/* ===================================
   AIRBNB-INSPIRED DESIGN SYSTEM
   Clean, minimal, user-friendly
   =================================== */

/* CSS Variables (Design Tokens) */
:root {
    /* Airbnb Color Palette - Subtle & Clean */
    --color-primary: #FF385C;
    /* Airbnb Red (for CTAs) */
    --color-primary-dark: #E61E4D;
    --color-primary-light: #FF5A5F;

    /* Secondary Colors */
    --color-secondary: #2B2D42;
    --color-secondary-light: #454866;

    /* Neutrals - Airbnb's Gray Scale */
    --color-black: #222222;
    /* Airbnb's signature black */
    --color-gray-900: #222222;
    --color-gray-800: #484848;
    --color-gray-700: #717171;
    --color-gray-600: #B0B0B0;
    --color-gray-500: #DDDDDD;
    --color-gray-400: #EBEBEB;
    --color-gray-300: #F7F7F7;
    --color-gray-200: #FAFAFA;
    --color-gray-100: #FFFFFF;

    /* Functional Colors */
    --color-success: #008489;
    /* Airbnb Teal */
    --color-warning: #FFC043;
    --color-error: #C13515;

    --color-white: #FFFFFF;

    /* Typography - Airbnb uses Circular */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    /* Font Sizes - Airbnb's scale */
    --text-xs: 0.75rem;
    /* 12px */
    --text-sm: 0.875rem;
    /* 14px */
    --text-base: 1rem;
    /* 16px */
    --text-lg: 1.125rem;
    /* 18px */
    --text-xl: 1.375rem;
    /* 22px */
    --text-2xl: 1.625rem;
    /* 26px */
    --text-3xl: 2rem;
    /* 32px */
    --text-4xl: 2.5rem;
    /* 40px */
    --text-5xl: 3rem;
    /* 48px */

    /* Font Weights */
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;

    /* Spacing (8px Grid) */
    --space-1: 0.5rem;
    /* 8px */
    --space-2: 1rem;
    /* 16px */
    --space-3: 1.5rem;
    /* 24px */
    --space-4: 2rem;
    /* 32px */
    --space-5: 2.5rem;
    /* 40px */
    --space-6: 3rem;
    /* 48px */
    --space-8: 4rem;
    /* 64px */
    --space-10: 5rem;
    /* 80px */

    /* Shadows - Subtle, like Airbnb */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);

    /* Border Radius - Airbnb uses consistent 12px */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Container Width */
    --container-max: 1280px;
    --container-narrow: 800px;

    /* Borders */
    --border-light: 1px solid var(--color-gray-500);
    --border-medium: 1px solid var(--color-gray-400);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--weight-normal);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: var(--weight-semibold);
    line-height: 1.2;
    color: var(--color-black);
}

/* ===================================
   TESTIMONIALS (Added)
   =================================== */

.testimonials {
    background: var(--color-gray-100);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.testimonial-card {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: var(--border-light);
    box-shadow: var(--shadow-sm);
}

.testimonial-quote {
    font-size: var(--text-lg);
    line-height: 1.6;
    color: var(--color-black);
    margin-bottom: var(--space-4);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: var(--border-light);
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--color-gray-300);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: var(--weight-bold);
    color: var(--color-black);
}

.author-title {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-gray-800);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* ===================================
   NAVIGATION - Airbnb Style
   =================================== */

.navbar {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: var(--border-light);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-2xl);
    font-weight: var(--weight-bold);
    color: var(--color-primary);
}

.logo-icon {
    font-size: var(--text-3xl);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav-links a {
    font-weight: var(--weight-medium);
    color: var(--color-gray-900);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-base);
}

.nav-links a:hover {
    background: var(--color-gray-300);
    color: var(--color-black);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 100%;
    height: 3px;
    background-color: var(--color-gray-900);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Mobile Menu Container */
.mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-white);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    border-top: var(--border-light);
    transform: translateY(0);
    opacity: 1;
    transition: all 0.3s ease;
}

.mobile-menu.hidden {
    display: none;
}

.mobile-link {
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-gray-300);
}

.mobile-link.highlight {
    color: var(--color-primary);
    font-weight: var(--weight-bold);
    border-bottom: none;
}

/* ===================================
   BUTTONS - Airbnb Style
   =================================== */

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-weight: var(--weight-semibold);
    font-size: var(--text-base);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(to right, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-900);
    border-color: var(--color-gray-500);
}

.btn-secondary:hover {
    border-color: var(--color-black);
    background: var(--color-gray-300);
}

.btn-large {
    padding: 14px var(--space-6);
    font-size: var(--text-lg);
}

.btn-block {
    display: block;
    width: 100%;
}

/* ===================================
   CARDS - Airbnb Style
   =================================== */

.card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    border: var(--border-light);
}

.card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

/* ===================================
   HERO SECTION - Clean & Minimal
   =================================== */

.hero {
    background: linear-gradient(rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85)), url('../assets/images/hero-banner.png');
    background-size: cover;
    background-position: center;
    padding: var(--space-10) 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-3);
    line-height: 1.1;
    color: var(--color-black);
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-gray-700);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.hero-cta {
    margin-bottom: var(--space-8);
}

.cta-note {
    margin-top: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: var(--border-light);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--weight-semibold);
    color: var(--color-black);
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

