/* Stackaris Unix Timestamp Converter — scoped, responsive, no external dependencies */
.uts-tool {
    --uts-primary:      #6d28d9;
    --uts-primary-2:    #0ea5e9;
    --uts-accent:       #10b981;
    --uts-accent-2:     #f59e0b;
    --uts-bg:           #0b0f1a;
    --uts-bg-2:         #0d1120;
    --uts-bg-3:         #111827;
    --uts-card:         rgba(17, 24, 39, 0.94);
    --uts-card-solid:   #111827;
    --uts-card-raised:  #1a2236;
    --uts-code:         rgba(10, 15, 28, 0.72);
    --uts-text:         #e8edf8;
    --uts-muted:        #8b9ab5;
    --uts-faint:        #4e5f7a;
    --uts-border:       rgba(255, 255, 255, 0.08);
    --uts-border-2:     rgba(109, 40, 217, 0.28);
    --uts-success:      #10b981;
    --uts-warning:      #f59e0b;
    --uts-danger:       #f43f5e;
    --uts-shadow:       0 20px 60px rgba(0, 0, 0, 0.5);
    --uts-shadow-soft:  0 8px 28px rgba(0, 0, 0, 0.36);
    --uts-shadow-glow:  0 0 0 1px rgba(109, 40, 217, 0.22), 0 8px 28px rgba(109, 40, 217, 0.14);
    --uts-radius-sm:    8px;
    --uts-radius:       14px;
    --uts-radius-lg:    20px;
    --uts-font:         system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --uts-mono:         "Cascadia Code", "Fira Code", "JetBrains Mono", Consolas, monospace;
    background:
        radial-gradient(ellipse 80% 40% at 50% 0%, rgba(109, 40, 217, 0.12), transparent 60%),
        var(--uts-bg);
    color: var(--uts-text);
    font-family: var(--uts-font);
    line-height: 1.6;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    overflow-x: hidden;
    width: 100vw;
}

/* Light theme */
.uts-tool[data-theme="light"] {
    --uts-bg:           #f3f4f8;
    --uts-bg-2:         #ffffff;
    --uts-bg-3:         #eef0f7;
    --uts-card:         rgba(255, 255, 255, 0.95);
    --uts-card-solid:   #ffffff;
    --uts-card-raised:  #f8f9fc;
    --uts-code:         #f1f2f7;
    --uts-text:         #111827;
    --uts-muted:        #4b5563;
    --uts-faint:        #9ca3af;
    --uts-border:       rgba(0, 0, 0, 0.09);
    --uts-border-2:     rgba(109, 40, 217, 0.24);
    --uts-shadow:       0 20px 60px rgba(0, 0, 0, 0.12);
    --uts-shadow-soft:  0 8px 28px rgba(0, 0, 0, 0.09);
    --uts-shadow-glow:  0 0 0 1px rgba(109, 40, 217, 0.18), 0 8px 28px rgba(109, 40, 217, 0.1);
}

.uts-tool,
.uts-tool *,
.uts-tool *::before,
.uts-tool *::after {
    box-sizing: border-box;
}

.uts-tool h1, .uts-tool h2, .uts-tool h3,
.uts-tool p, .uts-tool ul { margin-top: 0; }

.uts-tool a { color: inherit; }

/* ═══════════════════════════════════
   HERO
═══════════════════════════════════ */
.uts-hero {
    background:
        radial-gradient(ellipse 70% 56% at 50% -10%, rgba(109, 40, 217, 0.22), transparent 65%),
        radial-gradient(ellipse 40% 30% at 80% 50%, rgba(14, 165, 233, 0.1), transparent 60%);
    padding: 60px 20px 0;
    position: relative;
}

.uts-hero__inner {
    align-items: flex-start;
    display: grid;
    gap: 40px;
    grid-template-columns: 1fr minmax(300px, 420px);
    margin: 0 auto;
    max-width: 1240px;
    padding-bottom: 36px;
    width: calc(100% - 40px);
}

