/* ==========================================================================
   GRANDMA PROCESSING UNIT (GPU-1) - STYLESHEET
   Supports 3 Eras: 1980 Vintage, 3026 Cyber-Grandma, 20,000 BC Prehistoric
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Theme Variables & Base Setup
   -------------------------------------------------------------------------- */
:root {
    /* Font Families */
    --font-heading: 'Outfit', sans-serif;
    --font-crt: 'VT323', monospace;
    --font-retro: 'Share Tech Mono', monospace;
    --font-arcade: 'Press Start 2P', monospace;
    --font-cozy: 'Caveat', cursive;

    /* Theme 1980 Default Variables */
    --bg-main: #1e1710;
    --bg-card: rgba(38, 28, 20, 0.88);
    --border-color: #d97736;
    --accent-color: #f7a048;
    --text-color: #fceade;
    --text-muted: #c49f82;
    --crt-glow: rgba(247, 160, 72, 0.4);
    --crt-screen-bg: #140d07;
    --terminal-green: #f7a048;
    --btn-bg: #4a2e1b;
    --btn-hover: #6b4329;
    --header-gradient: linear-gradient(135deg, #4a2713, #8c4217, #361708);
    --yarn-border: 4px dashed #e88c38;
}

/* Theme 2025 Modern Grandma */
body.theme-2025 {
    --bg-main: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.88);
    --border-color: #38bdf8;
    --accent-color: #06b6d4;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --crt-glow: rgba(56, 189, 248, 0.4);
    --crt-screen-bg: #020617;
    --terminal-green: #38bdf8;
    --btn-bg: #1e293b;
    --btn-hover: #334155;
    --header-gradient: linear-gradient(135deg, #0f172a, #1e3a8a, #0369a1);
    --yarn-border: 4px double #38bdf8;
}

/* Theme 3026 Cyber-Grandma */
body.theme-3026 {
    --bg-main: #070914;
    --bg-card: rgba(13, 17, 38, 0.88);
    --border-color: #00f0ff;
    --accent-color: #ff0055;
    --text-color: #e0f7ff;
    --text-muted: #79aabf;
    --crt-glow: rgba(0, 240, 255, 0.5);
    --crt-screen-bg: #030611;
    --terminal-green: #00f0ff;
    --btn-bg: #132238;
    --btn-hover: #1f375c;
    --header-gradient: linear-gradient(135deg, #091224, #1a0b2e, #002b47);
    --yarn-border: 4px solid #00f0ff;
}

/* Theme 20,000 BC Prehistoric Cave-Grandma */
body.theme-cave {
    --bg-main: #18120c;
    --bg-card: rgba(36, 26, 17, 0.92);
    --border-color: #a66e38;
    --accent-color: #d94e24;
    --text-color: #f5ebe0;
    --text-muted: #ad9478;
    --crt-glow: rgba(217, 78, 36, 0.4);
    --crt-screen-bg: #0f0a06;
    --terminal-green: #e67e22;
    --btn-bg: #3d2716;
    --btn-hover: #573921;
    --header-gradient: linear-gradient(135deg, #2b180d, #54270f, #1c0e06);
    --yarn-border: 4px dotted #a66e38;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-color);
    font-family: var(--font-heading);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Background Knitted Canvas */
#knit-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    opacity: 0.15;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   2. CRT Scanline & Curved Screen Visual Effects
   -------------------------------------------------------------------------- */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.65) 100%);
    pointer-events: none;
    z-index: 99;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(255,255,255,0),
        rgba(255,255,255,0) 50%,
        rgba(0, 0, 0, 0.25) 50%,
        rgba(0, 0, 0, 0.25)
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 98;
    opacity: 0.7;
}

/* CRT Frame Styling around main cards */
.crt-screen-border {
    position: relative;
    border: 3px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 0 20px var(--crt-glow), inset 0 0 15px rgba(0,0,0,0.8);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
}

/* --------------------------------------------------------------------------
   3. Main App Layout & Header
   -------------------------------------------------------------------------- */
.app-container {
    position: relative;
    z-index: 10;
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gpu-header {
    background: var(--header-gradient);
    border: var(--yarn-border);
    border-radius: 20px;
    padding: 1.5rem 2rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.gpu-chip-icon {
    position: relative;
    font-size: 3rem;
    color: var(--accent-color);
    filter: drop-shadow(0 0 10px var(--accent-color));
}

.cozy-yarn-overlay {
    position: absolute;
    bottom: -5px;
    right: -10px;
    font-size: 1.8rem;
}

.brand-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff;
    text-shadow: 0 0 10px var(--accent-color);
    font-family: var(--font-heading);
}

