/* Authentication Pages - Enterprise Grade Design */
/* Professional Corporate Login - Banking/SaaS Level */

:root {
    /* Corporate Color System */
    --navy-900: #0f172a;
    --navy-800: #1e293b;
    --navy-700: #334155;
    --navy-600: #475569;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;

    /* Neutral Palette */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    /* Semantic */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Shadows Enterprise */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--slate-50);
    min-height: 100vh;
    display: flex;
    color: var(--slate-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Centered Layout - Professional */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 100vh;
    padding: 24px;
}

/* Left Panel - Brand & Identity */
.auth-brand-panel {
    flex: 1;
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--blue-900) 100%);
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.auth-brand-panel::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.8; }
    50% { transform: scale(1.1) rotate(5deg); opacity: 1; }
}

.brand-content {
    position: relative;
    z-index: 2;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 48px;
}

.brand-logo-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-logo-text {
    font-size: 24px;
    font-weight: 700;
    color: white;
    letter-spacing: -0.5px;
}

.brand-tagline {
    max-width: 480px;
}

.brand-tagline h1 {
    font-size: 42px;
    font-weight: 800;
    color: white;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.brand-tagline p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    font-weight: 400;
}

.brand-features {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 20px;
    max-width: 480px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(8px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.feature-text h3 {
    font-size: 16px;
    font-weight: 600;
    color: white;
    margin-bottom: 4px;
    letter-spacing: -0.3px;
}

.feature-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

/* Form Panel - Centered */
.auth-form-panel {
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: var(--shadow-2xl);
    max-width: 480px;
    width: 100%;
}

.auth-card {
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
}

.auth-header {
    margin-bottom: 40px;
}

.auth-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--slate-900);
    margin-bottom: 12px;
    letter-spacing: -0.8px;
}

.auth-header p {
    font-size: 16px;
    color: var(--slate-600);
    line-height: 1.5;
}

/* Alert Messages */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid;
}

.alert-error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

/* Form Styles */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-700);
    letter-spacing: -0.2px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--slate-300);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--slate-900);
    background: white;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.form-group input::placeholder {
    color: var(--slate-400);
    font-weight: 400;
}

.form-group input:hover {
    border-color: var(--slate-400);
}

.form-group input:focus {
    outline: none;
    border-color: var(--blue-600);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    background: var(--slate-50);
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: -8px 0 8px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    color: var(--slate-700);
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    cursor: pointer;
    accent-color: var(--blue-600);
}

.link {
    color: var(--blue-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
    letter-spacing: -0.2px;
}

.link:hover {
    color: var(--blue-700);
    text-decoration: underline;
}

/* Button - Premium Design */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    letter-spacing: -0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-700) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.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 {
    background: linear-gradient(135deg, var(--blue-700) 0%, var(--blue-800) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

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

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-block {
    width: 100%;
}

/* Footer */
.auth-footer {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--slate-200);
    text-align: center;
}

.auth-footer p {
    font-size: 13px;
    color: var(--slate-500);
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .auth-container {
        padding: 16px;
    }

    .auth-form-panel {
        padding: 40px 32px;
    }

    .auth-header h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .auth-form-panel {
        padding: 32px 24px;
        border-radius: 16px;
    }

    .auth-header h2 {
        font-size: 24px;
    }

    .form-group input {
        padding: 12px 14px;
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Loading State */
.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary:disabled:hover {
    transform: none;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid var(--blue-600);
    outline-offset: 2px;
}