/* ============================================
   PRECAST CONSTRUCTION SOLUTIONS ZW
   Industrial-Modern Stylesheet
   ============================================
   
   TABLE OF CONTENTS:
   1. CSS Variables (Design Tokens)
   2. Reset & Base Styles
   3. Utility Classes
   4. Layout & Grid
   5. Components
      - Buttons
      - Forms
      - Cards
   6. Header & Navigation
   7. Sections
      - Hero
      - Trust Bar
      - About
      - Services
      - Features
      - Portfolio
      - Testimonials
      - Pricing
      - Contact
   8. Footer
   9. Animations & Effects
   10. Media Queries (Responsive)
   11. Accessibility
   
   ============================================ */

/* ============================================
   1. CSS VARIABLES (Design Tokens)
   ============================================ */
:root {
    /* Colors - Industrial Modern Palette */
    --color-primary: #000000;
    --color-primary-light: #1a1a1a;
    --color-primary-lighter: #2d2d2d;
    --color-secondary: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    
    /* Accent Colors */
    --color-accent: #525252;
    --color-accent-light: #737373;
    
    /* Semantic Colors */
    --color-text: var(--color-gray-900);
    --color-text-light: var(--color-gray-600);
    --color-text-muted: var(--color-gray-500);
    --color-bg: var(--color-secondary);
    --color-bg-dark: var(--color-primary);
    --color-bg-gray: var(--color-gray-100);
    --color-border: var(--color-gray-200);
    --color-border-dark: var(--color-gray-300);
    
    /* Success/Error States */
    --color-success: #16a34a;
    --color-error: #dc2626;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;
    
    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Spacing */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --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 -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-slower: 500ms ease;
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: var(--space-4);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

/* Skip Link (Accessibility) */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: var(--color-secondary);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
}

/* ============================================
   3. UTILITY CLASSES
   ============================================ */
.text-accent {
    color: var(--color-accent);
}

/* ============================================
   4. LAYOUT & GRID
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section {
    padding: var(--space-16) 0;
}

.section--dark {
    background-color: var(--color-primary);
    color: var(--color-secondary);
}

.section-header {
    text-align: center;
    max-width: 768px;
    margin: 0 auto var(--space-12);
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
    margin-bottom: var(--space-4);
}

.section--dark .section-label {
    color: var(--color-gray-400);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-4);
}

.section--dark .section-title {
    color: var(--color-secondary);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: var(--leading-relaxed);
}

.section--dark .section-subtitle {
    color: var(--color-gray-400);
}

/* ============================================
   5. COMPONENTS
   ============================================ */

/* ----- Buttons ----- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-gray-300);
}

.section--dark .btn--secondary {
    color: var(--color-secondary);
    border-color: var(--color-gray-700);
}

.btn--secondary:hover {
    border-color: var(--color-primary);
    background-color: var(--color-gray-100);
}

.section--dark .btn--secondary:hover {
    border-color: var(--color-secondary);
    background-color: var(--color-primary-light);
}

.btn--light {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-secondary);
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn--light:hover {
    background-color: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--full {
    width: 100%;
}

.btn-icon {
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* Button Loader */
.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn--loading .btn-text {
    display: none;
}

.btn--loading .btn-loader {
    display: block;
}

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

/* ----- Forms ----- */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.section--dark .form-label {
    color: var(--color-gray-300);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    background-color: var(--color-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

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

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray-400);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: var(--space-10);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--space-1);
}

.form-error.visible {
    display: block;
}

.form-input.error,
.form-select.error {
    border-color: var(--color-error);
}

.form-note {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-3);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.form-success {
    display: none;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: #f0fdf4;
    border: 1px solid var(--color-success);
    border-radius: var(--radius-lg);
    margin-top: var(--space-4);
    color: var(--color-success);
}

.form-success svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.form-success.visible {
    display: flex;
}

/* ----- Cards ----- */
.card {
    background-color: var(--color-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

/* ============================================
   6. HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.header--scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 200px;
    background-color: transparent;
    color: var(--color-secondary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    border-radius: var(--radius-md);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: var(--leading-none);
}

.logo-primary {
    font-size: var(--font-size-lg);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.logo-secondary {
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Navigation Menu */
.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-gray-100);
}

.nav-link--cta {
    background-color: var(--color-primary);
    color: var(--color-secondary);
    margin-left: var(--space-2);
}

.nav-link--cta:hover {
    background-color: var(--color-primary-light);
    color: var(--color-secondary);
}

/* Mobile Toggle */
.mobile-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: var(--space-2);
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-base);
    transform-origin: center;
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu (Active State) */
.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-secondary);
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    gap: var(--space-2);
}

.nav-menu.active .nav-link {
    width: 100%;
    padding: var(--space-3) var(--space-4);
}

.nav-menu.active .nav-link--cta {
    margin-left: 0;
    margin-top: var(--space-2);
}

/* ============================================
   7. SECTIONS
   ============================================ */

/* ----- Hero Section ----- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(72px + var(--space-16)) 0 var(--space-16);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-image-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 255, 255, 0.75) 50%, rgba(255, 255, 255, 0.6) 100%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: 
        linear-gradient(var(--color-primary) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-primary) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-black);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

