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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 40px 20px;
    position: relative;
}

.back-btn {
    position: fixed;
    top: 30px;
    left: 30px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    z-index: 100;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(-5px);
}

.profile-container {
    max-width: 1000px;
    margin: 0 auto;
}

.header-section {
    text-align: center;
    margin-bottom: 60px;
    animation: fadeInDown 0.8s ease;
}

.header-section h1 {
    font-size: 3rem;
    color: white;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    margin-bottom: 15px;
    font-weight: 700;
}

.header-section p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.profile-card {
    background: white;
    border-radius: 25px;
    padding: 50px 30px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.profile-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.profile-avatar {
    width: 150px;
    height: 150px;
    margin: 0 auto 30px;
    border-radius: 50%;
    overflow: hidden;
    border: 5px solid #f0f0f0;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.profile-card:hover .profile-avatar {
    transform: scale(1.05);
    border-color: #667eea;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.default-avatar {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.profile-card h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 25px;
    font-weight: 600;
}

.select-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.select-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 25px;
    padding: 50px 40px;
    width: 90%;
    max-width: 450px;
    position: relative;
    animation: slideUp 0.4s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-modal:hover {
    background: #f0f0f0;
    color: #333;
    transform: rotate(90deg);
}

.modal-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid #f0f0f0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.modal-avatar img,
.modal-avatar .default-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-avatar .default-avatar {
    font-size: 3rem;
}

.modal-content h2 {
    text-align: center;
    font-size: 2rem;
    color: #333;
    margin-bottom: 35px;
    font-weight: 600;
}

.input-group {
    position: relative;
    margin-bottom: 25px;
}

.input-group i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 1.2rem;
}

.input-group input {
    width: 100%;
    padding: 18px 20px 18px 55px;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 18px;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.6);
}

.error-message {
    background: #fee2e2;
    color: #dc2626;
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    animation: shake 0.5s ease;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Responsive */
@media (max-width: 768px) {
    .back-btn {
        top: 20px;
        left: 20px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .header-section h1 {
        font-size: 2.2rem;
    }
    
    .header-section p {
        font-size: 1rem;
    }
    
    .profiles-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .profile-card {
        padding: 40px 25px;
    }
    
    .modal-content {
        padding: 40px 30px;
        margin: 20px;
    }
}