.uts-kicker,
.uts-eyebrow {
    color: var(--uts-primary-2);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.uts-hero h1 {
    background: linear-gradient(135deg, var(--uts-text) 20%, var(--uts-primary), var(--uts-primary-2));
    background-clip: text;
    font-size: clamp(2.1rem, 5vw, 3.4rem);
    font-weight: 900;
    letter-spacing: -0.01em;
    line-height: 1.1;
    margin-bottom: 16px;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.uts-hero__copy {
    color: var(--uts-muted);
    font-size: 1.02rem;
    line-height: 1.75;
    margin-bottom: 24px;
    max-width: 600px;
}

.uts-hero__stats {
    align-items: flex-start;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
}

.uts-hero__stats span {
    border-right: 1px solid var(--uts-border);
    color: var(--uts-faint);
    display: inline-flex;
    flex-direction: column;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    min-width: 90px;
    padding: 0 18px 0 0;
    margin-right: 18px;
    text-transform: uppercase;
}

.uts-hero__stats span:last-child {
    border-right: 0;
}

.uts-hero__stats strong {
    color: var(--uts-primary);
    display: block;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    text-transform: none;
}

/* Live panel in hero */
.uts-hero__live-panel {
    background: var(--uts-card);
    border: 1px solid var(--uts-border-2);
    border-radius: var(--uts-radius-lg);
    box-shadow: var(--uts-shadow-glow);
    overflow: hidden;
}

.uts-live-hero-card {
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(109, 40, 217, 0.16), transparent 70%),
        var(--uts-card-raised);
    padding: 24px;
    text-align: center;
}

.uts-live-hero-card__label {
    color: var(--uts-muted);
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.uts-live-hero-card__value {
    color: var(--uts-primary-2);
    display: block;
    font-family: var(--uts-mono);
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.2;
    margin-bottom: 8px;
}

.uts-live-hero-card__sub {
    color: var(--uts-faint);
    display: block;
    font-size: 0.72rem;
    margin-bottom: 16px;
}

.uts-btn--copy-hero {
    background: linear-gradient(135deg, var(--uts-primary), var(--uts-primary-2));
    border: 0;
    border-radius: var(--uts-radius-sm);
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 8px 18px;
    transition: transform 0.16s ease, box-shadow 0.16s ease;
}

.uts-btn--copy-hero:hover {
    box-shadow: 0 8px 24px rgba(109, 40, 217, 0.38);
    transform: translateY(-1px);
}

.uts-live-hero-row {
    border-top: 1px solid var(--uts-border);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.uts-live-pill {
    border-right: 1px solid var(--uts-border);
    padding: 12px 14px;
    text-align: center;
}

.uts-live-pill:last-child { border-right: 0; }

.uts-live-pill span {
    color: var(--uts-faint);
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.uts-live-pill strong {
    color: var(--uts-text);
    display: block;
    font-family: var(--uts-mono);
    font-size: 0.82rem;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Modebar */
.uts-modebar {
    align-items: center;
    background: var(--uts-card);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius);
    box-shadow: var(--uts-shadow-soft);
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    max-width: 1240px;
    padding: 12px 18px;
    width: calc(100% - 40px);
    margin-top: 22px;
    margin-bottom: 0;
}

.uts-modebar__name {
    color: var(--uts-muted);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.uts-theme-toggle {
    align-items: center;
    background: rgba(109, 40, 217, 0.1);
    border: 1px solid rgba(109, 40, 217, 0.28);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-primary);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    gap: 8px;
    padding: 7px 12px;
    transition: background 0.16s ease, border-color 0.16s ease;
}

.uts-theme-toggle:hover {
    background: rgba(109, 40, 217, 0.18);
}

.uts-theme-toggle__track {
    background: linear-gradient(135deg, var(--uts-primary), var(--uts-primary-2));
    border-radius: 999px;
    flex-shrink: 0;
    height: 18px;
    position: relative;
    width: 34px;
}

.uts-theme-toggle__track::after {
    background: #fff;
    border-radius: 50%;
    content: "";
    height: 14px;
    left: 2px;
    position: absolute;
    top: 2px;
    transform: translateX(16px);
    transition: transform 0.18s ease;
    width: 14px;
}

.uts-tool[data-theme="light"] .uts-theme-toggle__track::after {
    transform: translateX(0);
}