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

.stat-number,
.stat-suffix {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* Hero Form */
.hero-form-wrapper {
    position: relative;
}

.lead-form {
    background-color: var(--color-secondary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.form-header {
    padding: var(--space-6) var(--space-6) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-secondary);
}

.form-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-1);
}

.form-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.lead-form__form {
    padding: var(--space-6);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-gray-500);
    font-size: var(--font-size-xs);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color var(--transition-base);
}

.scroll-indicator:hover {
    color: var(--color-primary);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.5; }
}

/* ----- Trust Bar ----- */
.trust-bar {
    padding: var(--space-8) 0;
    background-color: var(--color-primary);
    color: var(--color-secondary);
}

.trust-bar .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.trust-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    text-align: center;
}

.trust-items {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-8);
}

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

.trust-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: var(--font-bold);
}

.trust-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
}

/* ----- About Section ----- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-content {
    max-width: 600px;
}

.about-text {
    margin-bottom: var(--space-8);
}

.about-text p {
    margin-bottom: var(--space-4);
    color: var(--color-text-light);
    line-height: var(--leading-relaxed);
}

.about-text .lead-text {
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.about-features {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.about-feature .feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-gray-100);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.about-feature .feature-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.about-feature .feature-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* About Visual */
.about-visual {
    position: relative;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.experience-badge {
    position: absolute;
    bottom: -20px;
    right: 20px;
    background-color: var(--color-primary);
    color: var(--color-secondary);
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.exp-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-black);
    line-height: var(--leading-none);
}

.exp-text {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-top: var(--space-1);
}

/* ----- Services Section ----- */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.service-card {
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-gray-800);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-gray-600);
    transform: translateY(-4px);
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--color-primary-lighter);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    color: var(--color-secondary);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    margin-bottom: var(--space-3);
}

.service-desc {
    font-size: var(--font-size-base);
    color: var(--color-gray-400);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.service-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-bottom: var(--space-2);
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--color-gray-500);
    border-radius: 50%;
    flex-shrink: 0;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-semibold);
    color: var(--color-secondary);
    transition: gap var(--transition-base);
}

.service-link:hover {
    gap: var(--space-3);
}

/* ----- Features Section ----- */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.features-intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--space-8);
}

.features-list {
    display: grid;
    gap: var(--space-6);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.feature-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background-color: var(--color-primary);
    border-radius: var(--radius-md);
    color: var(--color-secondary);
    flex-shrink: 0;
}

.feature-item .feature-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
}

.feature-item .feature-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--leading-relaxed);
}

/* Features Visual */
.features-visual {
    position: relative;
}

.features-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    margin-bottom: var(--space-6);
    aspect-ratio: 4 / 3;
}

.features-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.features-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.feature-stat {
    text-align: center;
    padding: var(--space-4);
    background-color: var(--color-gray-100);
    border-radius: var(--radius-lg);
}

.feature-stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.feature-stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* ----- Portfolio Section ----- */
.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-10);
}

.filter-btn {
    padding: var(--space-2) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-400);
    background-color: transparent;
    border: 1px solid var(--color-gray-800);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-secondary);
    background-color: var(--color-primary-light);
    border-color: var(--color-gray-600);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image {
    position: relative;
    width: 100%;
    height: 100%;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-6);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.3) 50%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.portfolio-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-400);
    margin-bottom: var(--space-2);
}

.portfolio-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    margin-bottom: var(--space-1);
}

.portfolio-location {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.portfolio-cta {
    text-align: center;
    margin-top: var(--space-10);
}

/* ----- Testimonials Section ----- */
.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.testimonial-card {
    background-color: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-dark);
}

.testimonial-rating {
    display: flex;
    gap: var(--space-1);
    color: #fbbf24;
    margin-bottom: var(--space-6);
}

.testimonial-quote {
    font-size: var(--font-size-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text);
    margin-bottom: var(--space-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.author-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-bold);
    border-radius: 50%;
    flex-shrink: 0;
}

.author-name {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    color: var(--color-text);
    font-style: normal;
}

.author-role {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.author-location {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ----- Pricing Section ----- */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.pricing-card {
    position: relative;
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-gray-800);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: var(--color-gray-600);
}

.pricing-card--featured {
    border-color: var(--color-secondary);
    background-color: var(--color-primary-lighter);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-1) var(--space-4);
    background-color: var(--color-secondary);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.pricing-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    margin-bottom: var(--space-2);
}

.pricing-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

.pricing-price {
    text-align: center;
    margin-bottom: var(--space-8);
}

.price-currency,
.price-amount {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-black);
    color: var(--color-secondary);
}

.price-unit {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-top: var(--space-1);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-8);
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
    margin-bottom: var(--space-3);
}

.pricing-feature svg {
    flex-shrink: 0;
    color: var(--color-success);
}

.pricing-feature--disabled {
    color: var(--color-gray-600);
}

.pricing-feature--disabled svg {
    color: var(--color-gray-700);
}

.pricing-note {
    text-align: center;
    margin-top: var(--space-10);
    padding: var(--space-4);
    background-color: var(--color-primary-light);
    border-radius: var(--radius-lg);
}

