(0 0% 95%);
    --text-secondary: hsl(0 0% 75%);
    --text-muted: hsl(0 0% 60%);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background:
        radial-gradient(at 50% 0, transparent, #080808),
        repeating-conic-gradient(hsla(0, 0%, 0%, .235) 0% 25%, transparent 0% 50%) 0 0 / 0.375em 0.375em,
        #3b3b3b;
    min-height: 100vh;
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

body.modal-open { overflow: hidden; }
[hidden] { display: none !important; }
button, input, select { font: inherit; }
button, select { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
#background-wrapper { display: none; }

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

.page-container {
    max-width: 90rem;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
    flex: 1;
    padding: 20px 1rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
    align-self: stretch;
    background-color: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px) saturate(1.2);
    -webkit-backdrop-filter: blur(12px) saturate(1.2);
}

.nav-content {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    object-fit: cover;
}

.logo-text-desktop {
    font-weight: 900;
    color: hsl(0 0% 95%);
    letter-spacing: 0.05em;
    font-size: 1.125rem;
    font-family: 'Righteous', 'Microsoft YaHei', sans-serif;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
    justify-content: flex-end;
}

.nav-btn,
.btn {
    cursor: pointer;
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid transparent;
    position: relative;
    isolation: isolate;
    color: white;
    transition: translate 0.1s ease-out, scale 0.1s ease-out, border-color 0.2s ease, background 0.2s ease;
    font-weight: 500;
}

.nav-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
    text-decoration: none;
}

.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.nav-btn::before,
.nav-btn::after,
.btn::before,
.btn::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    pointer-events: none;
}

.nav-btn::before,
.btn::before {
    z-index: -1;
    background: linear-gradient(hsl(0 0% 100% / 0.18), hsl(0 0% 4% / 0.7));
    backdrop-filter: saturate(2) contrast(1) blur(10px);
}

.nav-btn::after,
.btn::after {
    box-shadow: 0 0 1px 0.8px hsl(0 0% 100% / 0.8) inset;
    mask: linear-gradient(-35deg, #ffffff80, #ffffff30 30% 60%, #fff);
}

.nav-btn:hover:not(:disabled),
.btn:hover:not(:disabled) { scale: 1.02; }

.nav-btn:active:not(:disabled),
.btn:active:not(:disabled) {
    scale: 0.98;
    translate: 0 1px;
}

.nav-btn:focus-visible,
.btn:focus-visible,
.filter-chip:focus-visible,
.card-action:focus-visible,
.page-button:focus-visible,
.modal-close:focus-visible,
.modal-view-tab:focus-visible,
.clear-search:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.82);
    outline-offset: 3px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    display: inline-block;
    color: hsl(0 0% 90%);
    font-family: 'Righteous', 'Microsoft YaHei', serif;
    font-size: 3.5em;
    text-shadow: .03em .03em 0 hsla(230, 40%, 50%, 1);
    position: relative;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.header h1::after {
    content: attr(data-shadow);
    position: absolute;
    top: .06em;
    left: .06em;
    width: 100%;
    height: 100%;
    z-index: -1;
    text-shadow: none;
    background-image: linear-gradient(45deg, transparent 45%, hsla(48, 20%, 90%, 1) 45%, hsla(48, 20%, 90%, 1) 55%, transparent 0);
    background-size: .05em .05em;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    white-space: inherit;
    animation: shad-anim 60s linear infinite;
}

@keyframes shad-anim {
    0% { background-position: 0 0; }
    100% { background-position: 100% -100%; }
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Prompt library */
.container {
    background: var(--surface);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.prompt-library {
    padding: 2rem;
    min-height: 30rem;
}

.filter-panel {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.control-label {
    display: block;
    margin-bottom: 0.625rem;
    color: var(--text-primary);
    font-size: 0.925rem;
    line-height: 1.5;
    font-weight: 600;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    fill: none;
    stroke: var(--text-muted);
    stroke-width: 1.8;
    stroke-linecap: round;
    pointer-events: none;
}

.search-box input {
    width: 100%;
    min-height: 3.25rem;
    padding: 0.75rem 3rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.045);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.search-box input::-webkit-search-cancel-button { display: none; }
.search-box input::placeholder { color: var(--text-muted); }
.search-box input:hover:not(:disabled) { border-color: rgba(255, 255, 255, 0.3); }

