/* ========== World Clock Specific Styles ========== */

/* ===== App Layout ===== */
.app-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px 40px;
}

/* ===== Header ===== */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 12px 24px;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.logo span {
    opacity: 0.6;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fg2);
}

.seal-container {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    cursor: pointer;
    border-radius: 4px;
    overflow: visible;
}

.seal-container canvas {
    display: block;
}

.controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.controls select {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    border-radius: var(--radius);
    padding: 4px 8px;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
}

.controls button {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 5px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition);
    white-space: nowrap;
}

.controls button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== Section Titles ===== */
.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--fg2);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===== Clock Panel ===== */
.clock-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0 16px;
    flex-wrap: wrap;
}

.search-tz {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
    padding: 8px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    font-size: 0.9rem;
    outline: none;
    transition: border var(--transition);
}

.search-tz:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-tz::placeholder {
    color: var(--fg3);
}

/* Timezone dropdown */
.tz-dropdown-wrap {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.tz-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    max-height: 260px;
    overflow-y: auto;
    z-index: 50;
    display: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.tz-dropdown.visible {
    display: block;
}

.tz-dropdown .tz-group-label {
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--fg3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg3);
    position: sticky;
    top: 0;
}

.tz-dropdown .tz-item {
    padding: 8px 14px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition);
}

.tz-dropdown .tz-item:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

.tz-dropdown .tz-item .tz-offset {
    font-size: 0.78rem;
    color: var(--fg3);
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.tz-dropdown .tz-item.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.tz-no-result {
    padding: 12px 14px;
    font-size: 0.85rem;
    color: var(--fg3);
    text-align: center;
}

/* ===== Clock Grid ===== */
.clock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

/* ===== Clock Card ===== */
.clock-card {
    position: relative;
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
    transition: all 0.35s ease;
    overflow: hidden;
    animation: cardIn 0.35s ease;
}

.clock-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    opacity: 0.12;
    transition: opacity var(--transition);
    z-index: 0;
    pointer-events: none;
}

/* Day gradient */
.clock-card[data-period="day"]::before {
    background: linear-gradient(135deg, #fbbf24 0%, #38bdf8 100%);
}

/* Night gradient */
.clock-card[data-period="night"]::before {
    background: linear-gradient(135deg, #1e3a5f 0%, #4c1d95 100%);
    opacity: 0.18;
}

/* Dawn/Dusk gradient */
.clock-card[data-period="dawn"]::before {
    background: linear-gradient(135deg, #f97316 0%, #fbbf24 100%);
    opacity: 0.15;
}

.clock-card[data-period="dusk"]::before {
    background: linear-gradient(135deg, #f97316 0%, #7c3aed 100%);
    opacity: 0.15;
}

/* Glass effect */
.clock-card {
    background: var(--bg2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.clock-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.clock-card .card-content {
    position: relative;
    z-index: 1;
}

.clock-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.clock-card .city-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--fg);
}

.clock-card .tz-label {
    font-size: 0.75rem;
    color: var(--fg2);
    margin-top: 2px;
}

.clock-card .offset-badge {
    font-size: 0.72rem;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 2px 8px;
    border-radius: 20px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-weight: 600;
}

.clock-card .btn-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--fg3);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 2px 6px;
    border-radius: 4px;
    opacity: 0;
    transition: all var(--transition);
    z-index: 2;
}

.clock-card:hover .btn-remove {
    opacity: 1;
}

.clock-card .btn-remove:hover {
    color: var(--err);
    background: rgba(248, 81, 73, 0.1);
}

.clock-card .period-icon {
    font-size: 1.1rem;
    margin-bottom: 8px;
    display: block;
}

.clock-card .time-display {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.5px;
    color: var(--fg);
    margin-bottom: 4px;
    line-height: 1.2;
}

.clock-card .date-display {
    font-size: 0.8rem;
    color: var(--fg2);
}

/* Empty state hint */
.clock-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--fg3);
    border: 2px dashed var(--border);
    border-radius: 12px;
}

.clock-empty .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(8px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes cardOut {
    from {
        opacity: 1;
        transform: scale(1);
    }

    to {
        opacity: 0;
        transform: scale(0.88);
    }
}

/* ===== Converter Section ===== */
.converter-section {
    margin-top: 8px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg2);
    overflow: hidden;
}

