/* Global Variables & Theme */
:root {
    --primary: #dc2626;
    /* Red 600 */
    --secondary: #b91c1c;
    /* Red 700 */
    --accent: #ef4444;
    /* Red 500 */
    --dark: #ffffff;
    /* White bg for sections */
    --darker: #f9fafb;
    /* Gray 50 main bg */
    --light: #1f2937;
    /* Gray 800 - Text Color (Dark) */
    --gray: #4b5563;
    /* Gray 600 - Secondary Text */
    --glass: rgba(220, 38, 38, 0.05);
    --glass-border: rgba(220, 38, 38, 0.1);
    --font-main: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--darker);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.grid {
    display: grid;
}

.gap-4 {
    gap: 1rem;
}

.gap-8 {
    gap: 2rem;
}

.text-center {
    text-align: center;
}

/* Typography */
h1,
h2,
h3 {
    line-height: 1.2;
    font-weight: 700;
    color: #111827;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--gray);
    margin-bottom: 1rem;
}

/* Gradient Text */
.text-gradient {
    background: linear-gradient(to right, #dc2626, #ea580c);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    /* Std property as requested */
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
}

.btn-primary:hover {
    background: var(--secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

.btn-outline {
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo img {
    height: 45px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--gray);
    font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding-top: 100px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #fff1f2 0%, #ffffff 100%);
}

.hero-content {
    max-width: 600px;
    z-index: 2;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    z-index: 2;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    animation: float 6s ease-in-out infinite;
}

/* Background Gradients */
.glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: #fee2e2;
    filter: blur(100px);
    opacity: 0.5;
    border-radius: 50%;
    z-index: 1;
}

.glow-1 {
    top: -100px;
    left: -100px;
}

.glow-2 {
    bottom: -100px;
    right: -100px;
    background: #ffedd5;
}

/* Animation Keyframes */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--darker);
        padding: 20px;
        border-bottom: 1px solid var(--glass-border);
        gap: 15px;
    }

    .nav-links.active {
        display: flex;
        animation: slideDown 0.3s ease-out forwards;
    }

    .hamburger {
        display: block;
        cursor: pointer;
    }

    h1 {
        font-size: 2.5rem;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Course Cards */
.courses-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.course-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #fee2e2;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.course-image {
    height: 200px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.course-card:hover .course-image img {
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.9);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.course-content {
    padding: 25px;
}

.course-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: var(--gray);
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.course-content h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.course-footer {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #f3f4f6;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--darker);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    cursor: pointer;
    transition: 0.2s;
}

.course-card:hover .btn-icon {
    background: var(--primary);
    color: white;
}