.badge-v1 {
    font-size: 0.9rem;
    background: var(--accent-color);
    color: #000;
    padding: 2px 8px;
    border-radius: 6px;
    font-family: var(--font-arcade);
    vertical-align: middle;
}

.api-badge {
    font-size: 0.78rem;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 8px;
    font-family: var(--font-retro);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    vertical-align: middle;
    transition: all 0.25s ease;
}

.api-badge.online {
    background: #10b981;
    color: #000;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
}

.api-badge.offline {
    background: #f59e0b;
    color: #000;
}

.brand-tagline {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 600;
}

#era-indicator {
    color: var(--accent-color);
    font-weight: 700;
    text-transform: uppercase;
}

/* Era Selector Switches */
.era-selector-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.selector-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.era-buttons {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.era-btn {
    background: var(--btn-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 0.6rem 1rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: all 0.25s ease;
}

.era-btn .sub-text {
    font-size: 0.75rem;
    opacity: 0.75;
    font-weight: 400;
}

.era-btn:hover {
    background: var(--btn-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--crt-glow);
}

.era-btn.active {
    background: var(--accent-color);
    color: #000;
    border-color: #fff;
    box-shadow: 0 0 15px var(--accent-color);
}

.era-btn.active .sub-text {
    color: #222;
}

/* --------------------------------------------------------------------------
   4. Main Dashboard Grid Structure
   -------------------------------------------------------------------------- */
.gpu-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .gpu-grid {
        grid-template-columns: 1fr;
    }
}

/* Hardware Telemetry Panel */
.hardware-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-card {
    padding: 1.4rem;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px dashed var(--border-color);
    padding-bottom: 0.75rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--accent-color);
    font-family: var(--font-retro);
    letter-spacing: 1px;
}

.status-dot {
    font-size: 0.75rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 12px;
    background: #10b981;
    color: #000;
    font-family: var(--font-arcade);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(0.96); }
}

/* Telemetry Metrics */
.metrics-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.metric-item {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.metric-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 600;
}

.metric-value {
    font-family: var(--font-crt);
    font-size: 1.2rem;
    color: var(--accent-color);
}

.progress-bar {
    height: 12px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease;
}

.candy-fill { background: linear-gradient(90deg, #ec4899, #f43f5e); }
.temp-fill { background: linear-gradient(90deg, #f59e0b, #ef4444); }
.knit-fill { background: linear-gradient(90deg, #3b82f6, #8b5cf6); }
.judgment-fill { background: linear-gradient(90deg, #10b981, #f59e0b, #ef4444); }

/* Hardware Action Buttons */
.hardware-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

.action-btn {
    background: var(--btn-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 0.75rem 0.5rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    text-align: center;
}

.action-btn:hover {
    background: var(--accent-color);
    color: #000;
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--accent-color);
}

/* Candy Jar Interactive Widget */
.cookie-jar-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
}

.jar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.jar-header h3 {
    font-size: 1.05rem;
    color: var(--accent-color);
    font-weight: 700;
}

.candy-counter {
    font-family: var(--font-crt);
    font-size: 1.1rem;
    color: #10b981;
}

.jar-interactive-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    cursor: pointer;
}

.jar-graphic {
    position: relative;
    width: 110px;
    height: 130px;
    transition: transform 0.2s ease;
}

.jar-graphic:hover {
    transform: scale(1.1) rotate(2deg);
}

.jar-lid {
    width: 70px;
    height: 18px;
    background: var(--border-color);
    margin: 0 auto;
    border-radius: 8px 8px 0 0;
    border: 2px solid #fff;
}

.jar-glass {
    width: 100px;
    height: 110px;
    background: rgba(255, 255, 255, 0.15);
    border: 3px solid var(--border-color);
    border-radius: 15px 15px 30px 30px;
    margin: 0 auto;
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 15px rgba(255,255,255,0.2);
}

.candies-inside {
    font-size: 1.4rem;
    text-align: center;
    line-height: 1.4;
    user-select: none;
}

.jar-hint {
    font-size: 0.82rem;
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
}

/* Soundboard Widget */
.soundboard-card h3 {
    font-size: 1.05rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.soundboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.sb-btn {
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 8px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.sb-btn:hover {
    background: var(--btn-hover);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* --------------------------------------------------------------------------
   5. AI Voice Chat Console
   -------------------------------------------------------------------------- */
.chat-console-panel {
    display: flex;
    flex-direction: column;
}

.console-card {
    height: 720px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.console-header {
    padding: 1.2rem 1.5rem;
    background: rgba(0,0,0,0.4);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.grandma-avatar {
    font-size: 2.5rem;
    background: var(--btn-bg);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 10px var(--crt-glow);
    overflow: hidden;
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: 50%;
}