.search-box input:focus {
    border-color: rgba(255, 255, 255, 0.42);
    background: rgba(255, 255, 255, 0.07);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.07);
}

.search-box input:disabled {
    opacity: 0.58;
    cursor: wait;
}

.clear-search {
    position: absolute;
    right: 0.75rem;
    width: 2rem;
    height: 2rem;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.35rem;
    line-height: 1;
}

.clear-search:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.14);
}

.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

.filter-chip {
    min-height: 2.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.035);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.18s ease, color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.filter-chip:hover {
    transform: translateY(-1px);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.07);
}

.filter-chip.is-active {
    color: #111;
    border-color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 5px 18px rgba(0, 0, 0, 0.2);
}

.filter-count {
    min-width: 1.4rem;
    padding: 0.1rem 0.35rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.09);
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.35;
    text-align: center;
}

.filter-chip.is-active .filter-count {
    background: rgba(0, 0, 0, 0.1);
    color: #2d3748;
}

.result-toolbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
}

.result-summary {
    min-height: 2.625rem;
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.view-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

.select-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    white-space: nowrap;
}

.select-control select {
    min-height: 2.625rem;
    padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: rgba(28, 28, 28, 0.96);
    color: var(--text-primary);
    cursor: pointer;
}

.select-control select:disabled {
    opacity: 0.58;
    cursor: wait;
}

.prompt-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.prompt-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 20rem;
    padding: 1.25rem;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.035);
    box-shadow: 0 6px 22px rgba(0, 0, 0, 0.16);
    transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.prompt-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
    opacity: 0.55;
}

.prompt-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.055);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.category-badge {
    display: inline-flex;
    align-items: center;
    min-height: 1.75rem;
    padding: 0.25rem 0.65rem;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    color: hsl(0 0% 82%);
    font-size: 0.75rem;
    line-height: 1.25;
    font-weight: 600;
}

.prompt-number {
    color: var(--text-muted);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.75rem;
}

.prompt-card h3 {
    margin-bottom: 0.875rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    line-height: 1.45;
    font-weight: 650;
    overflow-wrap: anywhere;
}

.prompt-excerpt {
    display: -webkit-box;
    flex: 1;
    overflow: hidden;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.75;
    overflow-wrap: anywhere;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 7;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.075);
}

.character-count {
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 0.78rem;
}

.card-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.45rem;
}

.card-action {
    min-height: 2.25rem;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.78rem;
    line-height: 1.2;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.card-action:hover {
    transform: translateY(-1px);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.07);
}

.card-action-primary {
    color: #151515;
    border-color: rgba(255, 255, 255, 0.86);
    background: rgba(255, 255, 255, 0.86);
}

.card-action-primary:hover {
    color: #080808;
    border-color: white;
    background: white;
}

/* Loading, empty and error states */
.state-panel {
    min-height: 20rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
}

.state-panel h3 {
    color: var(--text-primary);
    font-size: 1.15rem;
    line-height: 1.5;
}

.state-panel p {
    max-width: 36rem;
    font-size: 0.925rem;
    line-height: 1.7;
}

.state-icon {
    width: 3.25rem;
    height: 3.25rem;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    background: var(--surface-raised);
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.state-spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid rgba(255, 255, 255, 0.12);
    border-top-color: rgba(255, 255, 255, 0.75);
    border-radius: 50%;
    animation: state-spin 0.9s linear infinite;
}

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

.btn-compact {
    margin-top: 0.5rem;
    padding: 0.65rem 1.25rem;
    font-size: 0.875rem;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-button {
    min-width: 2.5rem;
    min-height: 2.5rem;
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.035);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.page-button:hover:not(:disabled) {
    transform: translateY(-1px);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.07);
}

.page-button.is-current {
    color: #111;
    border-color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.9);
}

.page-button:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.page-nav { min-width: 4.75rem; }
.page-ellipsis { min-width: 1.5rem; color: var(--text-muted); text-align: center; }

/* Prompt detail modal */
.prompt-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
}

.modal-dialog {
    position: relative;
    width: min(58rem, 100%);
    max-height: min(86vh, 52rem);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-lg);
    background: linear-gradient(rgba(38, 38, 38, 0.96), rgba(18, 18, 18, 0.98));
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.58);
    animation: modal-enter 0.2s ease-out;
}

