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

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Main container */
.auth-container {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    position: relative;
}

/* Background animation */
.auth-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
    animation: floating 20s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(1deg); }
    66% { transform: translateY(5px) rotate(-1deg); }
}

/* Wrapper */
.auth-wrapper {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Main card container */
.auth-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    animation: slideInUp 0.6s ease-out;
    width: 100%;
    max-width: 650px;
    margin: 0 auto;
}

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

/* Card header */
.card-header {
    background: transparent !important;
    border: none !important;
    padding: 2rem 2.5rem 1rem 2.5rem !important;
    text-align: center;
}

/* Card body */
.card-body {
    padding: 1rem 2.5rem 2.5rem 2.5rem !important;
}

/* Logo container */
.logo-container {
    width: 70px;
    height: 70px;
    margin: 0 auto 1rem auto;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.logo-container:hover {
    transform: scale(1.05);
}

.logo-container i {
    font-size: 1.75rem;
    color: white;
    z-index: 2;
    position: relative;
}

/* Titles */
.auth-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 0.5rem;
}

.auth-card p {
    color: #6c757d;
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Account type selection */
.btn-check + .btn-outline-primary {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 1.25rem 1rem;
    transition: all 0.3s ease;
    min-height: 100px;
    background: white;
    color: #333;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-check:checked + .btn-outline-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
    color: white;
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-check + .btn-outline-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.btn-check + .btn-outline-primary i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.btn-check + .btn-outline-primary .fw-medium {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.btn-check + .btn-outline-primary small {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Form groups */
.form-group {
    margin-bottom: 1.25rem;
}

.row.g-3 > .col-12,
.row.g-3 > .col-md-6 {
    margin-bottom: 1rem;
}

/* Form labels */
.form-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.75rem;
    display: block;
    font-size: 0.9rem;
}

.form-label i {
    color: #6c757d;
    font-size: 0.85rem;
}

/* Form controls */
.form-control, .form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
    outline: none;
    min-height: 48px;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
    background: white;
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: #adb5bd;
    font-size: 0.9rem;
}

.form-control-lg {
    padding: 1rem 1.25rem;
    font-size: 1rem;
    min-height: 52px;
}

/* Input groups */
.input-group {
    display: flex;
    align-items: stretch;
}

.input-group .form-control {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
    flex: 1;
}

.input-group .btn {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border: 2px solid #e9ecef;
    border-left: none;
    background: #f8f9fa;
    color: #6c757d;
    padding: 0 0.875rem;
    transition: all 0.3s ease;
    min-height: auto;
}

.input-group .btn:hover {
    background: #e9ecef;
    color: #667eea;
    border-color: #667eea;
}

/* Password strength */
.password-strength {
    margin-top: 0.5rem;
}

.password-strength .progress {
    height: 6px;
    border-radius: 3px;
    background-color: #e9ecef;
}

.password-strength .progress-bar {
    transition: width 0.3s ease, background-color 0.3s ease;
    border-radius: 3px;
}

.strength-weak { background-color: #dc3545 !important; }
.strength-medium { background-color: #ffc107 !important; }
.strength-strong { background-color: #28a745 !important; }

.password-match-success { color: #28a745 !important; }
.password-match-error { color: #dc3545 !important; }

/* Buttons */
.btn {
    font-weight: 600;
    border-radius: 10px;
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    outline: none;
    position: relative;
    overflow: hidden;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
    min-height: 52px;
}

/* Form validation */
.form-control.is-invalid {
    border-color: #dc3545;
    animation: shake 0.5s ease-in-out;
}

.form-control.is-valid {
    border-color: #28a745;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.8rem;
    margin-top: 0.5rem;
    display: block;
}

/* Form check */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0;
}

.form-check-input {
    width: 1.1rem;
    height: 1.1rem;
    border: 2px solid #e9ecef;
    border-radius: 4px;
    background: white;
    margin: 0.2rem 0 0 0;
    flex-shrink: 0;
}

.form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.form-check-label {
    font-size: 0.85rem;
    color: #6c757d;
    margin: 0;
    cursor: pointer;
    line-height: 1.4;
}

/* Links */
a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Benefits section */
.benefits-section {
    margin-top: 2rem;
    animation: slideInUp 0.8s ease-out;
}

.benefit-item {
    transition: transform 0.3s ease;
    text-align: center;
    padding: 1rem;
}

