/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Header Styles */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-brand i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffd700;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(27, 26, 26, 0.5), rgba(0,0,0,0.5)), 
                url('https://t3.ftcdn.net/jpg/06/58/67/48/360_F_658674860_7vebpSTDe5IEtZGWzxnK0yJEtn6B1Loh.jpg');
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 70px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* Categories Section */
.categories {
    padding: 5rem 0;
    background: white;
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    border-color: #667eea;
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.category-card p {
    color: #666;
    margin-bottom: 1rem;
}

 .exercise-count {
     background: #f0f0f0;
     color: #666;
     padding: 0.5rem 1rem;
     border-radius: 20px;
     font-size: 0.9rem;
     font-weight: 500;
 }

 /* Workout Days Section */
 .workout-days {
     padding: 5rem 0;
     background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
     color: white;
 }

 .workout-days h2 {
     text-align: center;
     font-size: 2.5rem;
     margin-bottom: 3rem;
     color: white;
 }

 .workout-days-grid {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
     gap: 1.5rem;
 }

 .workout-day-card {
     background: rgba(255, 255, 255, 0.1);
     backdrop-filter: blur(10px);
     padding: 2rem;
     border-radius: 15px;
     text-align: center;
     transition: transform 0.3s ease, box-shadow 0.3s ease;
     cursor: pointer;
     border: 2px solid rgba(255, 255, 255, 0.2);
     position: relative;
     overflow: hidden;
 }

 .workout-day-card:hover {
     transform: translateY(-10px);
     box-shadow: 0 15px 30px rgba(0,0,0,0.3);
     border-color: rgba(255, 255, 255, 0.5);
 }

 .workout-day-card.rest-day {
     background: rgba(255, 255, 255, 0.15);
     border-color: rgba(255, 215, 0, 0.5);
 }

 .workout-day-card.rest-day:hover {
     border-color: rgba(255, 215, 0, 0.8);
 }

 .day-number {
     position: absolute;
     top: 1rem;
     left: 1rem;
     background: rgba(255, 255, 255, 0.2);
     color: white;
     padding: 0.5rem 1rem;
     border-radius: 20px;
     font-weight: bold;
     font-size: 0.9rem;
 }

 .workout-icon {
     width: 70px;
     height: 70px;
     background: rgba(255, 255, 255, 0.2);
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     margin: 0 auto 1rem;
     margin-top: 2rem;
 }

 .workout-icon i {
     font-size: 1.8rem;
     color: white;
 }

 .workout-day-card h3 {
     font-size: 1.4rem;
     margin-bottom: 0.5rem;
     color: white;
 }

 .workout-day-card p {
     color: rgba(255, 255, 255, 0.8);
     margin-bottom: 1rem;
     font-size: 0.9rem;
 }

 .muscle-groups {
     display: flex;
     gap: 0.5rem;
     margin-bottom: 1rem;
     flex-wrap: wrap;
     justify-content: center;
 }

 .muscle-tag {
     background: rgba(255, 255, 255, 0.2);
     color: white;
     padding: 0.3rem 0.8rem;
     border-radius: 15px;
     font-size: 0.8rem;
     font-weight: 500;
 }

 .workout-type {
     background: rgba(255, 255, 255, 0.3);
     color: white;
     padding: 0.5rem 1rem;
     border-radius: 20px;
     font-size: 0.9rem;
     font-weight: 500;
     display: inline-block;
 }

/* Exercises Section */
.exercises {
    padding: 5rem 0;
    background: #f8f9fa;
}

.exercises h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: white;
    border: 2px solid #ddd;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn.active,
.filter-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: #667eea;
}

.exercises-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.exercise-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.exercise-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.exercise-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.exercise-content {
    padding: 1.5rem;
}

.exercise-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.exercise-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.exercise-category,
.exercise-difficulty {
    background: #f0f0f0;
    color: #666;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

.exercise-description {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 2% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    right: 20px;
    top: 15px;
    z-index: 2001;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

.exercise-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.exercise-media {
    position: relative;
}

.media-container {
    position: relative;
    height: 400px;
    overflow: hidden;
    border-radius: 15px 0 0 0;
}

#exerciseImage,
#exerciseVideo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-toggle {
    position: absolute;
    bottom: 20px;
    left: 20px;
    display: flex;
    gap: 0.5rem;
}

.media-btn {
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.media-btn.active,
.media-btn:hover {
    background: rgba(102, 126, 234, 0.9);
}

.exercise-info {
    padding: 2rem;
}

.exercise-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.exercise-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.exercise-meta span {
    background: #f0f0f0;
    color: #666;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.exercise-description,
.exercise-muscles,
.exercise-tips {
    margin-bottom: 2rem;
}

.exercise-description h3,
.exercise-muscles h3,
.exercise-tips h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.exercise-description p,
.exercise-muscles p,
.exercise-tips p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ffd700;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #667eea;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .exercises-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .exercise-details {
        grid-template-columns: 1fr;
    }
    
    .media-container {
        border-radius: 15px 15px 0 0;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .categories h2,
    .exercises h2 {
        font-size: 2rem;
    }
    
         .category-card,
     .exercise-card {
         margin: 0 1rem;
     }
     
     .workout-days-grid {
         grid-template-columns: 1fr;
     }
     
     .workout-day-card {
         margin: 0 1rem;
     }
 }