@keyframes modal-enter {
    from { opacity: 0; transform: translateY(10px) scale(0.985); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.25rem 1rem;
    border-bottom: 1px solid var(--border);
}

.modal-heading { min-width: 0; }

.modal-heading h2 {
    margin-top: 0.7rem;
    color: var(--text-primary);
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    line-height: 1.4;
    overflow-wrap: anywhere;
}

.modal-meta {
    display: inline-block;
    margin-top: 0.45rem;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.modal-close {
    width: 2.5rem;
    height: 2.5rem;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.045);
    color: var(--text-secondary);
    font-size: 1.55rem;
    line-height: 1;
    cursor: pointer;
}

.modal-close:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.09);
}

.modal-content {
    min-height: 0;
    flex: 1;
    overflow: auto;
    padding: 1.25rem;
}

.modal-view-tabs {
    display: inline-flex;
    align-self: flex-start;
    flex-shrink: 0;
    gap: 0.25rem;
    margin: 0.75rem 1.25rem 0;
    padding: 0.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
}

.modal-view-tab {
    min-height: 2.25rem;
    padding: 0.45rem 0.85rem;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
}

.modal-view-tab:hover,
.modal-view-tab[aria-selected="true"] {
    background: var(--surface-raised);
    color: var(--text-primary);
}

.prompt-full-text {
    width: 100%;
    min-height: 100%;
    padding: 1.125rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.22);
    color: hsl(0 0% 88%);
    font-family: 'Consolas', 'Monaco', 'Courier New', 'Microsoft YaHei', monospace;
    font-size: 0.9375rem;
    line-height: 1.75;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    user-select: text;
}

.prompt-rendered {
    width: 100%;
    min-height: 100%;
    padding: 1.125rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.22);
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.8;
    overflow-wrap: anywhere;
    user-select: text;
}

.prompt-rendered p,
.prompt-rendered ul,
.prompt-rendered ol,
.prompt-rendered blockquote,
.prompt-rendered pre,
.prompt-rendered .prompt-table-scroll { margin: 0.9rem 0; }
.prompt-rendered h1,
.prompt-rendered h2,
.prompt-rendered h3,
.prompt-rendered h4,
.prompt-rendered h5,
.prompt-rendered h6 { margin: 1.4rem 0 0.65rem; font-size: 1.1rem; line-height: 1.5; }
.prompt-rendered h1 { font-size: 1.4rem; }
.prompt-rendered h2 { font-size: 1.25rem; }
.prompt-rendered > :first-child { margin-top: 0; }
.prompt-rendered > :last-child { margin-bottom: 0; }
.prompt-rendered ul,
.prompt-rendered ol { padding-left: 1.5rem; }
.prompt-rendered li { margin: 0.3rem 0; }
.prompt-rendered blockquote { padding: 0.25rem 1rem; border-left: 3px solid var(--border-strong); color: var(--text-secondary); }
.prompt-rendered a { color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.prompt-rendered code { padding: 0.15rem 0.3rem; border-radius: 4px; background: var(--surface-raised); font-family: 'Consolas', 'Monaco', monospace; font-size: 0.9em; }
.prompt-rendered pre { padding: 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); overflow: auto; }
.prompt-rendered pre code { padding: 0; background: transparent; }
.prompt-rendered hr { margin: 1.25rem 0; border: 0; border-top: 1px solid var(--border); }
.prompt-rendered img { max-width: 100%; height: auto; vertical-align: middle; }
.prompt-rendered [align="center"] { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.prompt-rendered [align="center"] > div { flex: 1 1 15rem; min-width: 0; max-width: 400px; }
.prompt-table-scroll { overflow-x: auto; }
.prompt-rendered table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.prompt-rendered th,
.prompt-rendered td { min-width: 8rem; padding: 0.5rem 0.65rem; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.prompt-rendered th { background: var(--surface-raised); }

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 1rem 1.25rem 1.25rem;
    border-top: 1px solid var(--border);
}

.modal-copy-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
}

.modal-copy-button svg {
    width: 1rem;
    height: 1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
}

.clipboard-fallback {
    position: fixed;
    top: -1000px;
    left: -1000px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

