:root {
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-1: #3b82f6;
    --accent-2: #8b5cf6;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --danger: #ef4444;
    --success: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Animations */
.background-animations {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 20s infinite alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--accent-1), transparent 70%);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent-2), transparent 70%);
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 40%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.5), transparent 70%);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(5%, 10%) scale(1.1); }
    100% { transform: translate(-5%, -10%) scale(0.9); }
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
}

.logo i {
    color: var(--accent-1);
    font-size: 1.8rem;
}

nav {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav a:hover {
    color: var(--text-main);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    text-align: center;
    margin-top: 4rem;
    flex: 1;
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(to right, var(--accent-1), var(--accent-2), #00f2fe, var(--accent-1));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shineGlow 3s linear infinite, floatText 4s ease-in-out infinite;
    display: inline-block;
}

@keyframes shineGlow {
    0% { background-position: 0% center; filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5)); }
    50% { filter: drop-shadow(0 0 25px rgba(139, 92, 246, 0.8)); }
    100% { background-position: 200% center; filter: drop-shadow(0 0 10px rgba(59, 130, 246, 0.5)); }
}

@keyframes floatText {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0px); }
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Search Box */
.search-box {
    display: flex;
    max-width: 800px;
    margin: 0 auto;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    padding: 0.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.search-box:focus-within {
    transform: scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    border-color: var(--accent-1);
}

.input-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 1rem;
}

.link-icon {
    color: var(--text-muted);
    font-size: 1.2rem;
}

input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.1rem;
    outline: none;
}

input::placeholder {
    color: var(--text-muted);
}

button {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 40px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.4);
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading & Error states */
.hidden {
    display: none !important;
}

#loading {
    margin-top: 2rem;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.error {
    margin-top: 2rem;
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    padding: 1rem;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Result Section */
#result-section {
    margin-top: 3rem;
    animation: slideUp 0.5s ease forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.video-card {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.video-thumbnail {
    position: relative;
    width: 300px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.video-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.platform-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    color: white;
    padding: 0.5rem;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.video-details {
    flex: 1;
    text-align: left;
}

.video-details h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.duration {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dl-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-main);
    transition: all 0.2s ease;
}

.dl-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-1);
    transform: translateX(5px);
}

.dl-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dl-res {
    font-weight: 800;
    color: var(--accent-1);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
}

.dl-size {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.dl-action {
    background: var(--success);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    padding-top: 3rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .search-box { flex-direction: column; border-radius: 20px; padding: 1rem; gap: 1rem; }
    .input-wrapper { padding: 0.5rem; }
    button { width: 100%; justify-content: center; }
    .video-card { flex-direction: column; }
    .video-thumbnail { width: 100%; }
    nav { display: none; }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    pointer-events: none;
}

.toast {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--accent-1);
    color: var(--text-main);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    transform: translateX(120%);
    opacity: 0;
    animation: slideInRight 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.toast.fade-out {
    animation: fadeOutRight 0.5s ease forwards;
}

.toast i {
    font-size: 1.5rem;
    color: var(--accent-1);
}

.toast-content {
    display: flex;
    flex-direction: column;
}

.toast-title {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.toast-message {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 400;
}

@keyframes slideInRight {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOutRight {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(120%); opacity: 0; }
}