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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s infinite ease-in-out;
}

.bg-circle:nth-child(1) {
    width: 300px;
    height: 300px;
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.bg-circle:nth-child(2) {
    width: 200px;
    height: 200px;
    top: 50%;
    right: -100px;
    animation-delay: 3s;
}

.bg-circle:nth-child(3) {
    width: 150px;
    height: 150px;
    bottom: -75px;
    left: 30%;
    animation-delay: 6s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, 50px) scale(1.1);
    }
}

/* Register Container */
.register-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 500px;
}

.register-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 50px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.6s ease;
}

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

.register-header {
    text-align: center;
    margin-bottom: 40px;
}

.register-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    animation: pulse 2s infinite;
}

.register-logo i {
    font-size: 40px;
    color: white;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.register-header h1 {
    font-size: 32px;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 10px;
}

.register-header p {
    color: #6b7280;
    font-size: 15px;
}

.register-header p a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.register-header p a:hover {
    text-decoration: underline;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #374151;
    font-size: 14px;
}

.input-wrapper {
    position: relative;
}

.input-wrapper > i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    font-size: 18px;
    transition: all 0.3s;
    z-index: 1;
}

.form-control {
    width: 100%;
    padding: 16px 20px 16px 55px;
    border: 2px solid #e5e7eb;
    border-radius: 15px;
    font-size: 15px;
    transition: all 0.3s;
    font-family: inherit;
}

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

.form-control:focus ~ i {
    color: #667eea;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.password-toggle {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #9ca3af;
    font-size: 18px;
    transition: all 0.3s;
    z-index: 2;
}

.password-toggle:hover {
    color: #667eea;
}

.password-strength {
    height: 4px;
    background: #e5e7eb;
    border-radius: 10px;
    margin-top: 8px;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    transition: all 0.3s;
}

.strength-weak {
    width: 33%;
    background: #ef4444;
}

.strength-medium {
    width: 66%;
    background: #f59e0b;
}

.strength-strong {
    width: 100%;
    background: #10b981;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 25px 0;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.checkbox-group label {
    margin: 0;
    font-size: 13px;
    color: #6b7280;
    cursor: pointer;
}

.checkbox-group a {
    color: #667eea;
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.btn-register {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-register span {
    position: relative;
    z-index: 1;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn-register:active {
    transform: translateY(0);
}

.btn-register::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-register:hover::before {
    width: 300px;
    height: 300px;
}

.alert {
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 25px;
    font-size: 14px;
    animation: slideDown 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid #fecaca;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid #a7f3d0;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 25px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 2px solid #e5e7eb;
}

.divider span {
    padding: 0 15px;
    color: #9ca3af;
    font-size: 13px;
    font-weight: 600;
}

.social-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.btn-social {
    padding: 14px;
    border: 2px solid #e5e7eb;
    background: white;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-social:hover {
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-social i {
    font-size: 18px;
}

.btn-google {
    color: #ea4335;
}

.btn-facebook {
    color: #1877f2;
}

.back-home {
    text-align: center;
    margin-top: 25px;
}

.back-home a {
    color: #6b7280;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.back-home a:hover {
    color: #667eea;
}

.back-home i {
    margin-right: 5px;
}

@media (max-width: 576px) {
    .register-card {
        padding: 40px 25px;
    }
    
    .register-header h1 {
        font-size: 28px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .social-buttons {
        grid-template-columns: 1fr;
    }
}