/* Toast */
.toast {
    position: fixed;
    left: 50%;
    bottom: 1.5rem;
    z-index: 150;
    max-width: min(90vw, 30rem);
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    background: rgba(20, 20, 20, 0.94);
    color: var(--text-primary);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.42);
    font-size: 0.875rem;
    line-height: 1.5;
    text-align: center;
    opacity: 0;
    transform: translate(-50%, 8px);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast.is-error { border-color: rgba(255, 145, 145, 0.38); color: #ffd3d3; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.3); }

/* Day mode */
body.day-mode {
    --surface: hsla(0, 0%, 100%, 0.4);
    --surface-raised: rgba(255, 255, 255, 0.7);
    --border: rgba(0, 0, 0, 0.1);
    --border-strong: rgba(0, 0, 0, 0.17);
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --shadow: 5px 3px 30px rgba(0, 0, 0, 0.1);
    color-scheme: light;
    background: #f0f4f8;
    background-image: url(../../../../assets/image/day-background.png);
    background-size: auto;
    background-repeat: repeat;
}

body.day-mode .navbar {
    background-color: rgba(255, 255, 255, 0.7);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

body.day-mode .logo-text-desktop { color: #1a202c; font-weight: bold; text-shadow: none; }

body.day-mode .nav-btn,
body.day-mode .btn {
    background: #ffffff;
    color: #1a202c;
    border: 2px solid #cbd5e0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

body.day-mode .nav-btn::before,
body.day-mode .btn::before { background: none; backdrop-filter: none; }

body.day-mode .nav-btn::after,
body.day-mode .btn::after { display: none; }

body.day-mode .nav-btn:hover:not(:disabled),
body.day-mode .btn:hover:not(:disabled) {
    background: #f7fafc;
    border-color: #a0aec0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body.day-mode .header h1 { color: #2d3748; text-shadow: .03em .03em 0 hsla(200, 60%, 60%, 1); }

body.day-mode .search-box input,
body.day-mode .select-control select { background: rgba(255, 255, 255, 0.78); color: #1a202c; }

body.day-mode .search-box input::placeholder { color: #8491a3; }
body.day-mode .search-icon { stroke: #718096; }

body.day-mode .clear-search,
body.day-mode .filter-chip,
body.day-mode .page-button,
body.day-mode .modal-close { background: rgba(255, 255, 255, 0.58); color: #4a5568; }

body.day-mode .clear-search:hover,
body.day-mode .filter-chip:hover,
body.day-mode .page-button:hover:not(:disabled),
body.day-mode .modal-close:hover {
    color: #1a202c;
    border-color: rgba(0, 0, 0, 0.22);
    background: rgba(255, 255, 255, 0.88);
}

body.day-mode .filter-chip.is-active,
body.day-mode .page-button.is-current { color: white; border-color: #4a5568; background: #4a5568; }

body.day-mode .filter-chip.is-active .filter-count { color: white; background: rgba(255, 255, 255, 0.18); }

body.day-mode .prompt-card {
    background: rgba(255, 255, 255, 0.58);
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.07);
}

body.day-mode .prompt-card:hover {
    border-color: rgba(0, 0, 0, 0.18);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.11);
}

body.day-mode .prompt-card::before { background: linear-gradient(90deg, transparent, white, transparent); }
body.day-mode .category-badge { border-color: rgba(0, 0, 0, 0.11); background: rgba(255, 255, 255, 0.7); color: #4a5568; }
body.day-mode .card-footer { border-top-color: rgba(0, 0, 0, 0.08); }
body.day-mode .card-action { background: rgba(255, 255, 255, 0.62); color: #4a5568; }
body.day-mode .card-action:hover { color: #1a202c; border-color: rgba(0, 0, 0, 0.2); background: white; }
body.day-mode .card-action-primary { color: white; border-color: #4a5568; background: #4a5568; }
body.day-mode .card-action-primary:hover { color: white; border-color: #2d3748; background: #2d3748; }
body.day-mode .modal-backdrop { background: rgba(45, 55, 72, 0.48); }

body.day-mode .modal-dialog {
    border-color: rgba(0, 0, 0, 0.12);
    background: linear-gradient(rgba(255, 255, 255, 0.98), rgba(240, 244, 248, 0.99));
    box-shadow: 0 24px 70px rgba(15, 23, 42, 0.28);
}