/* ═══════════════════════════════════
   AD BANNER
═══════════════════════════════════ */
.uts-ad-wrap {
    margin: 22px auto 0;
    max-width: 1240px;
    width: calc(100% - 40px);
}

.uts-ad-placeholder {
    align-items: center;
    background: var(--uts-card-solid);
    border: 1px dashed var(--uts-border);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-faint);
    display: flex;
    flex-direction: column;
    font-size: 0.75rem;
    font-weight: 600;
    gap: 3px;
    height: 90px;
    justify-content: center;
    letter-spacing: 0.04em;
    max-width: 728px;
    text-transform: uppercase;
    width: 100%;
}

/* ═══════════════════════════════════
   LIVE STATS BAR
═══════════════════════════════════ */
.uts-stats-bar {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    margin: 18px auto 0;
    max-width: 1240px;
    width: calc(100% - 40px);
}

.uts-stat-card {
    background: var(--uts-card);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius);
    box-shadow: var(--uts-shadow-soft);
    display: grid;
    gap: 6px;
    padding: 14px 16px;
    position: relative;
}

.uts-stat-card__label {
    color: var(--uts-faint);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.uts-stat-card__val {
    color: var(--uts-text);
    font-family: var(--uts-mono);
    font-size: 0.84rem;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.uts-stat-card__val--ms {
    font-size: 0.72rem;
}

.uts-stat-card__copy {
    align-self: end;
    background: transparent;
    border: 1px solid var(--uts-border);
    border-radius: 5px;
    color: var(--uts-faint);
    cursor: pointer;
    font: inherit;
    font-size: 0.68rem;
    font-weight: 700;
    justify-self: start;
    padding: 3px 8px;
    transition: background 0.14s ease, color 0.14s ease;
}

.uts-stat-card__copy:hover {
    background: rgba(109, 40, 217, 0.12);
    color: var(--uts-primary);
    border-color: rgba(109, 40, 217, 0.3);
}

/* ═══════════════════════════════════
   WORKSPACE GRID
═══════════════════════════════════ */
.uts-workspace {
    display: grid;
    gap: 18px;
    grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.8fr);
    margin: 18px auto 0;
    max-width: 1240px;
    width: calc(100% - 40px);
}

/* ═══════════════════════════════════
   PANELS
═══════════════════════════════════ */
.uts-panel {
    background: var(--uts-card);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-lg);
    box-shadow: var(--uts-shadow-soft);
    min-width: 0;
    overflow: hidden;
}

.uts-panel__header {
    align-items: center;
    border-bottom: 1px solid var(--uts-border);
    display: flex;
    gap: 14px;
    justify-content: space-between;
    padding: 18px 22px;
}

.uts-panel__header h2 {
    color: var(--uts-text);
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.25;
    margin: 0;
}

.uts-panel__section-head {
    border-bottom: 1px solid var(--uts-border);
    padding: 12px 18px;
}

/* ═══════════════════════════════════
   BADGE / STATUS
═══════════════════════════════════ */
.uts-badge {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: 999px;
    color: var(--uts-muted);
    flex-shrink: 0;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    padding: 6px 12px;
    text-transform: uppercase;
    transition: color 0.18s ease, border-color 0.18s ease;
}

.uts-badge.is-good { color: var(--uts-success); border-color: rgba(16, 185, 129, 0.3); }
.uts-badge.is-warn { color: var(--uts-warning); border-color: rgba(245, 158, 11, 0.3); }
.uts-badge.is-bad  { color: var(--uts-danger);  border-color: rgba(244, 63, 94, 0.3);  }

/* ═══════════════════════════════════
   TABS
═══════════════════════════════════ */
.uts-tabs {
    background: var(--uts-card-solid);
    border-bottom: 1px solid var(--uts-border);
    display: flex;
    gap: 0;
    padding: 0 22px;
}

.uts-tab {
    background: transparent;
    border: 0;
    border-bottom: 2px solid transparent;
    color: var(--uts-muted);
    cursor: pointer;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 700;
    margin-bottom: -1px;
    padding: 13px 16px;
    transition: color 0.16s ease, border-color 0.16s ease;
    white-space: nowrap;
}

