/* assets/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --primary: #4361ee;
    --secondary: #3f37c9;
    --accent: #4cc9f0;
    --dark: #0f172a;
    --light: #f8fafc;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

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

body {
    background: #0f172a;
    color: var(--light);
    overflow-x: hidden;
}

/* Background Animation */
.bg-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.3;
    animation: move 20s infinite alternate;
}

@keyframes move {
    from { transform: translate(-10%, -10%); }
    to { transform: translate(20%, 20%); }
}

/* Navbar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 10%;
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #fff, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    color: var(--light);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: 0.3s;
}

.nav-links a:hover {
    color: var(--accent);
}

.btn-login {
    background: var(--primary);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    color: white !important;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 10%;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 800;
}

.hero h1 span {
    background: linear-gradient(to right, var(--accent), #fff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    opacity: 0.8;
    margin-bottom: 3rem;
}

/* Features */
.features {
    padding: 5rem 10%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 24px;
    transition: 0.4s;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.feature-card i {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
    display: block;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    font-size: 1rem;
    opacity: 0.7;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 3rem; }
    .nav-links { display: none; }
}

/* Dashboard Layout (Admin & Guru) */
.sidebar { 
    width: 280px; 
    height: 100vh; 
    background: #0f172a; 
    color: white; 
    position: fixed; 
    left: 0; 
    top: 0; 
    padding: 2rem; 
    z-index: 1000;
}

.main-content { 
    margin-left: 280px; 
    padding: 2rem; 
    min-height: 100vh;
    background: #f1f5f9;
    color: #1e293b;
}

.sidebar .nav-link { 
    display: block; 
    padding: 1rem; 
    color: rgba(255,255,255,0.7); 
    text-decoration: none; 
    border-radius: 12px; 
    margin-bottom: 0.5rem; 
    transition: 0.3s; 
    font-weight: 500;
}

.sidebar .nav-link i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.sidebar .nav-link:hover, 
.sidebar .nav-link.active { 
    background: rgba(255,255,255,0.1); 
    color: white; 
}

.sidebar .nav-link.active {
    background: var(--primary) !important;
}

.card { 
    background: white; 
    padding: 2rem; 
    border-radius: 20px; 
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); 
    margin-bottom: 2rem; 
    color: #1e293b;
}