/* ========================================
   AUTH PAGE - LUXURY STYLE
======================================== */

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

html {
    scroll-behavior: smooth;
}

html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: #2C2C2C;
    background-color: #F5F1E8;
    font-weight: 300;
    letter-spacing: 0.3px;
}

/* CSS Variables */
:root {
    --color-cream: #F5F1E8;
    --color-sand: #E8DCC8;
    --color-taupe: #C9B8A0;
    --color-charcoal: #2C2C2C;
    --color-black: #1A1A1A;
    --color-white: #FFFFFF;
    --color-gold: #D4AF37;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   HEADER (MINIMAL FOR AUTH PAGE)
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(245, 241, 232, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(44, 44, 44, 0.1);
    z-index: 1000;
    transition: var(--transition-smooth);
    padding: 1rem 0;
}

.navbar {
    padding: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.2rem;
    color: var(--color-gold);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    letter-spacing: 0.3rem;
    font-weight: 400;
    color: var(--color-black);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 3rem;
    list-style: none;
}

.nav-link {
    font-size: 0.9rem;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: var(--color-charcoal);
    font-weight: 400;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-gold);
    transition: width 0.4s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.post-ad-btn {
    padding: 0.75rem 2rem;
    background: var(--color-black);
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
    font-size: 0.85rem;
    letter-spacing: 0.15rem;
    text-transform: uppercase;
    font-weight: 400;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.post-ad-btn:hover {
    background: var(--color-gold);
    color: var(--color-black);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 30px;
    height: 1px;
    background: var(--color-charcoal);
    transition: var(--transition-smooth);
}

/* ========================================
   AUTH SECTION
======================================== */
.auth-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.auth-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.auth-background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?w=1920&q=80');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
}

.auth-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-sand) 100%);
}

/* ========================================
   AUTH CONTAINER
======================================== */
.auth-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--color-white);
    border: 1px solid var(--color-sand);
    overflow: hidden;
    min-height: 700px;
}

/* ========================================
   AUTH BRANDING (LEFT SIDE)
======================================== */
.auth-branding {
    background: var(--color-black);
    padding: 4rem 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.auth-branding::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(50px, 50px); }
    50% { transform: translate(0, 100px); }
    75% { transform: translate(-50px, 50px); }
}

.branding-content {
    position: relative;
    z-index: 1;
    color: var(--color-cream);
    text-align: center;
}

.brand-logo {
    margin-bottom: 3rem;
}

.logo-icon-large {
    font-size: 4rem;
    color: var(--color-gold);
    display: block;
    margin-bottom: 1rem;
}

.brand-logo h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    letter-spacing: 0.5rem;
    font-weight: 400;
    color: var(--color-gold);
}

.branding-content h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    color: var(--color-cream);
    margin-bottom: 1.5rem;
}

.branding-content > p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-taupe);
    margin-bottom: 3rem;
    font-weight: 300;
}

.brand-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(201, 184, 160, 0.3);
}

.brand-stat h3 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.brand-stat p {
    font-size: 0.75rem;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: var(--color-taupe);
    font-weight: 400;
}

/* ========================================
   AUTH FORMS (RIGHT SIDE)
======================================== */
.auth-forms {
    background: var(--color-cream);
    padding: 3rem;
    position: relative;
}

/* Tab Navigation */
.auth-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 3rem;
    position: relative;
    border-bottom: 1px solid var(--color-sand);
}

.auth-tab {
    flex: 1;
    padding: 1.25rem 2rem;
    background: transparent;
    border: none;
    font-size: 0.9rem;
    letter-spacing: 0.15rem;
    text-transform: uppercase;
    color: var(--color-charcoal);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
}

.auth-tab:hover {
    color: var(--color-gold);
}

.auth-tab.active {
    color: var(--color-gold);
}

.tab-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50%;
    height: 2px;
    background: var(--color-gold);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.auth-tab:last-child.active ~ .tab-indicator {
    transform: translateX(100%);
}

/* Form Container */
.auth-form-container {
    display: none;
    animation: fadeIn 0.5s ease;
}

.auth-form-container.active {
    display: block;
}

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

.form-header {
    margin-bottom: 2.5rem;
}

.form-header h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    color: var(--color-black);
    margin-bottom: 0.5rem;
}

.form-header p {
    font-size: 1rem;
    color: var(--color-charcoal);
    font-weight: 300;
}

/* Form Styles */
.auth-form {
    width: 100%;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
    color: var(--color-charcoal);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1.25rem;
    color: var(--color-taupe);
    font-size: 0.95rem;
}

.input-wrapper input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.25rem;
    border: 1px solid var(--color-sand);
    background: var(--color-white);
    font-size: 0.95rem;
    color: var(--color-charcoal);
    transition: var(--transition-smooth);
    font-weight: 300;
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--color-gold);
}