.pricing-note p {
    display: inline-flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    max-width: 600px;
}

.pricing-note svg {
    flex-shrink: 0;
    margin-top: 2px;
}

/* ----- Contact Section ----- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
}

.contact-intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--space-8);
}

.contact-methods {
    display: grid;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.contact-value {
    font-size: var(--font-size-base);
    font-weight: var(--font-medium);
    color: var(--color-text);
    transition: color var(--transition-fast);
}

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

/* WhatsApp Button */
.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background-color: #25d366;
    color: var(--color-secondary);
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-8);
    transition: all var(--transition-base);
}

.whatsapp-btn:hover {
    background-color: #128c7e;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Map Container */
.map-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    aspect-ratio: 16 / 9;
    background-color: var(--color-gray-100);
    color: var(--color-gray-400);
}

.map-placeholder p {
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-600);
}

.map-placeholder span {
    font-size: var(--font-size-sm);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
}

.contact-form .form-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-6);
    color: var(--color-primary);
}

/* ============================================
   8. FOOTER
   ============================================ */
.footer {
    background-color: var(--color-primary);
    color: var(--color-secondary);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

.footer-logo {
    margin-bottom: var(--space-4);
}

.footer-logo .logo-icon {
    background-color: #000;
    color: var(--color-primary);
}

.footer-logo .logo-primary {
    color: var(--color-secondary);
}

.footer-logo .logo-secondary {
    color: var(--color-gray-400);
}

.footer-tagline {
    font-size: var(--font-size-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-3);
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    line-height: var(--leading-relaxed);
    max-width: 320px;
}

.footer-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
    color: var(--color-secondary);
}

.footer-nav li {
    margin-bottom: var(--space-3);
}

.footer-nav a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-800);
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

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

/* ============================================
   WHATSAPP FLOAT BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: var(--color-secondary);
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.whatsapp-float:hover {
    background-color: #128c7e;
    transform: scale(1.1);
}

/* ============================================
   GALLERY SECTION
   ============================================ */
.gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

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

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-4);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    color: var(--color-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
}

/* ============================================
   SOCIAL LINKS
   ============================================ */
.social-links {
    margin-bottom: var(--space-8);
}

.social-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.social-icons {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-primary);
    color: var(--color-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.social-link:hover {
    background-color: var(--color-gray-700);
    transform: translateY(-2px);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--color-primary-light);
    color: var(--color-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-700);
    transition: all var(--transition-base);
}

.footer-social-link:hover {
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

/* ============================================
   IMAGE PLACEHOLDERS
   ============================================ */
.image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, var(--color-gray-200) 0%, var(--color-gray-300) 100%);
    color: var(--color-gray-500);
}

.placeholder-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    text-align: center;
    padding: var(--space-4);
}

/* ============================================
   9. ANIMATIONS & EFFECTS
   ============================================ */

/* Fade In Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* Stagger Animation Delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

/* ============================================
   10. MEDIA QUERIES (RESPONSIVE)
   ============================================ */

/* Tablet (768px+) */
@media (min-width: 768px) {
    :root {
        --container-padding: var(--space-6);
    }
    
    .section {
        padding: var(--space-20) 0;
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-stats {
        gap: var(--space-10);
    }
    
    .stat-number,
    .stat-suffix {
        font-size: var(--font-size-4xl);
    }
    
    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Portfolio Grid */
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Gallery Grid */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item--large {
        grid-column: span 2;
    }
    
    .gallery-item--wide {
        grid-column: span 2;
    }
    
    /* Testimonials Grid */
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Pricing Grid */
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-card--featured {
        transform: scale(1.05);
    }
    
    /* Form Row */
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Footer Grid */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Footer Bottom */
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    :root {
        --container-padding: var(--space-8);
    }
    
    /* Navigation */
    .nav-menu {
        display: flex;
    }
    
    .mobile-toggle {
        display: none;
    }
    
    /* Hero Grid */
    .hero-grid {
        grid-template-columns: 1fr 400px;
    }
    
    /* About Grid */
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Services Grid */
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Portfolio Grid */
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Gallery Grid */
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .gallery-item--large {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .gallery-item--wide {
        grid-column: span 2;
    }
    
    /* Testimonials Grid */
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Contact Grid */
    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
    }
    
    /* Footer Grid */
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
    .hero-grid {
        grid-template-columns: 1fr 450px;
    }
    
    .hero-title {
        font-size: var(--font-size-6xl);
    }
}

/* ============================================
   11. ACCESSIBILITY
   ============================================ */

/* Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .scroll-line {
        animation: none;
    }
    
    .badge-dot {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --color-text-light: #000000;
    }
}

/* Print Styles */
@media print {
    .header,
    .scroll-indicator,
    .whatsapp-float,
    .hero-form-wrapper,
    .contact-form-wrapper {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
    
    .section {
        padding: var(--space-8) 0;
        page-break-inside: avoid;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}