/* ===================================
   Sandcastle Beach House - Main Stylesheet
   Coastal Refined Luxury Design
   =================================== */

/* ===================================
   CSS VARIABLES - DESIGN SYSTEM
   =================================== */
:root {
    /* Colors - Coastal Palette */
    --color-ocean-deep: #0A2540;
    --color-ocean-medium: #1E4D7B;
    --color-ocean-light: #3A7CA5;
    --color-sand-dark: #D4C4A8;
    --color-sand-light: #F5EFE0;
    --color-sand-cream: #FAF7F0;
    --color-white: #FFFFFF;
    --color-coral: #FF6B6B;
    --color-coral-light: #FF8E8E;
    --color-text-dark: #1A1A1A;
    --color-text-medium: #4A4A4A;
    --color-text-light: #7A7A7A;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-wide: 1400px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.08);
    --shadow-md: 0 4px 16px rgba(10, 37, 64, 0.12);
    --shadow-lg: 0 8px 32px rgba(10, 37, 64, 0.16);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    line-height: 1.6;
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-medium);
}

/* ===================================
   CONTAINER & LAYOUT
   =================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-wide {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-ocean-deep);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-ocean-medium);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-ocean-deep);
    border: 2px solid var(--color-ocean-deep);
}

.btn-secondary:hover {
    background-color: var(--color-ocean-deep);
    color: var(--color-white);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-ocean-deep);
    border: 2px solid var(--color-ocean-deep);
}

.btn-outline:hover {
    background-color: var(--color-ocean-deep);
    color: var(--color-white);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   NAVIGATION
   =================================== */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.nav-bar.scrolled {
    box-shadow: var(--shadow-md);
    background-color: rgba(255, 255, 255, 0.98);
}

.nav-container {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 1rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    gap: 0;
    line-height: 1;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-ocean-deep);
}

.logo-sub {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-ocean-medium);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-dark);
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-ocean-deep);
    transition: width var(--transition-normal);
}

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

.nav-cta {
    background-color: var(--color-coral);
    color: var(--color-white);
    padding: 0.625rem 1.5rem;
    border-radius: var(--border-radius-md);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background-color: var(--color-coral-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-ocean-deep);
    transition: var(--transition-normal);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

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

.hero-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-ocean-deep) 0%, var(--color-ocean-medium) 50%, var(--color-ocean-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.125rem;
    text-align: center;
    padding: var(--spacing-md);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(10, 37, 64, 0.3), rgba(10, 37, 64, 0.6));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero-title-pre {
    display: block;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-sand-light);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.3s forwards;
}

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    opacity: 0;
    animation: fadeInUp 1s ease-out 0.5s forwards;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-sand-light);
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeIn 0.8s ease-out 0.8s forwards;
}

.hero-cta-group {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.hero-features {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 1.2s forwards;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-white);
    font-size: 0.95rem;
    font-weight: 500;
}

.feature-icon {
    width: 24px;
    height: 24px;
    stroke: var(--color-coral);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    text-align: center;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
}

.scroll-text {
    display: block;
    color: var(--color-white);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-white);
    border-bottom: 2px solid var(--color-white);
    transform: rotate(45deg);
    margin: 0 auto;
    animation: bounce 2s infinite;
}

/* ===================================
   INTRO SECTION
   =================================== */
.intro-section {
    background-color: var(--color-sand-cream);
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-ocean-medium);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
    padding: 0.5rem 1rem;
    background-color: rgba(30, 77, 123, 0.1);
    border-radius: 50px;
}

.section-title {
    color: var(--color-ocean-deep);
    margin-bottom: var(--spacing-md);
}

.section-title.centered {
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-lg);
}

.section-subtitle.centered {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.intro-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-medium);
}

/* ===================================
   RENTAL CARDS SECTION
   =================================== */
.rental-cards-section {
    background-color: var(--color-white);
}

.rental-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.rental-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
}

.rental-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.rental-card.featured {
    border: 3px solid var(--color-coral);
}

.card-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background-color: var(--color-coral);
    color: var(--color-white);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 10;
}

.card-image-placeholder {
    height: 300px;
    background: linear-gradient(135deg, var(--color-ocean-medium) 0%, var(--color-ocean-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-md);
    font-size: 0.95rem;
}

.card-content {
    padding: var(--spacing-md);
}

.card-title {
    color: var(--color-ocean-deep);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: 1rem;
    color: var(--color-ocean-medium);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.card-specs {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-top: 2px solid var(--color-sand-light);
    border-bottom: 2px solid var(--color-sand-light);
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--color-text-medium);
}

.spec-item strong {
    font-size: 1.5rem;
    color: var(--color-ocean-deep);
    font-weight: 600;
}

.card-description {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.card-features {
    margin-bottom: var(--spacing-md);
}

.card-features li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-medium);
}

.card-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-coral);
    font-weight: 600;
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features-section {
    position: relative;
    background-color: var(--color-ocean-deep);
    color: var(--color-white);
    overflow: hidden;
}

.features-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-ocean-deep) 0%, var(--color-ocean-medium) 100%);
    opacity: 0.9;
}

.features-grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.feature-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(255, 107, 107, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon-large {
    width: 40px;
    height: 40px;
    stroke: var(--color-coral);
}

.feature-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.feature-description {
    color: rgba(255, 255, 255, 0.85);
}

/* ===================================
   GALLERY PREVIEW
   =================================== */
.gallery-preview {
    padding: 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(2, 300px);
    gap: 1px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.gallery-item.large {
    grid-column: span 3;
    grid-row: span 2;
}

.gallery-item:nth-child(2) {
    grid-column: span 3;
}

.gallery-item:nth-child(3) {
    grid-column: span 2;
}

.gallery-item:nth-child(4) {
    grid-column: span 2;
}

.gallery-item:nth-child(5) {
    grid-column: span 2;
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-ocean-light) 0%, var(--color-ocean-medium) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 0.875rem;
    text-align: center;
    padding: var(--spacing-sm);
    transition: transform var(--transition-slow);
}

.gallery-item:hover .gallery-placeholder {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 37, 64, 0.9), transparent);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-label {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 600;
}

/* ===================================
   CTA SECTION
   =================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-ocean-deep) 0%, var(--color-ocean-medium) 100%);
    color: var(--color-white);
    text-align: center;
}

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

.cta-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-text {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background-color: var(--color-ocean-deep);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-coral);
    padding-left: var(--spacing-xs);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
}

.contact-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 0.25rem;
    stroke: var(--color-coral);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-contact a:hover {
    color: var(--color-coral);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer-credit {
    color: rgba(255, 255, 255, 0.5);
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

.fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }
.fade-in:nth-child(5) { animation-delay: 0.5s; }
.fade-in:nth-child(6) { animation-delay: 0.6s; }

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

/* Tablet Landscape & Below */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-2xl: 5rem;
    }
    
    .rental-cards {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* Tablet Portrait & Below */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        gap: 0;
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .nav-menu.active {
        max-height: 500px;
    }
    
    .nav-link {
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-sand-light);
    }
    
    .nav-cta {
        margin-top: var(--spacing-sm);
        text-align: center;
    }
    
    .hero-cta-group {
        flex-direction: column;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(5, 250px);
    }
    
    .gallery-item.large,
    .gallery-item:nth-child(2),
    .gallery-item:nth-child(3),
    .gallery-item:nth-child(4),
    .gallery-item:nth-child(5) {
        grid-column: 1;
        grid-row: auto;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .rental-cards {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .card-specs {
        flex-wrap: wrap;
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }