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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --background: #ffffff;
    --surface: #f8fafc;
    --border: #e2e8f0;
    --error: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--surface);
    min-height: 100vh;
}

.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

/* Left Side - Branding */
.login-left {
    background: var(--gradient);
    color: white;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.login-left::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="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.login-branding {
    position: relative;
    z-index: 1;
}

.brand-logo {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.login-branding h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.login-branding p {
    font-size: 1.125rem;
    opacity: 0.9;
    line-height: 1.6;
}

.login-testimonial {
    position: relative;
    z-index: 1;
}

.login-testimonial blockquote {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    opacity: 0.95;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.author-name {
    font-weight: 600;
}

.author-title {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Right Side - Form */
.login-right {
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-form-container {
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
}

/* Form Styles */
.login-form {
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input.error {
    border-color: var(--error);
}

.password-input-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: var(--text-primary);
}

.toggle-icon {
    font-size: 1rem;
}

.error-message {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    min-height: 1.25rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 0.25rem;
    margin-right: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.checkbox-container input:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-container input:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
    position: relative;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-social {
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border);
    margin-bottom: 0.75rem;
}

.btn-social:hover {
    border-color: var(--primary-color);
    background: var(--surface);
}

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.btn.loading .button-text {
    opacity: 0;
}

.btn.loading .loading-spinner {
    display: block;
    position: absolute;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.form-divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border);
}

.form-divider span {
    background: white;
    padding: 0 1rem;
    position: relative;
}

.social-login {
    display: flex;
    flex-direction: column;
}

.general-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--error);
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    margin-top: 1rem;
    display: none;
}

.general-error.show {
    display: block;
}

.login-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.login-footer a:hover {
    color: var(--primary-dark);
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: var(--success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toast-icon {
    font-size: 1.25rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
    }

    .login-left {
        display: none;
    }

    .login-right {
        padding: 1rem;
    }

    .login-form-container {
        max-width: none;
    }

    .form-options {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .login-header h2 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 1rem;
    }

    .toast {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }
}