/* ========== Variables & Themes ========== */
:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --bg: #f7fafc;
    --card-bg: #ffffff;
    --text: #2d3748;
    --text-light: #718096;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --star-color: #fbbf24;
    --success: #48bb78;
    --danger: #f56565;
}

[data-theme="ocean"] {
    --primary: #0ea5e9;
    --secondary: #06b6d4;
}

[data-theme="sunset"] {
    --primary: #f97316;
    --secondary: #fb923c;
}

[data-theme="forest"] {
    --primary: #10b981;
    --secondary: #34d399;
}

[data-theme="royal"] {
    --primary: #8b5cf6;
    --secondary: #a78bfa;
}

[data-theme="neon"] {
    --primary: #ec4899;
    --secondary: #f472b6;
}

/* ========== Reset & Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: all 0.3s ease;
}

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

/* ========== Header ========== */
.header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 20px 0;
    box-shadow: 0 4px 20px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.header-controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.theme-btn, .view-toggle, .admin-link, .back-btn {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.theme-btn:hover, .view-toggle:hover, .admin-link:hover, .back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* ========== Theme Modal ========== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close {
    float: left;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-light);
}

.close:hover {
    color: var(--danger);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.modal-content h3 {
    margin: 20px 0 10px;
    font-size: 1.1rem;
    color: var(--text);
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.preset-btn {
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--card-bg);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.preset-btn:hover {
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: 0 5px 15px var(--shadow);
}

.color-picker-group {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.color-picker-group label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.9rem;
}

.color-picker-group input[type="color"] {
    width: 60px;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.apply-custom-btn {
    padding: 10px 20px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.apply-custom-btn:hover {
    background: var(--secondary);
    transform: translateY(-2px);
}

.layout-selector select {
    width: 100%;
    padding: 10px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    margin-top: 10px;
}

/* ========== Search & Filter ========== */
.search-section {
    padding: 30px 0;
}

#searchInput {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.filters select {
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filters select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========== Interns Grid ========== */
.interns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    padding: 20px 0;
}

.intern-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 15px var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.intern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.intern-card:hover::before {
    transform: scaleX(1);
}

.intern-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px var(--shadow);
}

.intern-card.modern {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.intern-card.minimal {
    box-shadow: none;
    border: 1px solid var(--border);
}

.intern-card.elegant {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.card-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary);
}

.card-info h3 {
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 5px;
}

.card-specialty {
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.card-body {
    margin: 15px 0;
}

.card-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 8px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.card-rating {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
}

.stars {
    display: flex;
    gap: 3px;
}

.star {
    font-size: 1.2rem;
    color: #d1d5db;
    transition: all 0.2s ease;
}

.star.filled {
    color: var(--star-color);
    animation: starPop 0.3s ease;
}

@keyframes starPop {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.rating-count {
    font-size: 0.85rem;
    color: var(--text-light);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

.view-profile-btn {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.view-profile-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.share-btn {
    padding: 8px 12px;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.share-btn:hover {
    background: rgba(102, 126, 234, 0.2);
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ========== Profile Page ========== */
.profile-container {
    padding: 30px 0;
}

.profile-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 30px;
    display: flex;
    gap: 30px;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: 0 10px 30px var(--shadow);
}

.profile-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid white;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.profile-info {
    flex: 1;
    min-width: 250px;
}

.profile-info h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.profile-specialty {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 15px;
}

.profile-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin: 15px 0;
}

.profile-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
}

.profile-rating {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    margin-top: 15px;
}

.rating-section, .user-rating-section, .comments-section {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px var(--shadow);
}

.rating-section h2, .user-rating-section h