/* ——— Time Zone Converter Unified Premium Layout ——— */
.tz-converter-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--cdt-glass-border);
    border-radius: 24px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--cdt-shadow-xl);
    transition: var(--cdt-transition);
}
@media (min-width: 768px) {
    .tz-converter-card { padding: 2rem; }
}

.tz-card-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cdt-blue);
    margin-bottom: 0.5rem;
}

/* Date & Time Panel */
.tz-datetime-panel {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid var(--cdt-border);
    border-radius: 16px;
    padding: 1rem;
    transition: var(--cdt-transition);
}
@media (min-width: 768px) {
    .tz-datetime-panel { padding: 1.25rem 1.5rem; }
}

.tz-time-row {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.tz-time-row .form-control {
    width: 3.5rem;
    text-align: center;
    min-height: 2.75rem;
    padding: 0.35rem;
}
.tz-time-row .form-select {
    width: 4.5rem;
    min-height: 2.75rem;
}
.tz-time-sep {
    font-weight: 700;
    color: #adb5bd;
    font-size: 1.1rem;
    padding: 0 0.1rem;
}

.tz-format-toggle {
    background: rgba(0,0,0,0.06);
    padding: 4px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
}
.tz-format-toggle button {
    border: none;
    background: transparent;
    padding: 0.35rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}
.tz-format-toggle button.active {
    background: var(--cdt-white);
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    color: var(--cdt-blue);
}

/* Unified Rows */
.tz-list-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tz-row-item:hover {
    border-color: var(--cdt-blue);
    box-shadow: var(--cdt-shadow-md);
}

.base-tz-row {
    background: rgba(29, 112, 184, 0.04);
    border: 1.5px solid rgba(29, 112, 184, 0.2) !important;
}

.tz-autocomplete-wrap {
    position: relative;
}
.tz-autocomplete-dropdown {
    position: absolute; left: 0; right: 0; top: 100%;
    margin-top: 4px;
    background: #fff; border: 1px solid var(--cdt-border);
    border-radius: 12px; max-height: 250px; overflow-y: auto;
    z-index: 1000; box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}
.tz-autocomplete-region-header {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--cdt-blue);
    background: rgba(0, 0, 0, 0.03);
    padding: 0.4rem 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    pointer-events: none;
}
.tz-autocomplete-item {
    padding: 0.6rem 0.75rem; cursor: pointer;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.85rem;
}
.tz-autocomplete-item.active,
.tz-autocomplete-item:hover {
    background: rgba(29, 112, 184, 0.08);
}
.tz-autocomplete-item .city { font-weight: 600; color: var(--cdt-black); }
.tz-autocomplete-item .country { font-size: 0.8rem; color: #6c757d; }

/* Time display */
.tz-display-time {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.tz-display-abbrev {
    font-size: 0.8rem;
    font-weight: 600;
    color: #6c757d;
}
.tz-display-date {
    font-size: 0.85rem;
    color: #6c757d;
}
.tz-display-comparison {
    font-size: 0.8rem;
    color: #74808c;
}

/* Timelines without scrollbars */
.tz-timeline-container {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    background: rgba(0,0,0,0.01);
    border-radius: 8px;
    padding: 4px;
    overflow: hidden;
}
/* Elegant side fades to show scrollability without ugly scrollbars */
.tz-timeline-container::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 16px;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.9));
    pointer-events: none;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    z-index: 3;
}
.dark-theme .tz-timeline-container::after {
    background: linear-gradient(to right, transparent, rgba(34, 34, 34, 0.9));
}

.tz-timeline-scroll {
    display: flex;
    gap: 2px;
    overflow-x: auto;
    overflow-y: hidden !important;
    width: 100%;
    scrollbar-width: none; /* Hide scrollbar Firefox */
    -ms-overflow-style: none; /* Hide scrollbar IE/Edge */
    -webkit-overflow-scrolling: touch;
}
.tz-timeline-scroll::-webkit-scrollbar {
    display: none; /* Hide scrollbar Chrome/Safari */
}

.tz-timeline-box {
    flex: 0 0 28px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
    border: 1px solid rgba(0, 0, 0, 0.03);
}
.tz-timeline-box:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

/* Hourly states */
.tz-state-sleep {
    background: #f1f5f9;
    color: #94a3b8;
}
.tz-state-personal {
    background: #fef08a;
    color: #a16207;
}
.tz-state-work {
    background: #dbeafe;
    color: #1d4ed8;
}
.tz-state-selected {
    background: var(--cdt-blue) !important;
    color: #ffffff !important;
    border-color: var(--cdt-blue) !important;
    transform: scale(1.06);
    box-shadow: 0 3px 8px rgba(29, 112, 184, 0.3);
    z-index: 2;
}