.uts-tab:hover { color: var(--uts-text); }

.uts-tab.is-active {
    border-bottom-color: var(--uts-primary);
    color: var(--uts-primary);
}

/* ═══════════════════════════════════
   PANES
═══════════════════════════════════ */
.uts-pane {
    padding: 20px 22px;
}

.uts-pane[hidden] { display: none; }

/* ═══════════════════════════════════
   FORM ELEMENTS
═══════════════════════════════════ */
.uts-label {
    color: var(--uts-text);
    display: block;
    font-size: 0.84rem;
    font-weight: 800;
    margin-bottom: 7px;
}

.uts-hint {
    color: var(--uts-muted);
    font-size: 0.78rem;
    font-style: italic;
}

.uts-field-row {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 7px;
}

.uts-field-row .uts-label { margin-bottom: 0; }

.uts-input-block {
    margin-bottom: 16px;
}

.uts-input-row {
    display: flex;
    gap: 8px;
}

.uts-input {
    background: var(--uts-code);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-text);
    flex: 1;
    font: inherit;
    font-size: 0.94rem;
    min-width: 0;
    padding: 11px 14px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.uts-input--mono { font-family: var(--uts-mono); font-size: 1rem; }
.uts-input--num  { max-width: 100px; text-align: center; }

.uts-input:focus {
    border-color: rgba(109, 40, 217, 0.52);
    box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.13);
    outline: none;
}

.uts-input::placeholder { color: var(--uts-faint); }

.uts-select {
    appearance: none;
    background: var(--uts-code);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8' viewBox='0 0 14 8'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%236d28d9' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 12px;
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-text);
    font: inherit;
    font-size: 0.88rem;
    padding: 10px 38px 10px 13px;
    transition: border-color 0.16s ease;
    width: 100%;
}

.uts-select:focus {
    border-color: rgba(109, 40, 217, 0.52);
    box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.13);
    outline: none;
}

/* ═══════════════════════════════════
   SWITCH TOGGLE
═══════════════════════════════════ */
.uts-switch {
    align-items: center;
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-text);
    cursor: pointer;
    display: inline-flex;
    font-size: 0.84rem;
    font-weight: 700;
    gap: 9px;
    padding: 8px 12px;
    transition: border-color 0.16s ease, background 0.16s ease;
}

.uts-switch:hover { background: var(--uts-card-raised); }

.uts-switch input {
    accent-color: var(--uts-primary);
    height: 16px;
    width: 16px;
}

/* ═══════════════════════════════════
   CONTROLS ROW
═══════════════════════════════════ */
.uts-controls-row {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.uts-samples {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.uts-samples > span {
    color: var(--uts-faint);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
}

.uts-sample {
    background: rgba(109, 40, 217, 0.1);
    border: 1px solid rgba(109, 40, 217, 0.22);
    border-radius: 6px;
    color: var(--uts-primary);
    cursor: pointer;
    font: inherit;
    font-size: 0.76rem;
    font-weight: 800;
    padding: 4px 10px;
    transition: background 0.14s ease, transform 0.14s ease;
}

.uts-sample:hover {
    background: rgba(109, 40, 217, 0.2);
    transform: translateY(-1px);
}

/* ═══════════════════════════════════
   BUTTONS
═══════════════════════════════════ */
.uts-btn {
    align-items: center;
    border-radius: var(--uts-radius-sm);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 800;
    gap: 7px;
    justify-content: center;
    min-height: 40px;
    padding: 9px 16px;
    transition: background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, color 0.16s ease, transform 0.16s ease;
    white-space: nowrap;
}

.uts-btn:focus-visible {
    border-color: rgba(109, 40, 217, 0.52);
    box-shadow: 0 0 0 3px rgba(109, 40, 217, 0.18);
    outline: none;
}

.uts-btn--primary {
    background: linear-gradient(135deg, var(--uts-primary), var(--uts-primary-2));
    border: 0;
    box-shadow: 0 8px 22px rgba(109, 40, 217, 0.32);
    color: #fff;
}

.uts-btn--primary:hover {
    box-shadow: 0 12px 30px rgba(109, 40, 217, 0.42);
    transform: translateY(-1px);
}

.uts-btn--ghost {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    color: var(--uts-text);
}