.converter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    cursor: pointer;
    transition: background var(--transition);
    user-select: none;
}

.converter-header:hover {
    background: var(--bg3);
}

.converter-header .section-title {
    margin: 0;
}

.converter-toggle {
    background: none;
    border: none;
    color: var(--fg2);
    font-size: 1rem;
    cursor: pointer;
    padding: 2px 6px;
    transition: transform 0.3s ease;
}

.converter-toggle.collapsed {
    transform: rotate(180deg);
}

.converter-body {
    padding: 0 20px 20px;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
    overflow: hidden;
}

.converter-body.collapsed {
    max-height: 0;
    opacity: 0;
    padding: 0 20px;
}

.converter-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.converter-row label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--fg2);
    min-width: 60px;
}

.converter-row select,
.converter-row input[type="date"],
.converter-row input[type="time"] {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--fg);
    padding: 6px 10px;
    font-size: 0.85rem;
    outline: none;
    transition: border var(--transition);
}

.converter-row select:focus,
.converter-row input:focus {
    border-color: var(--accent);
}

.converter-row select {
    min-width: 180px;
    max-width: 280px;
}

.btn-now {
    background: var(--accent-glow);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 5px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-now:hover {
    background: var(--accent);
    color: #fff;
}

/* Converter results */
.converter-results {
    margin-top: 8px;
}

.converter-results .result-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--fg2);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.result-list {
    list-style: none;
}

.result-item {
    display: grid;
    grid-template-columns: 140px 110px 1fr 80px;
    align-items: center;
    padding: 10px 14px;
    border-radius: var(--radius);
    transition: background var(--transition);
    gap: 8px;
}

.result-item:nth-child(odd) {
    background: var(--bg);
}

.result-item:hover {
    background: var(--accent-glow);
}

.result-item .result-city {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--fg);
}

.result-item .result-time {
    font-size: 0.92rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
}

.result-item .result-date {
    font-size: 0.78rem;
    color: var(--fg2);
}

.result-item .result-diff {
    font-size: 0.75rem;
    text-align: right;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
    white-space: nowrap;
}

.result-item .result-diff.prev-day {
    background: rgba(248, 81, 73, 0.12);
    color: var(--err);
}

.result-item .result-diff.next-day {
    background: rgba(63, 185, 80, 0.12);
    color: var(--success);
}

.result-item .result-diff.same-day {
    color: var(--fg3);
}

.result-empty {
    text-align: center;
    padding: 20px;
    color: var(--fg3);
    font-size: 0.85rem;
}

.btn-copy-results {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 6px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.82rem;
    margin-top: 12px;
    transition: all var(--transition);
}

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

.btn-copy-results.copied {
    border-color: var(--success);
    color: var(--success);
}

/* Target timezone chips in converter */
.target-zones {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.target-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 3px 10px;
    font-size: 0.78rem;
    color: var(--fg);
    cursor: default;
    transition: all var(--transition);
}

.target-chip .chip-remove {
    cursor: pointer;
    color: var(--fg3);
    font-size: 0.7rem;
    margin-left: 2px;
    transition: color var(--transition);
}

.target-chip .chip-remove:hover {
    color: var(--err);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    header {
        padding: 10px 16px;
    }

    .header-top {
        flex-wrap: wrap;
    }

    .app-container {
        padding: 0 12px 32px;
    }

    .clock-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 10px;
    }

    .clock-card {
        padding: 14px;
    }

    .clock-card .time-display {
        font-size: 1.5rem;
    }

    .clock-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .tz-dropdown-wrap {
        max-width: 100%;
    }

    .converter-row {
        flex-direction: column;
        align-items: stretch;
    }

    .converter-row label {
        min-width: auto;
    }

    .converter-row select {
        max-width: 100%;
        min-width: auto;
    }

    .result-item {
        grid-template-columns: 1fr 1fr;
        gap: 4px 8px;
    }

    .result-item .result-diff {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .clock-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .clock-card .time-display {
        font-size: 1.3rem;
    }

    .clock-card .city-name {
        font-size: 0.88rem;
    }
}