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

:root {
    --primary: #6B5CE7;
    --primary-dark: #5648C7;
    --secondary: #00D4FF;
    --success: #00FF88;
    --text-primary: #1a1a1a;
    --text-secondary: #666;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-purple-light: #f5f3ff;
    --border: #e5e5e5;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Main Header with Aurora Effect */
.main-header {
    position: relative;
    padding: 4rem 0;
    text-align: center;
    overflow: hidden;
    background: #0A0E27;
}

.aurora-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.aurora-blob {
    position: absolute;
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    filter: blur(40px);
    mix-blend-mode: screen;
    opacity: 0.7;
}

.aurora-blob-1 {
    top: 0;
    left: 50%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #6B5CE7 0%, transparent 70%);
    animation: move1 20s ease-in-out infinite, hueRotate 15s linear infinite;
}

.aurora-blob-2 {
    top: 50%;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #00D4FF 0%, transparent 70%);
    animation: move2 25s ease-in-out infinite, hueRotate 20s linear infinite;
}

.aurora-blob-3 {
    bottom: 0;
    left: 0;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, #FF6B9D 0%, transparent 70%);
    animation: move3 18s ease-in-out infinite, hueRotate 12s linear infinite;
}

@keyframes move1 {
    0%, 100% {
        transform: translate(0, 0);
        border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    }
    25% {
        transform: translate(-100px, -50px);
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }
    50% {
        transform: translate(-50px, 100px);
        border-radius: 30% 70% 50% 50% / 40% 60% 40% 60%;
    }
    75% {
        transform: translate(100px, 50px);
        border-radius: 70% 30% 40% 60% / 50% 50% 70% 30%;
    }
}

@keyframes move2 {
    0%, 100% {
        transform: translate(0, 0);
        border-radius: 50% 50% 60% 40% / 50% 60% 40% 50%;
    }
    33% {
        transform: translate(-80px, 100px);
        border-radius: 40% 60% 50% 50% / 60% 40% 60% 40%;
    }
    66% {
        transform: translate(120px, -80px);
        border-radius: 60% 40% 70% 30% / 40% 70% 30% 60%;
    }
}

@keyframes move3 {
    0%, 100% {
        transform: translate(0, 0);
        border-radius: 60% 40% 40% 60% / 50% 60% 40% 50%;
    }
    30% {
        transform: translate(100px, -100px);
        border-radius: 30% 70% 60% 40% / 60% 30% 70% 40%;
    }
    60% {
        transform: translate(-100px, 80px);
        border-radius: 70% 30% 50% 50% / 40% 60% 50% 50%;
    }
}

@keyframes hueRotate {
    0% {
        filter: blur(40px) hue-rotate(0deg);
    }
    100% {
        filter: blur(40px) hue-rotate(360deg);
    }
}

.main-title {
    position: relative;
    z-index: 1;
    font-size: 2.8rem;
    font-weight: 900;
    color: white;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    line-height: 1.3;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
    border: none;
    font-family: 'Inter', sans-serif;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(107, 92, 231, 0.3);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: white;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-download {
    margin: 0 auto;
    display: flex;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section Title */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow);
}

.about-intro {
    margin-bottom: 3rem;
}

.lead-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: center;
}

.project-details h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 2.5rem 0 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--primary);
    display: inline-block;
}

.project-details h3:first-of-type {
    margin-top: 0;
}

.project-details p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.architecture-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.arch-feature {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.arch-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--primary);
}

.arch-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.tech-list {
    list-style: none;
    padding-left: 0;
    margin-top: 0.75rem;
}

.tech-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

.spec-item {
    background: var(--bg-purple-light);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.spec-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec-value {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.feature-icon-small {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--success);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.feature-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.tech-badge {
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.objectives-list {
    list-style: none;
    padding-left: 0;
    margin: 1.5rem 0;
}

.objectives-list li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.objectives-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

/* Detection Section */
.detection-section {
    padding: 4rem 0;
    background: var(--bg-white);
}

.recording-panel {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--border);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.panel-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-light);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: statusPulse 2s infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-badge.recording {
    background: rgba(255, 107, 107, 0.1);
}

.status-badge.recording .status-dot {
    background: #ff6b6b;
}

/* Waveform */
.waveform-container {
    position: relative;
    background: var(--bg-light);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    min-height: 200px;
}

#waveformCanvas {
    width: 100%;
    height: auto;
    display: block;
}

.waveform-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.record-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(107, 92, 231, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.record-button:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(107, 92, 231, 0.4);
}

.record-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.record-button.recording {
    background: #ff6b6b;
    animation: recordPulse 1.5s infinite;
}

@keyframes recordPulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0.7); }
    50% { box-shadow: 0 0 0 20px rgba(255, 107, 107, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 107, 107, 0); }
}

.timer-display {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    color: var(--primary);
    margin-bottom: 2rem;
}

/* Control Buttons */
.control-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.instructions {
    background: var(--bg-purple-light);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.instructions p {
    color: var(--text-secondary);
    margin: 0;
}

/* Results Section */
.results-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.results-card {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--border);
}

.result-message {
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.result-message.success {
    background: rgba(0, 255, 136, 0.1);
    color: #00aa5e;
    border: 2px solid #00FF88;
}

.result-message.warning {
    background: rgba(255, 193, 7, 0.1);
    color: #e6a700;
    border: 2px solid #FFC107;
}

.result-visualization {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.result-visualization img {
    width: 100%;
    border-radius: 8px;
}

.audio-output {
    background: var(--bg-purple-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    margin-bottom: 2rem;
}

.audio-output h4 {
    margin-bottom: 1rem;
    color: var(--primary);
    font-size: 1.2rem;
}

.audio-output audio {
    width: 100%;
    max-width: 600px;
    margin-bottom: 1rem;
}

.audio-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--bg-light);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .about-content {
        padding: 2rem;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .control-buttons {
        grid-template-columns: 1fr;
    }
    
    .recording-panel {
        padding: 2rem;
    }

    .results-card {
        padding: 2rem;
    }

    .aurora-blob-1, .aurora-blob-2, .aurora-blob-3 {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.4rem;
        letter-spacing: 0.5px;
    }

    .container {
        padding: 0 1rem;
    }
    
    .record-button {
        width: 60px;
        height: 60px;
    }

    .about-content {
        padding: 1.5rem;
    }

    .aurora-blob-1, .aurora-blob-2, .aurora-blob-3 {
        width: 200px;
        height: 200px;
    }
}