.uts-btn--ghost:hover {
    background: var(--uts-card-raised);
    border-color: rgba(109, 40, 217, 0.3);
    transform: translateY(-1px);
}

.uts-btn--quiet {
    background: transparent;
    border: 1px solid var(--uts-border);
    color: var(--uts-muted);
}

.uts-btn--quiet:hover { color: var(--uts-text); border-color: var(--uts-muted); }

.uts-btn--sm { font-size: 0.78rem; min-height: 32px; padding: 5px 12px; }

/* ═══════════════════════════════════
   RESULTS
═══════════════════════════════════ */
.uts-results {
    border-top: 1px solid var(--uts-border);
    padding: 20px 22px;
}

.uts-results__heading {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
}

.uts-results__ts-label {
    color: var(--uts-primary-2);
    font-family: var(--uts-mono);
    font-size: 0.84rem;
    font-weight: 700;
}

.uts-result-grid {
    display: grid;
    gap: 10px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 16px;
}

.uts-result-card {
    align-items: center;
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    display: grid;
    gap: 4px;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-rows: auto auto;
    padding: 12px 14px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.uts-result-card:hover {
    border-color: rgba(109, 40, 217, 0.28);
    box-shadow: 0 4px 14px rgba(109, 40, 217, 0.1);
}

.uts-result-card__fmt {
    color: var(--uts-faint);
    font-size: 0.68rem;
    font-weight: 800;
    grid-column: 1;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.uts-result-card__val {
    color: var(--uts-text);
    font-size: 0.84rem;
    font-weight: 700;
    grid-column: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.uts-result-card__val--mono {
    font-family: var(--uts-mono);
    font-size: 0.78rem;
}

.uts-result-card__copy {
    align-items: center;
    background: transparent;
    border: 1px solid var(--uts-border);
    border-radius: 5px;
    color: var(--uts-faint);
    cursor: pointer;
    font: inherit;
    font-size: 0.68rem;
    font-weight: 800;
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-content: center;
    display: flex;
    padding: 5px 8px;
    transition: background 0.14s ease, color 0.14s ease, border-color 0.14s ease;
    white-space: nowrap;
}

.uts-result-card__copy:hover {
    background: rgba(109, 40, 217, 0.12);
    border-color: rgba(109, 40, 217, 0.3);
    color: var(--uts-primary);
}

/* Meta grid */
.uts-meta-grid {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    display: grid;
    gap: 0;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    margin-bottom: 16px;
    overflow: hidden;
}

.uts-meta-item {
    border-right: 1px solid var(--uts-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    text-align: center;
}

.uts-meta-item:last-child { border-right: 0; }

.uts-meta-item span {
    color: var(--uts-faint);
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.uts-meta-item strong {
    color: var(--uts-text);
    font-size: 0.84rem;
    font-weight: 800;
}

.uts-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

/* ═══════════════════════════════════
   SIDEBAR
═══════════════════════════════════ */
.uts-panel--side {
    align-self: start;
    display: flex;
    flex-direction: column;
}

.uts-tz-section {
    padding: 16px 18px;
}

.uts-tz-quick {
    margin-bottom: 14px;
}

.uts-tz-quick__label {
    color: var(--uts-faint);
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.uts-tz-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.uts-tz-chip {
    background: rgba(109, 40, 217, 0.08);
    border: 1px solid rgba(109, 40, 217, 0.2);
    border-radius: 6px;
    color: var(--uts-muted);
    cursor: pointer;
    font: inherit;
    font-size: 0.74rem;
    font-weight: 700;
    padding: 5px 10px;
    transition: background 0.14s ease, color 0.14s ease, border-color 0.14s ease;
    white-space: nowrap;
}

.uts-tz-chip:hover,
.uts-tz-chip.is-active {
    background: linear-gradient(135deg, rgba(109, 40, 217, 0.2), rgba(14, 165, 233, 0.2));
    border-color: rgba(109, 40, 217, 0.42);
    color: var(--uts-primary);
}

.uts-tz-select-row {
    margin-bottom: 14px;
}

.uts-tz-result {
    background: var(--uts-card-raised);
    border: 1px solid var(--uts-border-2);
    border-radius: var(--uts-radius);
    margin-bottom: 16px;
    padding: 16px;
}

