/* ============================================
   A-CASA - Modern Roofing Services Landing Page
   Custom CSS with Modern Design Principles
   ============================================ */

/* ============================================
   ROOT VARIABLES & CSS CUSTOM PROPERTIES
   ============================================ */
:root {
    /* Primary Colors */
    --primary-color: #FF6B35;
    --primary-dark: #E55A2B;
    --primary-light: #FF8259;
    --secondary-color: #004E89;
    --secondary-dark: #003D6E;
    --secondary-light: #1A6BA8;
    
    /* Neutral Colors */
    --dark: #1A1A1A;
    --dark-gray: #2D2D2D;
    --medium-gray: #6B6B6B;
    --light-gray: #E5E5E5;
    --lighter-gray: #F5F5F5;
    --white: #FFFFFF;
    
    /* Accent Colors */
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Container */
    --container-max-width: 1280px;
    --container-padding: 1.5rem;
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 100%;
    height: 100%;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    width: 100%;
    min-height: 100vh;
    position: relative;
}

/* Global image constraints */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-extrabold);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

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

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

.section-description {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--medium-gray);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
    color: var(--white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--dark);
    border-color: var(--light-gray);
}

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

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

.btn-light:hover {
    background-color: var(--lighter-gray);
    color: var(--primary-dark);
}

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

.btn-block {
    width: 100%;
}

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

.nav.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    background-color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    position: relative;
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    color: var(--dark);
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

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

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-phone .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.nav-phone .nav-link::after {
    display: none;
}

.nav-phone .nav-link:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-cta {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    position: relative;
}

.hamburger {
    width: 100%;
    height: 3px;
    background-color: var(--dark);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    display: block;
}

/* Mobile Navigation */
@media (max-width: 1024px) {
    .nav-container {
        position: relative;
    }
    
    .nav-logo {
        z-index: 1000;
    }
    
    .nav-cta {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 76px;
        left: -100%;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        max-width: 100vw;
        background-color: var(--white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
        z-index: 1000;
        overflow-y: auto;
        max-height: calc(100vh - 76px);
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-phone .nav-link {
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
}

/* Mobile - Small devices */
@media (max-width: 768px) {
    .nav-container {
        padding-top: 0.75rem;
        padding-bottom: 0.75rem;
    }
    
    .nav-logo {
        padding: 0.5rem 1rem;
    }
    
    .logo-img {
        height: 32px;
    }
    
    .nav-toggle {
        width: 28px;
        height: 22px;
    }
    
    .hamburger {
        height: 2.5px;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 76px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(0,0,0,0.03)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-3xl) var(--container-padding);
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.hero-title {
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--dark), var(--secondary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--light-gray);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--medium-gray);
    font-weight: var(--font-weight-medium);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease-out 0.3s backwards;
}

.hero-image-main {
    width: 100%;
    height: 600px;
    object-fit: cover;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    display: block;
}

.hero-image-placeholder {
    width: 100%;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
}

.hero-image-placeholder::after {
    content: 'HERO IMAGE PLACEHOLDER';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
    text-align: center;
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

/* Mobile Hero */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-image {
        display: none;
    }
    
    .hero-image-main {
        height: 300px;
    }
    
    .hero-image-placeholder {
        height: 300px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-lg {
        width: 100%;
    }
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    padding: var(--spacing-3xl) 0;
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background-color: var(--lighter-gray);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    background-color: var(--white);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    font-size: 2rem;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.feature-card h3 {
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--medium-gray);
    line-height: 1.8;
}

/* ============================================
   MATERIALS SECTION
   ============================================ */
.materials {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--lighter-gray) 100%);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.material-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.material-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.material-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--white);
    font-size: 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.material-card h3 {
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.material-details {
    list-style: none;
    padding: 0;
}

.material-details li {
    color: var(--medium-gray);
    line-height: 1.8;
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.material-details li::before {
    content: '●';
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.material-details strong {
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
}

.materials-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.materials-cta-content h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.materials-cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--lighter-gray) 0%, var(--white) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    color: var(--white);
    font-size: 1.75rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    font-size: 1.375rem;
}

.service-card p {
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.service-specs {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-lg);
}

.service-specs li {
    color: var(--medium-gray);
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
}

.service-specs li i {
    color: var(--success);
    font-size: 0.75rem;
}

.service-image {
    width: 250px;
    height: 250px;
    max-width: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.service-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--light-gray), var(--lighter-gray));
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.service-image-placeholder::after {
    content: 'SERVICE IMAGE';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--medium-gray);
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
}

/* ============================================
   WORK PROCESS SECTION
   ============================================ */
.work-process {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--lighter-gray) 50%, var(--white) 100%);
    position: relative;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

.process-step {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    border: 2px solid var(--light-gray);
}

.process-step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-color);
}

.process-number {
    position: absolute;
    top: -15px;
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    box-shadow: var(--shadow-lg);
}

.process-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary-color));
    color: var(--white);
    font-size: 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.process-step h3 {
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.process-step > p {
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.process-details {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--light-gray);
}

.process-details li {
    color: var(--medium-gray);
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.process-details li::before {
    content: '✓';
    color: var(--success);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.process-cta {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.process-cta h3 {
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.process-cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.about-image-placeholder::after {
    content: 'ABOUT IMAGE';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
}

