/* Modern Professional Login Page Design */

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
}

/* Login Page Container */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem;
    position: relative;
    overflow: hidden;
}

/* Animated background */
.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Login Card */
.login-card {
    background: white;
    border-radius: 1.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    max-width: 450px;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: slideIn 0.6s ease-out;
}

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

/* Login Header */
.login-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem 2rem 2rem;
    text-align: center;
    color: white;
    position: relative;
}

.login-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 30px;
    background: white;
    border-radius: 50% 50% 0 0 / 100% 100% 0 0;
}

.login-logo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    backdrop-filter: blur(10px);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.login-logo i {
    font-size: 2.5rem;
    color: white;
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: white;
}

.login-header p {
    font-size: 0.9375rem;
    opacity: 0.9;
    margin: 0;
}

/* Login Body */
.login-body {
    padding: 2.5rem 2rem 2rem;
}

/* Form Groups */
.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form .form-label {
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-form .form-control {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #f9fafb;
}

.login-form .form-control:focus {
    border-color: #667eea;
    background-color: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.login-form .input-group {
    position: relative;
}

.login-form .input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    font-size: 1.125rem;
    z-index: 2;
}

.login-form .input-group .form-control {
    padding-left: 3rem;
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 2;
    transition: color 0.3s ease;
}

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

/* Checkbox */
.login-form .form-check {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.login-form .form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid #d1d5db;
    border-radius: 0.375rem;
    margin-right: 0.75rem;
    cursor: pointer;
}

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

.login-form .form-check-label {
    font-size: 0.9375rem;
    color: #6b7280;
    cursor: pointer;
    user-select: none;
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

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

/* Forgot Password Link */
.forgot-password {
    text-align: center;
    margin-top: 1rem;
}

.forgot-password a {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Divider */
.login-divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    color: #9ca3af;
    font-size: 0.875rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: #e5e7eb;
}

.login-divider span {
    padding: 0 1rem;
}

/* Register Link */
.register-link {
    text-align: center;
    padding: 1.5rem 0 0;
    border-top: 1px solid #e5e7eb;
    margin-top: 1.5rem;
}

.register-link p {
    color: #6b7280;
    font-size: 0.9375rem;
    margin: 0;
}

.register-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Validation Errors */
.validation-summary-errors {
    background-color: #fee2e2;
    border-left: 4px solid #ef4444;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.validation-summary-errors ul {
    margin: 0;
    padding-left: 1.25rem;
    color: #991b1b;
}

.text-danger {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Social Login Buttons (if needed) */
.social-login {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-social {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    background: white;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-social:hover {
    border-color: #667eea;
    background-color: #f3f4f6;
}

.btn-social i {
    font-size: 1.25rem;
}

/* Success Message */
.alert-success {
    background-color: #d1fae5;
    border-left: 4px solid: #10b981;
    color: #065f46;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

/* Loading State */
.btn-login.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

/* Responsive Design */
@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    .login-page {
        padding: 0.75rem;
        align-items: flex-start;
        padding-top: 2rem;
    }
    
    .login-card {
        border-radius: 1rem;
        max-width: 100%;
    }
    
    .login-header {
        padding: 1.5rem 1.25rem 1.25rem;
    }
    
    .login-header h1 {
        font-size: 1.25rem;
    }
    
    .login-header p {
        font-size: 0.85rem;
    }
    
    .login-body {
        padding: 1.5rem 1.25rem 1.25rem;
    }
    
    .login-logo {
        width: 60px;
        height: 60px;
    }
    
    .login-logo i {
        font-size: 1.75rem;
    }
    
    .login-form .form-group {
        margin-bottom: 1rem;
    }
    
    .login-form .form-control {
        padding: 0.75rem 0.875rem;
        font-size: 1rem;
    }
    
    .login-form .input-group .form-control {
        padding-left: 2.75rem;
    }
    
    .login-form .input-icon {
        left: 0.875rem;
        font-size: 1rem;
    }
    
    .btn-login {
        padding: 0.875rem;
        font-size: 0.9375rem;
    }
    
    .register-link {
        padding-top: 1rem;
        margin-top: 1rem;
    }
    
    .alert {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 375px) {
    .login-header h1 {
        font-size: 1.125rem;
    }
    
    .login-logo {
        width: 50px;
        height: 50px;
    }
    
    .login-logo i {
        font-size: 1.5rem;
    }
}

/* Print Styles */
@media print {
    .login-page {
        display: none;
    }
}

/* Accessibility */
.login-form .form-control:focus,
.login-form .form-check-input:focus,
.btn-login:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .login-form .form-control {
        border-width: 2px;
    }
    
    .btn-login {
        border: 2px solid white;
    }
}

/* Reduce Motion */
@media (prefers-reduced-motion: reduce) {
    .login-card {
        animation: none;
    }
    
    .login-page::before {
        animation: none;
    }
    
    * {
        transition: none !important;
    }
}