body.day-mode .prompt-full-text,
body.day-mode .prompt-rendered { border-color: rgba(0, 0, 0, 0.1); background: rgba(241, 245, 249, 0.86); color: #1a202c; }
body.day-mode .toast { border-color: rgba(0, 0, 0, 0.16); background: rgba(255, 255, 255, 0.96); color: #1a202c; box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18); }
body.day-mode .toast.is-error { border-color: rgba(185, 28, 28, 0.28); color: #991b1b; }
body.day-mode ::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.05); }
body.day-mode ::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.2); }

body.day-mode .nav-btn:focus-visible,
body.day-mode .btn:focus-visible,
body.day-mode .filter-chip:focus-visible,
body.day-mode .card-action:focus-visible,
body.day-mode .page-button:focus-visible,
body.day-mode .modal-close:focus-visible,
body.day-mode .modal-view-tab:focus-visible,
body.day-mode .clear-search:focus-visible,
body.day-mode input:focus-visible,
body.day-mode select:focus-visible { outline-color: rgba(0, 0, 0, 0.58); }

/* Theme toggle */
.theme-toggle {
    --theme-toggle-scale: 0.52;
    position: fixed;
    top: clamp(12px, 2vw, 20px);
    right: clamp(12px, 2vw, 20px);
    z-index: 1000;
    user-select: none;
    transform: scale(var(--theme-toggle-scale));
    transform-origin: top right;
}

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

.theme-toggle__btn {
    display: block;
    position: relative;
    width: 125px;
    height: 70px;
    border-radius: 70px;
    border: 5px solid #1c1c1c;
    background-color: #3c4145;
    cursor: pointer;
    transition: all 350ms ease-in;
}

.theme-toggle__checkbox:focus-visible + .theme-toggle__btn { outline: 3px solid rgba(255, 255, 255, 0.8); outline-offset: 4px; }
body.day-mode .theme-toggle__checkbox:focus-visible + .theme-toggle__btn { outline-color: rgba(0, 0, 0, 0.55); }

.theme-toggle__btn::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background-color: #fff;
    border: 5px solid #e3e3c7;
    transition: all 250ms ease-in;
}

.theme-toggle__btn::after {
    content: '';
    position: absolute;
    top: 62%;
    left: 39px;
    z-index: 10;
    width: 9.2px;
    height: 9.2px;
    opacity: 0;
    background-color: #fff;
    border-radius: 50%;
    box-shadow:
        #fff 0 0, #fff 2.5px 0, #fff 5px 0, #fff 7.5px 0, #fff 9px 0,
        #fff 11.5px 0, #fff 13px 0, #fff 17px -1px 0 1px, #fff 13px -6px 0 -2px,
        #fff 6px -6px 0 1px, #d3d3d3 0 0 0 3.5px, #d3d3d3 5px 0 0 3.5px,
        #d3d3d3 9px 0 0 3.5px, #d3d3d3 13px 0 0 3.5px,
        #d3d3d3 17px -1px 0 4.5px, #d3d3d3 13px -6px 0 1px, #d3d3d3 6px -6px 0 4.5px;
    transition: opacity 100ms ease-in;
}

.theme-toggle__feature {
    display: block;
    position: absolute;
    top: 9px;
    left: 52.5%;
    z-index: 20;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: #fff;
    box-shadow:
        rgba(255, 255, 255, 0.1) 30px -3px 0 0,
        rgba(255, 255, 255, 0.1) 12px 10px 0 -1px,
        #fff 38px 18px 0 1px,
        rgba(255, 255, 255, 0.1) 32px 34px 0 0,
        #fff 20px 24px 0 -1.5px,
        rgba(255, 255, 255, 0.1) 5px 38px 0 1px;
    animation: starry_star 5s ease-in-out infinite;
}

.theme-toggle__feature::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -25px;
    width: 15px;
    height: 15px;
    background-color: #fff;
    border-radius: 50%;
    border: 4px solid #e3e3c7;
    box-shadow: #e3e3c7 -28px 0 0 -3px, #e3e3c7 -8px 24px 0 -2px;
    transform-origin: -6px 130%;
    transition: all 250ms ease-in;
}

