/* KaraokeAI - Main Stylesheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

body {
    font-family: 'Inter', sans-serif;
}

/* Gradient utilities */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Glass morphism */
.glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Progress bar */
.progress-bar {
    position: relative;
    overflow: hidden;
    transition: width 0.3s ease;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transform: translateX(-100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Animations */
@keyframes pulse-slow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-pulse-slow {
    animation: pulse-slow 3s ease-in-out infinite;
}

@keyframes pulse-once {
    0%, 100% { opacity: 1; }
    25% { opacity: 0.5; }
    50% { opacity: 1; }
    75% { opacity: 0.5; }
}

.animate-pulse-once {
    animation: pulse-once 2s ease-in-out;
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-animate {
    background-size: 200% 200%;
    animation: gradient-shift 3s ease infinite;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(103, 126, 234, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(103, 126, 234, 0.7);
}

/* Toggle switch */
.toggle-checkbox {
    transition: all 0.3s ease;
}

.toggle-checkbox:checked {
    right: 0;
    border-color: #667eea;
    transform: translateX(24px);
}

.toggle-checkbox:checked + .toggle-label {
    background-color: #667eea;
}

/* Color picker */
input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 50px;
    height: 50px;
    cursor: pointer;
    border-radius: 8px;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 8px;
}

/* Segment editor */
.segment-item {
    position: relative;
}

.segment-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    transition: background 0.3s ease;
}

.segment-item:hover::before {
    background: linear-gradient(to bottom, #667eea, #764ba2);
}

/* Loading spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: #667eea;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Glow effects */
.glow {
    box-shadow: 0 0 20px rgba(103, 126, 234, 0.5);
}

.glow:hover {
    box-shadow: 0 0 30px rgba(103, 126, 234, 0.7);
}

/* Video player */
video::-webkit-media-controls-panel {
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .gradient-text {
        font-size: 2.5rem;
    }

    .glass {
        padding: 1.5rem;
    }

    .segment-item textarea {
        font-size: 0.875rem;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
}