/* Dark theme tokens */
.tz-converter-card.dark-theme {
    background-color: #1a1a1a !important;
    color: #f8fafc !important;
    border-color: #2e2e2e !important;
}
.tz-converter-card.dark-theme .border-bottom,
.tz-converter-card.dark-theme .border-top {
    border-color: #2e2e2e !important;
}
.tz-converter-card.dark-theme .tz-datetime-panel {
    background: rgba(255, 255, 255, 0.02);
    border-color: #2e2e2e;
}
.tz-converter-card.dark-theme .form-control,
.tz-converter-card.dark-theme .form-select {
    background-color: #242424 !important;
    border-color: #333 !important;
    color: #f8fafc !important;
}
.tz-converter-card.dark-theme .tz-row-item {
    background-color: #222222 !important;
    border-color: #2e2e2e !important;
    color: #f8fafc !important;
}
.tz-converter-card.dark-theme .base-tz-row {
    background-color: rgba(99, 102, 241, 0.06) !important;
    border-color: rgba(99, 102, 241, 0.25) !important;
}
.tz-converter-card.dark-theme .tz-autocomplete-dropdown {
    background-color: #242424 !important;
    border-color: #333 !important;
    box-shadow: 0 12px 32px rgba(0,0,0,0.5) !important;
}
.tz-converter-card.dark-theme .tz-autocomplete-region-header {
    background-color: rgba(255, 255, 255, 0.04);
    color: #818cf8;
    border-bottom-color: #333;
}
.tz-converter-card.dark-theme .tz-autocomplete-item {
    border-bottom-color: #2d2d2d;
    color: #e2e8f0;
}
.tz-converter-card.dark-theme .tz-autocomplete-item .city {
    color: #ffffff;
}
.tz-converter-card.dark-theme .tz-autocomplete-item .country {
    color: #94a3b8;
}
.tz-converter-card.dark-theme .tz-autocomplete-item.active,
.tz-converter-card.dark-theme .tz-autocomplete-item:hover {
    background-color: rgba(255, 255, 255, 0.06);
}
.tz-converter-card.dark-theme .tz-state-sleep {
    background: #1e293b;
    color: #64748b;
    border-color: #334155;
}
.tz-converter-card.dark-theme .tz-state-personal {
    background: #854d0e;
    color: #fef08a;
    border-color: #a16207;
}
.tz-converter-card.dark-theme .tz-state-work {
    background: #1e3a8a;
    color: #dbeafe;
    border-color: #1e40af;
}
.tz-converter-card.dark-theme .tz-state-selected {
    background: #6366f1 !important;
    border-color: #6366f1 !important;
    box-shadow: 0 3px 8px rgba(99, 102, 241, 0.4);
}
.tz-converter-card.dark-theme .tz-format-toggle {
    background: rgba(255,255,255,0.08);
}
.tz-converter-card.dark-theme .tz-format-toggle button {
    color: #94a3b8;
}
.tz-converter-card.dark-theme .tz-format-toggle button.active {
    background: #242424;
    color: #818cf8;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.tz-converter-card.dark-theme .tz-display-abbrev,
.tz-converter-card.dark-theme .tz-display-date,
.tz-converter-card.dark-theme .tz-display-comparison {
    color: #94a3b8;
}

.tz-converter-card:fullscreen {
    background: var(--cdt-bg) !important;
    padding: 2.5rem !important;
    overflow-y: auto;
    border-radius: 0;
}
.tz-converter-card.dark-theme:fullscreen {
    background: #121212 !important;
}

/* Popular Conversions Styles */
.tz-popular-section {
    position: relative;
    overflow: hidden;
    transition: var(--cdt-transition);
}

.tz-popular-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.tz-popular-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(29, 112, 184, 0.15);
    color: var(--cdt-blue);
    padding: 0.55rem 1.1rem;
    border-radius: 50px;
    font-size: 0.825rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
}

.tz-popular-btn:hover {
    background: linear-gradient(135deg, var(--cdt-blue) 0%, #175e9b 100%);
    color: #ffffff !important;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(29, 112, 184, 0.25);
}

.tz-popular-btn:active {
    transform: translateY(0);
}

/* Dark theme support for popular conversions */
.tz-converter-card.dark-theme.tz-popular-section {
    background: rgba(30, 41, 59, 0.6) !important;
    border-color: #334155 !important;
}

.tz-converter-card.dark-theme .tz-popular-btn {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: #e2e8f0;
}

.tz-converter-card.dark-theme .tz-popular-btn:hover {
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #ffffff !important;
    border-color: transparent;
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}