.uts-tz-result__tz {
    color: var(--uts-primary-2);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.uts-tz-result__time {
    color: var(--uts-text);
    font-family: var(--uts-mono);
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
    word-break: break-all;
}

.uts-tz-result__offset {
    color: var(--uts-muted);
    font-size: 0.78rem;
    margin-bottom: 12px;
}

/* World Clock */
.uts-world-clock {
    border-top: 1px solid var(--uts-border);
    padding-top: 14px;
}

.uts-world-clock .uts-eyebrow {
    display: block;
    margin-bottom: 10px;
}

.uts-world-clock__grid {
    display: grid;
    gap: 6px;
}

.uts-wc-row {
    align-items: center;
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    display: flex;
    justify-content: space-between;
    padding: 9px 12px;
}

.uts-wc-row__city {
    color: var(--uts-muted);
    font-size: 0.78rem;
    font-weight: 700;
    min-width: 90px;
}

.uts-wc-row__time {
    color: var(--uts-text);
    font-family: var(--uts-mono);
    font-size: 0.84rem;
    font-weight: 800;
}

.uts-wc-row__offset {
    color: var(--uts-faint);
    font-size: 0.68rem;
    font-weight: 700;
    min-width: 60px;
    text-align: right;
}

/* UTC ↔ Local */
.uts-utc-local {
    border-top: 1px solid var(--uts-border);
    padding: 14px 18px;
}

.uts-utc-local__grid {
    align-items: center;
    display: grid;
    gap: 10px;
    grid-template-columns: 1fr auto 1fr;
    margin-bottom: 8px;
}

.uts-utc-local__grid div {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    padding: 10px 12px;
    text-align: center;
}

.uts-utc-local__grid div span {
    color: var(--uts-faint);
    display: block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.uts-utc-local__grid div strong {
    color: var(--uts-text);
    display: block;
    font-family: var(--uts-mono);
    font-size: 0.8rem;
    font-weight: 700;
    word-break: break-all;
}

.uts-utc-local__arrow {
    color: var(--uts-primary);
    font-size: 1.2rem;
    text-align: center;
}

.uts-utc-local__diff {
    color: var(--uts-muted);
    font-size: 0.8rem;
    text-align: center;
}

/* ═══════════════════════════════════
   ADVANCED SECTION
═══════════════════════════════════ */
.uts-advanced {
    display: grid;
    gap: 18px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 18px auto 0;
    max-width: 1240px;
    width: calc(100% - 40px);
}

.uts-diff-body,
.uts-add-body {
    padding: 18px 22px;
}

.uts-diff-inputs {
    align-items: flex-end;
    display: grid;
    gap: 10px;
    grid-template-columns: 1fr auto 1fr;
    margin-bottom: 14px;
}

.uts-diff-sep {
    color: var(--uts-primary);
    font-size: 1.4rem;
    font-weight: 900;
    padding-bottom: 11px;
    text-align: center;
}

.uts-diff-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.uts-diff-results {
    border-top: 1px solid var(--uts-border);
    padding-top: 16px;
}

.uts-diff-grid {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 12px;
}

.uts-diff-unit {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    padding: 12px;
    text-align: center;
}

.uts-diff-unit strong {
    color: var(--uts-primary-2);
    display: block;
    font-family: var(--uts-mono);
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.uts-diff-unit span {
    color: var(--uts-faint);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.uts-diff-human {
    background: linear-gradient(135deg, rgba(109, 40, 217, 0.08), rgba(14, 165, 233, 0.08));
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-sm);
    color: var(--uts-text);
    font-size: 0.9rem;
    font-weight: 700;
    padding: 12px 14px;
    text-align: center;
}

/* Add/Subtract */
.uts-add-controls {
    align-items: center;
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.uts-add-op {
    font-size: 1.3rem;
    font-weight: 900;
    min-height: 42px;
    padding: 0 16px;
}

.uts-add-result {
    background: var(--uts-card-raised);
    border: 1px solid var(--uts-border-2);
    border-radius: var(--uts-radius);
    overflow: hidden;
}