.about-badge {
    position: absolute;
    bottom: -20px;
    right: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-2xl);
}

.badge-number {
    font-size: 3rem;
    font-weight: var(--font-weight-extrabold);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.badge-text {
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
}

.about-content {
    padding: var(--spacing-lg);
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.about-feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.about-feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 107, 53, 0.2));
    color: var(--primary-color);
    font-size: 1.25rem;
    border-radius: var(--radius-lg);
}

.about-feature-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.about-feature-item p {
    font-size: 0.9375rem;
    color: var(--medium-gray);
    margin: 0;
}

@media (max-width: 968px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-image-placeholder {
        height: 350px;
    }
}

/* ============================================
   QUALITY SECTION
   ============================================ */
.quality {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary-color));
}

.quality-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.quality-text {
    color: var(--white);
}

.quality-text .section-subtitle {
    color: var(--primary-color);
}

.quality-text .section-title {
    color: var(--white);
}

.quality-text p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

.quality-image-placeholder {
    width: 100%;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.quality-image-placeholder::after {
    content: 'QUALITY IMAGE';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
}

@media (max-width: 968px) {
    .quality-content {
        grid-template-columns: 1fr;
    }
    
    .quality-image-placeholder {
        height: 300px;
    }
}

/* ============================================
   GALLERY SECTION
   ============================================ */
.gallery {
    padding: var(--spacing-3xl) 0;
    background-color: var(--lighter-gray);
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--white);
    color: var(--dark);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--light-gray), var(--lighter-gray));
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.gallery-item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-item-info h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.gallery-item-info p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    margin: 0;
}

.gallery-load-more {
    text-align: center;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq {
    padding: var(--spacing-3xl) 0;
    background-color: var(--white);
}

.faq-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-3xl);
    align-items: flex-start;
}

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

.faq-item {
    background-color: var(--lighter-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item.active {
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: 1.0625rem;
    font-weight: var(--font-weight-semibold);
    color: var(--dark);
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    flex-shrink: 0;
    margin-left: var(--spacing-md);
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--medium-gray);
    line-height: 1.8;
}

.faq-image-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
    position: sticky;
    top: 100px;
}

.faq-image-placeholder::after {
    content: 'FAQ IMAGE';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: var(--font-weight-bold);
    font-size: 1.5rem;
}

@media (max-width: 968px) {
    .faq-container {
        grid-template-columns: 1fr;
    }
    
    .faq-image {
        order: -1;
    }
    
    .faq-image-placeholder {
        height: 300px;
        position: relative;
    }
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--lighter-gray) 0%, var(--white) 100%);
}

.testimonials-slider {
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
}

.testimonial-card {
    background-color: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.testimonial-quote {
    margin-bottom: var(--spacing-lg);
}

.testimonial-quote i {
    font-size: 3rem;
    color: var(--primary-color);
    opacity: 0.3;
}

.testimonial-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--dark);
    margin-bottom: var(--spacing-xl);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.author-avatar {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.author-info p {
    font-size: 0.9375rem;
    color: var(--medium-gray);
    margin: 0;
}

.testimonial-rating {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.testimonial-rating i {
    color: var(--warning);
    font-size: 1.25rem;
}

.testimonials-navigation {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.testimonial-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.testimonial-nav:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    color: var(--white);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--lighter-gray);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    font-size: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.contact-details h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.contact-details p,
.contact-details a {
    color: var(--medium-gray);
    font-size: 0.9375rem;
    margin: 0;
}

.contact-details a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: var(--white);
    color: var(--primary-color);
    font-size: 1.25rem;
    border-radius: 50%;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    background-color: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: var(--font-weight-medium);
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1.25rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    color: var(--dark);
    background-color: var(--lighter-gray);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    background-color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    color: var(--medium-gray);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 0.25rem;
    cursor: pointer;
}

@media (max-width: 968px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding-top: var(--spacing-3xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: inline-block;
    width: fit-content;
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 35px;
    width: auto;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social .social-link {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.footer-social .social-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
}

.footer-title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--white);
}

@media (max-width: 968px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* ============================================
   FLOATING ELEMENTS
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    z-index: 999;
    text-decoration: none;
    animation: pulse 2s infinite;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .whatsapp-float {
        bottom: 80px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 1.75rem;
    }
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: var(--white);
}

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

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

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

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }
    
    html, body {
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        height: auto;
        min-height: 100vh;
    }
    
    /* Force all images to respect container width */
    img {
        max-width: 100% !important;
        height: auto !important;
    }
    
    .service-image {
        width: 100%;
        height: auto;
        max-height: 250px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        overflow: visible;
    }
    
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
    
    .materials-grid,
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .materials-cta {
        flex-direction: column;
        text-align: center;
    }
    
    .material-card,
    .process-step {
        padding: var(--spacing-lg);
    }
    
    .service-specs {
        font-size: 0.875rem;
    }
}

/* Smooth Scrolling for All Links */
html {
    scroll-padding-top: 76px;
}

/* Print Styles */
@media print {
    .nav,
    .back-to-top,
    .whatsapp-float {
        display: none;
    }
}