.benefit-item:hover {
    transform: translateY(-5px);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem auto;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.benefit-item:hover .benefit-icon {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.benefit-item h6 {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.benefit-item p {
    color: #6c757d;
    font-size: 0.8rem;
    margin: 0;
}

/* Responsive adjustments */
@media (min-width: 576px) {
    .auth-card {
        max-width: 700px;
    }
    
    .card-header {
        padding: 2.5rem 3rem 1.5rem 3rem !important;
    }
    
    .card-body {
        padding: 1.5rem 3rem 2.5rem 3rem !important;
    }
    
    .btn-check + .btn-outline-primary {
        min-height: 110px;
        padding: 1.5rem 1rem;
    }
}

@media (min-width: 768px) {
    .auth-container {
        padding: 3rem 2rem;
    }
    
    .auth-card {
        max-width: 750px;
    }
    
    .card-header {
        padding: 3rem 3.5rem 2rem 3.5rem !important;
    }
    
    .card-body {
        padding: 2rem 3.5rem 3rem 3.5rem !important;
    }
    
    .form-control, .form-select {
        padding: 1rem 1.25rem;
        font-size: 1rem;
        min-height: 52px;
    }
    
    .form-control-lg {
        padding: 1.125rem 1.5rem;
        font-size: 1.05rem;
        min-height: 56px;
    }
    
    .btn {
        padding: 1rem 2rem;
        font-size: 1rem;
        min-height: 52px;
    }
    
    .btn-lg {
        padding: 1.125rem 2.25rem;
        font-size: 1.05rem;
        min-height: 56px;
    }
    
    .btn-check + .btn-outline-primary {
        min-height: 120px;
        padding: 1.75rem 1.25rem;
    }
    
    .btn-check + .btn-outline-primary i {
        font-size: 1.75rem;
    }
    
    .logo-container {
        width: 80px;
        height: 80px;
    }
    
    .logo-container i {
        font-size: 2rem;
    }
    
    .auth-card h2 {
        font-size: 1.75rem;
    }
    
    .benefits-section {
        margin-top: 3rem;
    }
    
    .benefit-icon {
        width: 70px;
        height: 70px;
        font-size: 1.75rem;
    }
}

@media (min-width: 992px) {
    .auth-card {
        max-width: 800px;
    }
    
    .card-header {
        padding: 3.5rem 4rem 2rem 4rem !important;
    }
    
    .card-body {
        padding: 2rem 4rem 3.5rem 4rem !important;
    }
}

/* Mobile adjustments */
@media (max-width: 575.98px) {
    .auth-container {
        padding: 1rem;
    }
    
    .auth-card {
        margin: 0.5rem 0;
        border-radius: 16px;
        max-width: none;
    }
    
    .card-header {
        padding: 1.5rem 1.25rem 1rem 1.25rem !important;
    }
    
    .card-body {
        padding: 1rem 1.25rem 2rem 1.25rem !important;
    }
    
    .logo-container {
        width: 60px;
        height: 60px;
    }
    
    .logo-container i {
        font-size: 1.5rem;
    }
    
    .auth-card h2 {
        font-size: 1.35rem;
    }
    
    .form-control, .form-select {
        padding: 0.75rem 0.875rem;
        font-size: 0.9rem;
        min-height: 44px;
    }
    
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        min-height: 44px;
    }
    
    .btn-check + .btn-outline-primary {
        min-height: 85px;
        padding: 1rem 0.75rem;
        font-size: 0.85rem;
    }
    
    .btn-check + .btn-outline-primary i {
        font-size: 1.25rem;
    }
    
    .benefits-section {
        margin-top: 1.5rem;
    }
    
    .benefit-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .row.g-3 {
        --bs-gutter-x: 0.75rem;
    }
}

/* Loading states */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    top: 50%;
    left: 50%;
    margin-left: -9px;
    margin-top: -9px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Form loading state */
.form-loading {
    pointer-events: none;
    opacity: 0.7;
}

/* Utility classes */
.d-grid { display: grid; }
.text-center { text-align: center; }
.text-muted { color: #6c757d !important; }
.fw-bold { font-weight: 700 !important; }
.fw-medium { font-weight: 500 !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }

.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }

.me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; }

.gap-3 { gap: 1rem !important; }
.flex-wrap { flex-wrap: wrap !important; }