:root {
    color-scheme: light only;
    /* Volume & Warm Glow Palette */
    --bg-primary: #faf6f2;
    --accent-glow: #fcb573;
    --accent-warm: #d88163;
    --text-main: #3a2221;
    --text-heading: #4a1a14;

    /* Card Gradients */
    --card-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0.3) 100%);

    /* Advanced Volumetric Shadows */
    --volume-inner-light: inset 1px 1px 2px rgba(255, 255, 255, 0.6);
    --volume-outer-deep: 4px 4px 10px rgba(58, 34, 33, 0.05), -4px -4px 10px rgba(255, 255, 255, 0.9);
    --volume-glow: 0 0 15px rgba(173, 90, 78, 0.15);

    --glass-blur: blur(30px);
}

/* Glass Panels with Tangible Volume */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(250, 246, 242, 0.4);
    position: relative;
    border-radius: 1.75rem;
    box-shadow: var(--volume-inner-light), var(--volume-outer-deep);
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

.glass-panel:hover {
    transform: translateY(-4px);
    box-shadow: var(--volume-inner-light), var(--volume-outer-deep), var(--volume-glow);
}


/* 4 Elements Animations */

/* Water: Smooth Transitions */
a,
button,
.glass-panel,
.transition-all {
    transition-property: all;
    transition-duration: 0.6s;
    transition-timing-function: cubic-bezier(0.23, 1, 0.32, 1);
}

/* Ambient Drift with Soft Pastel Colors */
@keyframes ambientDrift {
    0% {
        transform: translate(0, 0) scale(1);
        opacity: 0.4;
    }

    33% {
        transform: translate(4%, 3%) scale(1.08);
        opacity: 0.6;
    }

    66% {
        transform: translate(-2%, 4%) scale(0.92);
        opacity: 0.5;
    }

    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.4;
    }
}

.ambient-drift-slow {
    animation: ambientDrift 30s ease-in-out infinite alternate;
}

/* Entry Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Input Fields - Volumetric & Deep */
.neo-input {
    background: linear-gradient(135deg, rgba(212,201,197,0.2) 0%, rgba(250,246,242,0.4) 100%);
    border-top: 1px solid rgba(0,0,0,0.05);
    border-left: 1px solid rgba(0,0,0,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.6);
    border-right: 1px solid rgba(255,255,255,0.6);
    color: var(--text-main);
    border-radius: 1.25rem;
    padding: 1.1rem 1.4rem;
    width: 100%;
    outline: none;
    box-shadow: inset 3px 3px 10px rgba(58, 34, 33, 0.08), inset -3px -3px 10px rgba(255, 255, 255, 0.8);
    transition: all 0.4s ease;
}

.neo-input::placeholder {
    color: var(--text-heading);
    opacity: 0.85;
}

.neo-input:focus {
    background: linear-gradient(135deg, rgba(212,201,197,0.3) 0%, rgba(250,246,242,0.6) 100%);
    border-color: var(--accent-glow);
    box-shadow: inset 3px 3px 10px rgba(58, 34, 33, 0.08), inset -3px -3px 10px rgba(255, 255, 255, 0.8), 0 0 12px rgba(252, 181, 115, 0.3);
}

/* Icons Glow */
svg,
.tab-icon {
    filter: drop-shadow(0 0 4px rgba(252, 181, 115, 0.2));
    transition: filter 0.3s ease;
}

.active svg,
.active .tab-icon {
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

/* Custom Scrollbar - Warm Muted */
::-webkit-scrollbar {
    width: 5px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(216, 129, 99, 0.2);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-warm);
}

/* Generic Button Soft Focus */
.btn-glass {
    position: relative;
    background: linear-gradient(135deg, rgba(173, 90, 78, 0.8) 0%, rgba(176, 133, 115, 0.8) 100%);
    border: 1px solid rgba(250, 246, 242, 0.5);
    box-shadow: 0 8px 25px rgba(173, 90, 78, 0.2), inset 2px 2px 5px rgba(250, 246, 242, 0.4);
    border-radius: 1.25rem;
    color: white;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
}

.btn-glass::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(252, 181, 115, 0.6) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    filter: blur(8px);
}

.btn-glass:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 30px rgba(173, 90, 78, 0.3), inset 2px 2px 5px rgba(250, 246, 242, 0.6), var(--volume-glow);
}

.btn-glass:hover::before {
    opacity: 1;
}

/* Float animation for landing logo */
@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
        box-shadow: 0 0 40px rgba(255, 191, 0, 0.15);
    }

    50% {
        transform: translateY(-12px);
        box-shadow: 0 20px 50px rgba(255, 191, 0, 0.25);
    }
}

/* Recording Pulse Animation */
@keyframes recordPulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(173, 90, 78, 0.4); }
    50% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(173, 90, 78, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(173, 90, 78, 0); }
}
.record-pulse {
    animation: recordPulse 1.5s infinite ease-in-out;
}

/* Pause background animations during interaction for better FPS */
body.is-interacting .ambient-drift-slow {
    animation-play-state: paused;
}

/* Modern CSS auto-resize for textarea */
textarea {
    /* field-sizing: content; */
    min-height: 48px;
    max-height: 200px;
}