.status-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.voice-controls {
    display: flex;
    gap: 0.75rem;
}

.voice-toggle-btn, .mic-toggle-btn {
    background: var(--btn-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.25s ease;
}

.voice-toggle-btn.active {
    background: #10b981;
    color: #000;
    border-color: #fff;
}

.mic-toggle-btn.recording {
    background: #ef4444;
    color: #fff;
    border-color: #fff;
    animation: pulse 1s infinite;
}

/* Audio Spectrum Visualizer Bar */
.voice-spectrum {
    height: 30px;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0 1rem;
    border-bottom: 1px solid var(--border-color);
}

.voice-spectrum .bar {
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 3px;
    transition: height 0.1s ease;
}

.voice-spectrum.active .bar {
    animation: barPulse 0.4s ease-in-out infinite alternate;
}

.voice-spectrum.active .bar:nth-child(1) { animation-delay: 0.05s; }
.voice-spectrum.active .bar:nth-child(2) { animation-delay: 0.15s; }
.voice-spectrum.active .bar:nth-child(3) { animation-delay: 0.25s; }
.voice-spectrum.active .bar:nth-child(4) { animation-delay: 0.1s; }
.voice-spectrum.active .bar:nth-child(5) { animation-delay: 0.3s; }
.voice-spectrum.active .bar:nth-child(6) { animation-delay: 0.2s; }
.voice-spectrum.active .bar:nth-child(7) { animation-delay: 0.05s; }
.voice-spectrum.active .bar:nth-child(8) { animation-delay: 0.35s; }
.voice-spectrum.active .bar:nth-child(9) { animation-delay: 0.15s; }

@keyframes barPulse {
    0% { height: 4px; }
    100% { height: 22px; }
}

.spectrum-text {
    font-family: var(--font-crt);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 12px;
}

/* Chat History Stream */
.chat-history {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    background: var(--crt-screen-bg);
}

.chat-message {
    display: flex;
    gap: 1rem;
    max-width: 85%;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.grandma-msg {
    align-self: flex-start;
}

.user-msg {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.msg-avatar {
    width: 42px;
    height: 42px;
    background: var(--btn-bg);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    overflow: hidden;
}

.user-msg .msg-avatar {
    background: var(--accent-color);
    color: #000;
}

.msg-content {
    background: rgba(40, 30, 20, 0.75);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem 1.25rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.user-msg .msg-content {
    background: var(--btn-bg);
    border-color: var(--accent-color);
}

.msg-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.4rem;
    font-size: 0.8rem;
}

.speaker-name {
    font-weight: 800;
    color: var(--accent-color);
    font-family: var(--font-retro);
}

.msg-time {
    color: var(--text-muted);
    font-family: var(--font-crt);
}

.msg-text {
    font-size: 1.05rem;
    line-height: 1.55;
    font-family: var(--font-heading);
}

.grandma-msg .msg-text {
    color: var(--text-color);
}

/* Quick Prompts Chips */
.quick-prompts-bar {
    padding: 0.6rem 1.2rem;
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow-x: auto;
    white-space: nowrap;
}

.prompts-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
}

.prompt-chip {
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.35rem 0.75rem;
    border-radius: 14px;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.prompt-chip:hover {
    background: var(--accent-color);
    color: #000;
}

/* Chat Input Form */
.chat-input-form {
    padding: 1rem 1.25rem;
    background: rgba(0,0,0,0.7);
    border-top: 2px solid var(--border-color);
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
}

#user-input {
    flex: 1;
    background: var(--crt-screen-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem 1.2rem;
    color: var(--text-color);
    font-family: var(--font-heading);
    font-size: 1.05rem;
    outline: none;
    transition: border-color 0.25s ease;
}

#user-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--crt-glow);
}

.send-btn {
    background: var(--accent-color);
    color: #000;
    border: none;
    padding: 0 1.5rem;
    border-radius: 12px;
    font-weight: 800;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.send-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 15px var(--accent-color);
}

/* --------------------------------------------------------------------------
   6. Footer & Animations
   -------------------------------------------------------------------------- */
.gpu-footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px dashed var(--border-color);
    margin-top: 1rem;
}

/* Flying Cookie Animation */
.flying-cookie {
    position: fixed;
    font-size: 2.2rem;
    pointer-events: none;
    z-index: 9999;
    animation: cookieFly 1.2s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes cookieFly {
    0% { transform: scale(0.2) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.4) rotate(180deg) translateY(-80px); opacity: 1; }
    100% { transform: scale(1) rotate(360deg) translateY(0); opacity: 0; }
}