:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary: #3b82f6;
    --accent: #a855f7;
    --danger: #ef4444;
    --text: #f8fafc;
    --progress-bg: #334155;
    --warning: #fbbf24;
    --input-bg: #0f172a;
    --playing-glow: rgba(255, 255, 255, 0.3);
    --panel-bg: rgba(30, 41, 59, 0.95);
    --panel-border: rgba(148, 163, 184, 0.25);
}

html[data-theme="light"] {
    --bg-color: #f1f5f9;
    --card-bg: #ffffff;
    --primary: #2563eb;
    --accent: #7c3aed;
    --danger: #dc2626;
    --text: #0f172a;
    --progress-bg: #e2e8f0;
    --warning: #fbbf24;
    --input-bg: #ffffff;
    --playing-glow: rgba(37, 99, 235, 0.25);
    --panel-bg: rgba(255, 255, 255, 0.95);
    --panel-border: rgba(15, 23, 42, 0.12);
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg-color);
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 450px;
    position: relative;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.btn {
    position: relative;
    border: none;
    padding: 20px 5px;
    border-radius: 16px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    width: 100%;
    opacity: 0.8;
    min-height: 120px;
    justify-content: center;
}

.btn small {
    font-size: 0.6rem;
    opacity: 0.7;
    line-height: 1.2;
}

.btn:hover {
    opacity: 1;
}

.btn:active {
    transform: translateY(2px);
}

.btn-intro {
    background: var(--primary);
}

.btn-comedy {
    background: var(--accent);
}

.btn-stop {
    grid-column: span 3;
    background: var(--danger);
    text-transform: uppercase;
    padding: 15px;
    margin-top: 10px;
    opacity: 1;
    min-height: auto;
}

.btn.is-playing {
    opacity: 1;
    box-shadow: 0 0 20px var(--playing-glow);
    transform: scale(1.05);
    outline: 2px solid white;
    z-index: 2;
}
.btn .icon{
    font-size: 3rem;
}

.is-playing .icon {
    animation: pulse 1s infinite alternate;
}

@keyframes pulse {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.2);
    }
}

.fade-settings {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 0.65rem;
    color: #94a3b8;
}

.fade-input {
    width: 35px;
    background: var(--input-bg);
    border: 1px solid #334155;
    color: white;
    border-radius: 4px;
    padding: 2px;
    text-align: center;
}

.countdown-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--warning);
    color: #000;
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    font-weight: 800;
}

.countdown-number {
    font-size: 1.5rem;
}

.speak-now {
    background: #22c55e !important;
    color: white !important;
}

.progress-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    width: 100%;
}

#current-time, #total-time {
    font-size: 0.7rem;
    color: #94a3b8;
    min-width: 35px; /* Ensures text doesn't jitter when time changes */
    text-align: center;
    font-variant-numeric: tabular-nums; /* Keeps numbers aligned */
}

.progress-container {
    flex-grow: 1;
    height: 6px;
    background: var(--progress-bg);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(to right, var(--primary), var(--accent));
    transition: width 0.2s ease-out; /* Changed from linear for a smoother feel */
}

.status-text {
    font-size: 0.7rem;
    margin-top: 8px;
    color: #94a3b8;
    text-transform: uppercase;
    min-height: 14px;
    letter-spacing: 1px;
}

.settings-toggle {
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    border: 1px solid var(--panel-border);
    background: var(--panel-bg);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 650;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(10px);
}

.settings-toggle:active {
    transform: translateY(1px);
}

.settings-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 1000;
    display: none;
}

.settings-drawer {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: min(360px, 88vw);
    background: var(--panel-bg);
    border-right: 1px solid var(--panel-border);
    box-shadow: 20px 0 50px rgba(0, 0, 0, 0.45);
    z-index: 1002;
    transform: translateX(-102%);
    transition: transform 220ms ease;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(12px);
}

.settings-drawer.open {
    transform: translateX(0);
}

.settings-overlay.open {
    display: block;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 16px 10px;
    border-bottom: 1px solid var(--panel-border);
}

.settings-title {
    margin: 0;
    font-size: 0.95rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.settings-close {
    border: 1px solid var(--panel-border);
    background: transparent;
    color: var(--text);
    padding: 8px 10px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
}

.serial-connect-btn{
    border: 1px solid black;
    background: rgba(0, 0, 0, 0.1);
    color: black;
    padding: 8px 10px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
}

.settings-content {
    padding: 14px 16px 18px;
    overflow: auto;
}

.settings-section {
    border: 1px solid var(--panel-border);
    border-radius: 14px;
    padding: 12px;
    margin-bottom: 12px;
}

.settings-section h3 {
    margin: 0 0 10px 0;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    opacity: 0.9;
}

.settings-row {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.settings-row + .settings-row {
    border-top: 1px solid rgba(148, 163, 184, 0.15);
}

.settings-row label {
    font-size: 0.85rem;
    opacity: 0.95;
}

.settings-select,
.settings-range {
    accent-color: var(--primary);
}

.settings-select {
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 8px 10px;
    min-width: 150px;
}

.settings-value {
    font-size: 0.8rem;
    opacity: 0.85;
    min-width: 38px;
    text-align: right;
}

.seq-rows { margin: 10px 0; }
.seq-row {
    display: flex;
    gap: 10px;
    margin-bottom: 8px;
    background: #e5e7eb;
    padding: 8px;
    border-radius: 4px;
    align-items: center;
}
.seq-row input {
    width: 80px;
    padding: 5px;
    border: 1px solid #9ca3af;
    border-radius: 4px;
}
.seq-row button {
    background: #ef4444;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
}
[data-theme="dark"] .seq-row { background: #374151; }