/* ===================================
   SECTIONS
   =================================== */

.features,
.how-it-works,
.testimonials {
    padding: var(--space-10) 0;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--weight-semibold);
    text-align: center;
    margin-bottom: var(--space-3);
    color: var(--color-black);
}

.section-subtitle {
    font-size: var(--text-lg);
    text-align: center;
    color: var(--color-gray-700);
    margin-bottom: var(--space-8);
}

/* ===================================
   FEATURES GRID
   =================================== */

.features {
    background: var(--color-gray-200);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    background: var(--color-white);
    padding: var(--space-6);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: var(--border-light);
}

.feature-card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-3);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-2);
    color: var(--color-black);
}

.feature-description {
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
}

.feature-body {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    line-height: 1.6;
}

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

.footer {
    background: var(--color-gray-300);
    color: var(--color-gray-800);
    padding: var(--space-8) 0 var(--space-4);
    border-top: var(--border-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer-brand .logo {
    color: var(--color-black);
    margin-bottom: var(--space-2);
}

.footer-tagline {
    color: var(--color-gray-700);
    font-size: var(--text-sm);
}

.footer-column h4 {
    color: var(--color-black);
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-3);
}

.footer-column a {
    display: block;
    color: var(--color-gray-800);
    font-size: var(--text-sm);
    margin-bottom: var(--space-2);
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--color-black);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-4);
    border-top: var(--border-light);
    color: var(--color-gray-700);
    font-size: var(--text-sm);
}

/* ===================================
   USER MENU - Airbnb Style
   =================================== */

.header-user-menu {
    position: relative;
    display: inline-block;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 5px 5px 5px 12px;
    background: white;
    border: 1px solid var(--color-gray-500);
    border-radius: 21px;
    cursor: pointer;
    transition: box-shadow 0.2s;
    height: 42px;
}

.user-menu-btn:hover {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.18);
}

.user-menu-icon {
    font-size: 16px;
    color: var(--color-gray-900);
}

.user-avatar-placeholder {
    width: 30px;
    height: 30px;
    background: var(--color-gray-700);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 240px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
    z-index: 2000;
    display: none;
    border: 1px solid var(--color-gray-200);
}

.user-dropdown.active {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--color-gray-800);
    font-weight: 400;
    text-decoration: none;
    transition: background 0.1s;
    text-align: left;
    width: 100%;
    border: none;
    background: none;
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--color-gray-100);
    color: var(--color-black);
}

.dropdown-item.bold {
    font-weight: 600;
}

.dropdown-divider {
    height: 1px;
    background: var(--color-gray-300);
    margin: 8px 0;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    .hero-title {
        font-size: var(--text-4xl);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        padding: 0 var(--space-2);
    }

    .nav-content {
        height: 60px;
    }

    /* Hide desktop links on mobile */
    .nav-links {
        display: none !important;
    }

    /* Show Mobile Menu Button */
    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero {
        padding: var(--space-8) 0;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    /* Adjust grid for smaller screens */
    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: var(--space-4);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-2xl);
    }

    .section-title {
        font-size: var(--text-2xl);
        /* Reduced from 3xl */
    }

    /* Ensure no horizontal scroll on very small devices */
    body {
        overflow-x: hidden;
    }
}

/* ===================================
   HOW IT WORKS (Redesign)
   =================================== */

.how-it-works {
    background-color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.steps-container {
    position: relative;
    max-width: 1000px;
    margin: 40px auto 0;
    padding: 0 20px;
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: var(--space-6);
    position: relative;
    z-index: 2;
}

/* Connector Line */
.steps-connector {
    position: absolute;
    top: 30px;
    /* Center of the 60px icon box */
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--color-gray-200);
    z-index: 1;
}

.step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    max-width: 300px;
}

.step-icon-box {
    width: 60px;
    height: 60px;
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: var(--space-4);
    box-shadow: 0 0 0 10px var(--color-white);
    /* Mask connector */
    transition: all 0.3s ease;
    position: relative;
}

.step:hover .step-icon-box {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(255, 56, 92, 0.3), 0 0 0 10px var(--color-white);
}

.step-number-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    background: var(--color-black);
    color: white;
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-white);
}

.step-content {
    padding: 0 var(--space-2);
}

.step-title {
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    color: var(--color-black);
    margin-bottom: var(--space-2);
}

.step-description {
    font-size: var(--text-base);
    color: var(--color-gray-700);
    line-height: 1.5;
}

@media (max-width: 768px) {
    .steps {
        flex-direction: column;
        gap: var(--space-6);
    }

    .steps-container {
        margin-top: 20px;
    }

    .steps-connector {
        display: none;
    }

    .step {
        width: 100%;
        max-width: 100%;
        flex-direction: row;
        text-align: left;
        gap: var(--space-4);
        align-items: flex-start;
        background: var(--color-gray-100);
        padding: var(--space-4);
        border-radius: var(--radius-lg);
    }

    .step-icon-box {
        margin-bottom: 0;
        flex-shrink: 0;
        box-shadow: none;
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .step-number-badge {
        top: -5px;
        right: -5px;
    }

    .step-content {
        padding: 0;
    }

    .step:hover .step-icon-box {
        transform: none;
        box-shadow: none;
    }
}

/* ── Utility Classes ────────────────────────────── */
.mobile-only {
    display: none !important;
}

@media (max-width: 768px) {
    .mobile-only {
        display: block !important;
    }

    .desktop-only {
        display: none !important;
    }
}