/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #1a202c;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    min-height: 100vh;
}

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

/* Header and Navigation */
header {
    background: #2c3e50;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: bold;
}

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

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

.nav-links a:hover {
    color: #3498db;
}

/* Main content */
main {
    min-height: 100vh;
}

/* Hero section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero-content p {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    margin-bottom: 2rem;
    opacity: 0.95;
    font-weight: 400;
}

/* Person selection section */
.person-selection {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.person-selection h3 {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 3rem;
    color: #2d3748;
    font-weight: 600;
}

.person-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 768px) {
    .person-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .person-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.person-tile {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    contain: layout style paint;
    transform: translateZ(0);
}

.person-tile:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    border-color: #667eea;
    background: rgba(255, 255, 255, 0.95);
}

.person-tile:active {
    transform: translateY(-4px) scale(1.01);
}

.person-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.person-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.photo-controls {
    margin-top: 0.5rem;
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.upload-btn, .delete-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 8px;
    padding: 0.3rem 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-btn:hover, .delete-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.05);
}

.person-initial {
    font-size: 2.2rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.person-tile h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.person-count {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
    min-width: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Statistics section */
.statistics {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.statistics h3 {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 3rem;
    color: #2d3748;
    font-weight: 600;
}

.statistics h3 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.stats-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 768px) {
    .stats-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.chart-container {
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.counts-display {
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.counts-display h4 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.count-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #ecf0f1;
}

.count-item:last-child {
    border-bottom: none;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: slideIn 0.3s ease;
}

.modal-content h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.modal-content p {
    margin-bottom: 2rem;
    color: #555;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Admin styles */
.admin-login {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.login-form {
    max-width: 450px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.9);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-form h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.form-group input, .form-control {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 12px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
    color: #2d3748;
}

.form-group input:focus, .form-control:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.admin-panel {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.admin-actions {
    text-align: right;
    margin-bottom: 2rem;
}

.admin-stats {
    margin-bottom: 3rem;
}

.admin-stats h3 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

.admin-counts {
    display: grid;
    gap: 1rem;
}

.admin-count-control {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.admin-count-control label {
    min-width: 100px;
    font-weight: bold;
}

.admin-count-control input {
    width: 100px;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 3px;
}

.admin-chart {
    margin-bottom: 3rem;
}

.admin-chart h3 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

.admin-actions-section {
    text-align: center;
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.admin-actions-section h3 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

.admin-settings {
    margin-bottom: 3rem;
    background: rgba(255, 255, 255, 0.9);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.admin-settings h3 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

.protected-person-setting {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 5px;
}

.protected-person-setting label {
    min-width: 150px;
    font-weight: bold;
}

.form-control {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 3px;
    min-width: 150px;
}

/* Button styles */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin: 0 0.5rem;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Footer */
footer {
    background: rgba(44, 62, 80, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #764ba2;
}

/* Notification styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 5px;
    color: white;
    font-weight: bold;
    z-index: 10000;
    max-width: 300px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.notification-success {
    background-color: #27ae60;
}

.notification-error {
    background-color: #e74c3c;
}

.notification-warning {
    background-color: #f39c12;
}

.notification-info {
    background-color: #3498db;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .person-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }
    
    .person-tile {
        padding: 1.5rem;
    }
    
    .person-avatar {
        width: 60px;
        height: 60px;
    }
    
    .person-initial {
        font-size: 1.5rem;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .modal-content {
        margin: 25% auto;
        width: 95%;
    }
    
    .admin-count-control {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .admin-count-control label {
        min-width: auto;
    }
}