/* ============================================
   AUTHENTICATION PAGES - LOGIN & REGISTER
   ============================================ */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --dark-card: #1e293b;
    --dark-hover: #334155;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   CONTAINER LAYOUT
   ============================================ */

.auth-container {
    display: grid;
    grid-template-columns: 40% 60%;
    min-height: 100vh;
}

@media (max-width: 968px) {
    .auth-container {
        grid-template-columns: 1fr;
    }

    .auth-left {
        display: none;
    }
}

/* ============================================
   LEFT PANEL - BRANDING
   ============================================ */

.auth-left {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 4rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.auth-left::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: float 20s linear infinite;
}

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

.auth-branding {
    position: relative;
    z-index: 1;
    margin-bottom: 3rem;
}

.auth-branding h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-branding h1 i {
    font-size: 2.5rem;
}

.auth-logo {
    height: 120px;
    width: auto;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.auth-branding p {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.6;
}

.auth-features {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
    color: white;
    background: rgba(255,255,255,0.1);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.feature-item i {
    font-size: 1.5rem;
    color: #10b981;
}

/* ============================================
   RIGHT PANEL - FORM
   ============================================ */

.auth-right {
    background: var(--dark);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
}

.auth-card {
    background: var(--dark-card);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2rem;
    width: 100%;
    max-width: 650px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    margin: auto;
}

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

.auth-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.alert i {
    font-size: 1.25rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.alert-error,
.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* ============================================
   FORM STYLES
   ============================================ */

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--primary);
    font-size: 0.9rem;
}

.form-group input {
    padding: 0.875rem 1rem;
    background: var(--dark);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

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

.form-group input::placeholder {
    color: var(--text-muted);
}

/* ============================================
   PASSWORD STRENGTH INDICATOR
   ============================================ */

.password-strength {
    height: 4px;
    border-radius: 2px;
    margin-top: 0.5rem;
    transition: all 0.3s ease;
}

.password-strength.weak {
    width: 25%;
    background: var(--danger);
}

.password-strength.medium {
    width: 50%;
    background: var(--warning);
}

.password-strength.good {
    width: 75%;
    background: #3b82f6;
}

.password-strength.strong {
    width: 100%;
    background: var(--success);
}

/* ============================================
   FORM OPTIONS
   ============================================ */

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-label span a {
    color: var(--primary);
    text-decoration: none;
}

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

.forgot-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

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

.btn-full {
    width: 100%;
}

/* ============================================
   PLAN SELECTOR (REGISTER PAGE)
   ============================================ */

.plan-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .plan-selector {
        grid-template-columns: 1fr;
    }
}

.plan-option {
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.plan-option:hover {
    transform: translateY(-5px);
}

.plan-option.selected label {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.plan-option input[type="radio"] {
    display: none;
}

.plan-option label {
    display: block;
    padding: 1rem 1.25rem;
    background: var(--dark);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 160px;
}

.plan-badge {
    position: absolute;
    top: -10px;
    right: 10px;
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

.plan-header {
    margin-bottom: 0.75rem;
}

.plan-header h3 {
    font-size: 1.1rem;
    color: white;
    margin-bottom: 0.25rem;
}

.plan-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.plan-price span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.plan-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.plan-features li i {
    color: var(--success);
    font-size: 0.75rem;
    flex-shrink: 0;
}

/* ============================================
   DIVIDER
   ============================================ */

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-muted);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

/* ============================================
   DEMO CREDENTIALS
   ============================================ */

.auth-demo {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
}

.auth-demo p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.auth-demo code {
    background: var(--dark);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    display: inline-block;
}

/* ============================================
   FOOTER
   ============================================ */

.auth-footer {
    margin-top: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.auth-footer p {
    color: var(--text-muted);
}

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

.auth-footer a:hover {
    text-decoration: underline;
}

.back-home {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.back-home:hover {
    color: var(--primary);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.auth-card {
    animation: slideIn 0.5s ease;
}