.toggle-password {
    position: absolute;
    right: 1.25rem;
    background: transparent;
    border: none;
    color: var(--color-taupe);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition-smooth);
}

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

/* Password Strength */
.password-strength {
    margin-top: 0.75rem;
}

.strength-bar {
    width: 100%;
    height: 4px;
    background: var(--color-sand);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.strength-fill {
    height: 100%;
    width: 0%;
    background: var(--color-taupe);
    transition: width 0.3s ease, background 0.3s ease;
}

.strength-fill.weak {
    width: 33%;
    background: #ef4444;
}

.strength-fill.medium {
    width: 66%;
    background: #f59e0b;
}

.strength-fill.strong {
    width: 100%;
    background: var(--color-gold);
}

.strength-text {
    font-size: 0.8rem;
    color: var(--color-charcoal);
    font-weight: 300;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-weight: 300;
    color: var(--color-charcoal);
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-sand);
    background: var(--color-white);
    position: relative;
    transition: var(--transition-smooth);
    flex-shrink: 0;
    margin-top: 2px;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--color-black);
    border-color: var(--color-black);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--color-gold);
}

.checkbox-text a {
    color: var(--color-gold);
    text-decoration: underline;
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.forgot-password {
    font-size: 0.85rem;
    color: var(--color-gold);
    text-decoration: none;
    font-weight: 400;
    letter-spacing: 0.05rem;
}

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

/* Submit Button */
.btn-auth-submit {
    width: 100%;
    padding: 1.25rem;
    background: var(--color-black);
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
    font-size: 0.85rem;
    letter-spacing: 0.15rem;
    text-transform: uppercase;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-bottom: 1.5rem;
}

.btn-auth-submit:hover {
    background: var(--color-gold);
    color: var(--color-black);
}

/* Divider */
.divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
}

.divider::before,
.divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 80px);
    height: 1px;
    background: var(--color-sand);
}

.divider::before {
    left: 0;
}

.divider::after {
    right: 0;
}

.divider span {
    font-size: 0.85rem;
    color: var(--color-charcoal);
    background: var(--color-cream);
    padding: 0 1rem;
    font-weight: 300;
}

/* Social Auth Buttons */
.social-auth {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.btn-social {
    padding: 1rem;
    background: var(--color-white);
    border: 1px solid var(--color-sand);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
    font-weight: 400;
}

.btn-social i {
    font-size: 1.1rem;
}

.btn-google {
    color: #DB4437;
}

.btn-google:hover {
    background: #DB4437;
    color: var(--color-white);
    border-color: #DB4437;
}

.btn-facebook {
    color: #4267B2;
}

.btn-facebook:hover {
    background: #4267B2;
    color: var(--color-white);
    border-color: #4267B2;
}

/* ========================================
   FOOTER
======================================== */
.auth-footer {
    background: var(--color-cream);
    padding: 2rem 0;
    border-top: 1px solid var(--color-sand);
}

.auth-footer .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.auth-footer .footer-bottom p {
    color: var(--color-charcoal);
    font-size: 0.85rem;
    font-weight: 300;
}

.auth-footer .footer-bottom-links {
    display: flex;
    gap: 2rem;
}

.auth-footer .footer-bottom-links a {
    color: var(--color-charcoal);
    font-size: 0.85rem;
    font-weight: 300;
}

.auth-footer .footer-bottom-links a:hover {
    color: var(--color-gold);
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background: var(--color-cream);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        transition: left 0.5s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 1000;
    }

    .auth-container {
        grid-template-columns: 1fr;
    }

    .auth-branding {
        display: none;
    }

    .auth-section {
        padding: 6rem 1.5rem 2rem;
    }
}

@media (max-width: 768px) {
    .auth-forms {
        padding: 2rem;
    }

    .form-header h2 {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
        margin-bottom: 0;
    }

    .social-auth {
        grid-template-columns: 1fr;
    }

    .auth-footer .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .auth-tabs {
        margin-bottom: 2rem;
    }

    .auth-tab {
        padding: 1rem 1.5rem;
        font-size: 0.8rem;
    }

    .form-header h2 {
        font-size: 1.75rem;
    }

    .btn-auth-submit {
        padding: 1rem;
        font-size: 0.8rem;
    }
}

/* ========================================
   LOADING STATE
======================================== */
.btn-auth-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-auth-submit .spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-gold);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 0.5rem;
}

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

/* ========================================
   FORM VALIDATION
======================================== */
.input-wrapper input.error {
    border-color: #ef4444;
}

.input-wrapper input.success {
    border-color: var(--color-gold);
}

.error-message {
    font-size: 0.75rem;
    color: #ef4444;
    margin-top: 0.5rem;
    display: none;
}

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