/**
 * Music Recognition App Styles
 * Apple-style clean, minimal CSS
 */

/* ============================================================================
   Base & Reset
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================================
   Body & Background
   ============================================================================ */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', sans-serif;
    background: linear-gradient(to bottom, #000000 0%, #1c1c1e 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #fff;
    overflow: hidden;
    position: relative;
}

/* Decorative background orbs */
body::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    border-radius: 50%;
    filter: blur(80px);
}

body::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    border-radius: 50%;
    filter: blur(80px);
}

/* ============================================================================
   Main Container (Glassmorphism)
   ============================================================================ */

.container {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: rgba(28, 28, 30, 0.6);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    padding: 40px 32px;
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.4),
        0 1px 1px rgba(255, 255, 255, 0.05) inset;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 32px;
    min-height: 500px;
}

/* ============================================================================
   Song Section
   ============================================================================ */

.song-section {
    flex: 0 0 auto;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 236px;
    /* Fixed: 160px cover + 16px margin + ~60px text */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.song-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.cover-art {
    width: 160px;
    height: 160px;
    border-radius: 12px;
    object-fit: cover;
    margin-bottom: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.song-info {
    margin-top: 8px;
}

.song-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
    line-height: 1.3;
    color: #ffffff;
}

.song-artist {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 400;
    letter-spacing: -0.2px;
}

/* ============================================================================
   Button Section
   ============================================================================ */

.button-section {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.button-container {
    position: relative;
    width: 140px;
    height: 140px;
}

/* Audio visualization ring */
.audio-ring {
    position: absolute;
    top: -30px;
    left: -30px;
    right: -30px;
    bottom: -30px;
    border-radius: 50%;
    background: radial-gradient(circle, transparent 30%, rgba(139, 92, 246, 0.6) 60%, rgba(6, 182, 212, 0.4) 80%);
    filter: blur(20px);
    opacity: 0;
    transform: scale(1);
    will-change: transform, opacity;
}

.button-container.recording .audio-ring {
    opacity: 1;
}

/* Main button */
.main-button {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 12px 32px rgba(139, 92, 246, 0.35),
        0 4px 8px rgba(0, 0, 0, 0.2);
}

.main-button:hover {
    transform: scale(1.05);
    box-shadow:
        0 16px 40px rgba(139, 92, 246, 0.45),
        0 6px 12px rgba(0, 0, 0, 0.25);
}

.main-button:active {
    transform: scale(0.98);
}

/* Recording state */
.button-container.recording .main-button {
    background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
    box-shadow:
        0 12px 32px rgba(239, 68, 68, 0.5),
        0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Pending state */
.button-container.pending .main-button {
    background: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    box-shadow:
        0 8px 24px rgba(107, 114, 128, 0.3),
        0 4px 8px rgba(0, 0, 0, 0.2);
    cursor: not-allowed;
    pointer-events: none;
}

.button-container.pending .button-icon {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

/* ============================================================================
   Icons
   ============================================================================ */

.button-icon {
    width: 48px;
    height: 48px;
    color: white;
    transition: all 0.3s ease;
}

.button-container.recording .button-icon {
    transform: scale(0.9);
}

/* ============================================================================
   Status Text
   ============================================================================ */

.status-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.45);
    font-weight: 400;
    letter-spacing: -0.2px;
    transition: all 0.3s ease;
}

.button-container.recording+.status-text {
    color: rgba(239, 68, 68, 0.9);
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 640px) {
    .container {
        padding: 32px 24px;
        min-height: 480px;
    }

    .button-container {
        width: 120px;
        height: 120px;
    }

    .button-icon {
        width: 42px;
        height: 42px;
    }

    .song-title {
        font-size: 20px;
    }

    .song-artist {
        font-size: 15px;
    }

    .cover-art {
        width: 140px;
        height: 140px;
    }
}