.uts-add-result__row {
    align-items: center;
    border-bottom: 1px solid var(--uts-border);
    display: flex;
    gap: 10px;
    padding: 11px 14px;
}

.uts-add-result__row:last-child { border-bottom: 0; }

.uts-add-result__row span {
    color: var(--uts-faint);
    flex-shrink: 0;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    min-width: 120px;
    text-transform: uppercase;
}

.uts-add-result__row strong {
    color: var(--uts-text);
    flex: 1;
    font-family: var(--uts-mono);
    font-size: 0.88rem;
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ═══════════════════════════════════
   SEO CONTENT SECTION
═══════════════════════════════════ */
.uts-content {
    background: var(--uts-card);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-lg);
    box-shadow: var(--uts-shadow-soft);
    margin: 18px auto 0;
    max-width: 1240px;
    padding: 40px 36px;
    width: calc(100% - 40px);
}

.uts-content__intro {
    margin-bottom: 32px;
    max-width: 640px;
}

.uts-content__intro h2 {
    color: var(--uts-text);
    font-size: 1.6rem;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 10px;
}

.uts-content__intro p {
    color: var(--uts-muted);
}

.uts-content__grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.uts-content-card {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius);
    padding: 20px;
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.uts-content-card:hover {
    border-color: rgba(109, 40, 217, 0.28);
    box-shadow: 0 4px 16px rgba(109, 40, 217, 0.1);
}

.uts-content-card h3 {
    color: var(--uts-text);
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.uts-content-card p,
.uts-content-card ul {
    color: var(--uts-muted);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.uts-content-card ul {
    padding-left: 16px;
}

.uts-content-card li {
    margin-bottom: 4px;
}

.uts-content-card code {
    background: rgba(109, 40, 217, 0.12);
    border-radius: 4px;
    color: var(--uts-primary-2);
    font-family: var(--uts-mono);
    font-size: 0.84em;
    padding: 1px 5px;
}

/* ═══════════════════════════════════
   FAQ
═══════════════════════════════════ */
.uts-faq,
.uts-related {
    background: var(--uts-card);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius-lg);
    box-shadow: var(--uts-shadow-soft);
    margin: 18px auto 0;
    max-width: 1240px;
    width: calc(100% - 40px);
}

.uts-section-heading {
    border-bottom: 1px solid var(--uts-border);
    padding: 22px 28px;
}

.uts-section-heading h2 {
    color: var(--uts-text);
    font-size: 1.3rem;
    font-weight: 900;
    margin: 0;
}

.uts-faq details {
    border-bottom: 1px solid var(--uts-border);
    margin: 0 28px;
    padding: 16px 0;
}

.uts-faq details:last-child { border-bottom: 0; }

.uts-faq summary {
    color: var(--uts-text);
    cursor: pointer;
    font-size: 0.96rem;
    font-weight: 800;
    list-style: none;
    padding-right: 24px;
    position: relative;
}

.uts-faq summary::-webkit-details-marker { display: none; }

.uts-faq summary::after {
    color: var(--uts-primary);
    content: "+";
    font-size: 1.2rem;
    font-weight: 400;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.18s ease;
}

.uts-faq details[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.uts-faq details p {
    color: var(--uts-muted);
    font-size: 0.9rem;
    line-height: 1.75;
    margin-top: 10px;
}

.uts-faq details code {
    background: rgba(109, 40, 217, 0.12);
    border-radius: 4px;
    color: var(--uts-primary-2);
    font-family: var(--uts-mono);
    font-size: 0.85em;
    padding: 1px 5px;
}

/* ═══════════════════════════════════
   RELATED
═══════════════════════════════════ */
.uts-related {
    margin-bottom: 60px;
    padding-bottom: 24px;
}

.uts-related__grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    padding: 20px 28px 0;
}

.uts-related a {
    background: var(--uts-card-solid);
    border: 1px solid var(--uts-border);
    border-radius: var(--uts-radius);
    color: var(--uts-text);
    font-size: 0.9rem;
    font-weight: 800;
    padding: 18px;
    text-align: center;
    text-decoration: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.uts-related a:hover {
    border-color: rgba(109, 40, 217, 0.42);
    box-shadow: 0 6px 20px rgba(109, 40, 217, 0.14);
    color: var(--uts-primary);
    transform: translateY(-2px);
}

