:root {
    --bg-color: #0d0e12;
    --panel-bg: rgba(25, 27, 34, 0.7);
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 40%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
}

.app-container {
    width: 90%;
    max-width: 1000px;
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

header {
    margin-bottom: 40px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-area {
    text-align: left;
}

.nav-home {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.3);
    transition: all 0.2s;
}

.nav-home:hover {
    background: var(--primary-color);
    color: white;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    background: linear-gradient(to right, #6366f1, #a855f7, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.upload-section {
    border: 2px dashed var(--glass-border);
    border-radius: 16px;
    padding: 60px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-section:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.upload-content p {
    margin-bottom: 24px;
    color: var(--text-muted);
}

.hidden {
    display: none;
}

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:active {
    transform: scale(0.95);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

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

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border-radius: 50%;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.2);
}

#waveform-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 30px;
    border: 1px solid var(--glass-border);
    position: relative;
}

.controls-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.playback-controls, .edit-controls {
    display: flex;
    gap: 16px;
}

.info-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--glass-border);
}

.info-item .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-right: 8px;
}

.info-item span:not(.label) {
    font-weight: 500;
}

/* Icons (Simplistic representation) */
.icon-play::before { content: "▶"; }
.icon-pause::before { content: "⏸"; }
.icon-stop::before { content: "⏹"; }

footer {
    margin-top: 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Regions styling for Wavesurfer */
.wavesurfer-region {
    background: rgba(99, 102, 241, 0.2) !important;
}

.wavesurfer-region-handle {
    width: 2px !important;
    background: var(--primary-color) !important;
}