@keyframes starry_star {
    50% {
        background-color: rgba(255, 255, 255, 0.1);
        box-shadow:
            #fff 30px -3px 0 0, #fff 12px 10px 0 -1px,
            rgba(255, 255, 255, 0.1) 38px 18px 0 1px,
            #fff 32px 34px 0 0,
            rgba(255, 255, 255, 0.1) 20px 24px 0 -1.5px,
            #fff 5px 38px 0 1px;
    }
}

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(.3); }
    50% { opacity: 1; transform: scale(1.1); }
    55% { transform: scale(1.1); }
    75% { transform: scale(.9); }
    100% { opacity: 1; transform: scale(1); }
}

.theme-toggle__checkbox:checked + .theme-toggle__btn { background-color: #9ee3fb; border: 5px solid #86c3d7; }
.theme-toggle__checkbox:checked + .theme-toggle__btn::before { left: 57px; background-color: #ffdf6d; border: 5px solid #e1c348; }

.theme-toggle__checkbox:checked + .theme-toggle__btn::after {
    opacity: 1;
    animation: bounceIn 0.60s 0.10s ease-in-out backwards;
}

.theme-toggle__checkbox:checked + .theme-toggle__btn .theme-toggle__feature {
    opacity: 0;
    box-shadow:
        rgba(255, 255, 255, 0.1) 30px -3px 0 -4px,
        rgba(255, 255, 255, 0.1) 12px 10px 0 -5px,
        #fff 38px 18px 0 -3px,
        rgba(255, 255, 255, 0.1) 32px 34px 0 -4px,
        #fff 20px 24px 0 -5.5px,
        rgba(255, 255, 255, 0.1) 5px 38px 0 -3px;
    animation: none;
}

.theme-toggle__checkbox:checked + .theme-toggle__btn .theme-toggle__feature::before { left: 25px; transform: rotate(70deg); }

.navbar .theme-toggle-container {
    width: 60px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.navbar .theme-toggle {
    position: relative;
    inset: auto;
    z-index: 1000;
    user-select: none;
    transform: scale(0.45);
    transform-origin: center;
}

/* Footer */
.footer {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 2rem 1rem;
    text-align: center;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer p {
    margin: 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    transition: color 300ms ease-out;
    line-height: 1.8;
}

body.day-mode .footer { border-top-color: rgba(0, 0, 0, 0.1); }
body.day-mode .footer p { color: rgba(0, 0, 0, 0.5); }

/* Responsive layout */
@media (max-width: 1024px) {
    .prompt-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .theme-toggle { --theme-toggle-scale: 0.47; }
}

@media (max-width: 768px) {
    .page-container { padding: 10px 1rem; }
    .header h1 { font-size: 2.5em; }
    .prompt-library { padding: 1.5rem; }
    .result-toolbar { align-items: stretch; flex-direction: column; }
    .view-controls { justify-content: flex-start; }
    .result-summary { min-height: auto; }
    .modal-dialog { max-height: 90vh; }
    .footer { padding: 1.5rem 1rem; }
    .footer p { font-size: 0.75rem; }
}

@media (max-width: 639px) {
    .nav-content { flex-direction: column; gap: 0.75rem; align-items: center; padding: 0.75rem 1rem; }
    .logo-wrapper { justify-content: center; width: 100%; }
    .nav-actions { justify-content: center; width: 100%; gap: 0.75rem; flex-wrap: wrap; }
    .prompt-grid { grid-template-columns: minmax(0, 1fr); }
    .prompt-card { min-height: 18rem; }
    .filter-panel { gap: 1.25rem; }
    .view-controls { align-items: stretch; flex-direction: column; }
    .select-control { justify-content: space-between; }
    .select-control select { width: min(14rem, 70%); }
    .prompt-modal { padding: 0.5rem; }
    .modal-header, .modal-content { padding: 1rem; }
    .modal-view-tabs { margin: 0.75rem 1rem 0; }
    .modal-footer { padding: 0.875rem 1rem 1rem; }
    .modal-copy-button { width: 100%; }
}

@media (max-width: 420px) {
    .header h1 { font-size: 2em; }
    .prompt-library { padding: 1rem; }
    .category-filters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .filter-chip:first-child { grid-column: 1 / -1; }
    .card-footer { align-items: flex-start; flex-direction: column; }
    .card-actions { width: 100%; }
    .card-action { flex: 1; }
    .page-nav { min-width: 4.25rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}