/* ═══════════════════════════════════
   REDUCED MOTION
═══════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    .uts-tool *, .uts-tool *::before, .uts-tool *::after {
        transition: none !important;
        animation: none !important;
    }
}

/* ═══════════════════════════════════
   RESPONSIVE — 1100px
═══════════════════════════════════ */
@media (max-width: 1100px) {
    .uts-stats-bar {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .uts-workspace {
        grid-template-columns: 1fr;
    }

    .uts-panel--side {
        align-self: stretch;
    }

    .uts-tz-section {
        display: grid;
        gap: 16px;
        grid-template-columns: 1fr 1fr;
    }

    .uts-utc-local {
        grid-column: 1 / -1;
    }

    .uts-world-clock {
        grid-column: 1 / -1;
    }

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

/* ═══════════════════════════════════
   RESPONSIVE — 820px
═══════════════════════════════════ */
@media (max-width: 820px) {
    .uts-hero__inner {
        grid-template-columns: 1fr;
    }

    .uts-hero__live-panel {
        max-width: 480px;
    }

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

    .uts-advanced {
        grid-template-columns: 1fr;
    }

    .uts-meta-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .uts-meta-item:nth-child(3) { border-right: 0; }
    .uts-meta-item:nth-child(4),
    .uts-meta-item:nth-child(5) { border-top: 1px solid var(--uts-border); }

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

    .uts-tz-section {
        grid-template-columns: 1fr;
    }
}

/* ═══════════════════════════════════
   RESPONSIVE — 640px
═══════════════════════════════════ */
@media (max-width: 640px) {
    .uts-hero {
        padding: 40px 16px 0;
    }

    .uts-hero__inner,
    .uts-modebar,
    .uts-ad-wrap,
    .uts-stats-bar,
    .uts-workspace,
    .uts-advanced,
    .uts-content,
    .uts-faq,
    .uts-related {
        width: calc(100% - 28px);
    }

    .uts-stats-bar {
        grid-template-columns: 1fr 1fr;
    }

    .uts-result-grid {
        grid-template-columns: 1fr;
    }

    .uts-diff-inputs {
        grid-template-columns: 1fr;
    }

    .uts-diff-sep { display: none; }

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

    .uts-add-controls {
        flex-wrap: wrap;
    }

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

    .uts-meta-item:nth-child(even) { border-right: 0; }
    .uts-meta-item:nth-child(3),
    .uts-meta-item:nth-child(4),
    .uts-meta-item:nth-child(5),
    .uts-meta-item:nth-child(6) { border-top: 1px solid var(--uts-border); }

    .uts-live-hero-row {
        grid-template-columns: 1fr;
    }

    .uts-live-pill {
        border-right: 0;
        border-bottom: 1px solid var(--uts-border);
    }

    .uts-live-pill:last-child { border-bottom: 0; }

    .uts-content {
        padding: 28px 20px;
    }

    .uts-content__grid {
        grid-template-columns: 1fr;
    }

    .uts-faq details,
    .uts-related__grid {
        margin-left: 16px;
        margin-right: 16px;
    }

    .uts-section-heading {
        padding: 18px 20px;
    }

    .uts-related__grid {
        grid-template-columns: 1fr 1fr;
        padding: 16px 16px 0;
    }

    .uts-panel__header,
    .uts-modebar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .uts-result-actions {
        flex-direction: column;
    }

    .uts-result-actions .uts-btn {
        width: 100%;
    }
}

/* ═══════════════════════════════════
   RESPONSIVE — 420px
═══════════════════════════════════ */
@media (max-width: 420px) {
    .uts-hero h1 {
        font-size: 1.9rem;
    }

    .uts-stats-bar {
        grid-template-columns: 1fr;
    }

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

    .uts-controls-row .uts-btn,
    .uts-controls-row .uts-switch {
        width: 100%;
    }

    .uts-diff-grid {
        grid-template-columns: 1fr 1fr;
    }

    .uts-related__grid {
        grid-template-columns: 1fr;
    }
}