/* ==========================================================================
   BTPI GROUP — Premium Construction Company Website
   Design System & Global Styles
   ========================================================================== */

/* ---- CSS Custom Properties ---- */
:root {
    /* Colors */
    --color-primary:     #292f51;
    --color-secondary:   #3a4070;
    --color-accent:      #ef991b;
    --color-accent-light:#f5b94e;
    --color-accent-dark: #d4850f;
    --color-dark:        #0d0d0d;
    --color-gray-900:    #1a1a2e;
    --color-gray-800:    #2d2d44;
    --color-gray-700:    #4a4a5a;
    --color-gray-600:    #6b6b7b;
    --color-gray-500:    #8a8a9a;
    --color-gray-400:    #a8a8b8;
    --color-gray-300:    #d0d0dc;
    --color-gray-200:    #e8e8f0;
    --color-gray-100:    #f4f4f8;
    --color-white:       #ffffff;
    --color-light-bg:    #f7f8fc;
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --container-width: 1280px;
    --container-padding: 24px;
    
    /* Transitions */
    --transition-fast:   0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow:   0.8s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md:  0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg:  0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl:  0 20px 60px rgba(0, 0, 0, 0.15);
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.section-label::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 2px;
    background: var(--color-accent);
}

.section-label.light {
    color: var(--color-accent-light);
}

.section-label.light::before {
    background: var(--color-accent-light);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.text-accent {
    color: var(--color-accent);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-gray-600);
    max-width: 600px;
    line-height: 1.8;
}

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

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-header .section-desc {
    margin: 0 auto;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(239, 153, 27, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

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

.btn-white:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

.btn i {
    font-size: 0.85em;
    transition: transform var(--transition-base);
}

.btn:hover i.fa-arrow-right {
    transform: translateX(4px);
}

/* ==========================================================================
   HEADER / NAVIGATION
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition-smooth);
}

.site-header.scrolled {
    background: rgba(41, 47, 81, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
    z-index: 1001;
}

.logo-icon {
    display: flex;
    width: 40px;
    height: 40px;
    color: var(--color-accent);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-white);
}

.logo-group {
    font-family: var(--font-body);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 6px;
    color: var(--color-accent);
    margin-top: 2px;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.5px;
    transition: var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--color-accent);
    transition: transform var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* Header CTA */
.btn-header {
    padding: 10px 28px;
    font-size: 0.82rem;
    background: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
    border-radius: var(--radius-sm);
}

.btn-header:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-base);
    transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(135deg, #292f51 0%, #3a4070 40%, #1e2445 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(239, 153, 27, 0.08) 0%, transparent 70%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(180deg, rgba(41, 47, 81, 0.3) 0%, rgba(41, 47, 81, 0.1) 50%, rgba(41, 47, 81, 0.6) 100%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
    padding-top: 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: rgba(239, 153, 27, 0.1);
    border: 1px solid rgba(239, 153, 27, 0.25);
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-accent-light);
    letter-spacing: 1px;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 28px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    margin-bottom: 48px;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    right: 60px;
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.4);
}

.scroll-text {
    font-size: 0.7rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    writing-mode: vertical-rl;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--color-accent);
    animation: scroll-line-anim 2s infinite;
}

@keyframes scroll-line-anim {
    0% { top: -50%; }
    100% { top: 120%; }
}

/* ==========================================================================
   CERTIFICATIONS BAR
   ========================================================================== */
.certifications-bar {
    background: var(--color-primary);
    padding: 20px 0;
    overflow: hidden;
    border-bottom: 1px solid rgba(239, 153, 27, 0.15);
}

.cert-track {
    display: flex;
    gap: 48px;
    animation: scroll-certs 20s linear infinite;
    width: max-content;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
}

.cert-item i {
    color: var(--color-accent);
    font-size: 0.9rem;
}

@keyframes scroll-certs {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.section-about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-gray-600);
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--color-primary);
}

.about-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}

.value-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.value-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(239, 153, 27, 0.1), rgba(239, 153, 27, 0.05));
    border-radius: var(--radius-sm);
    color: var(--color-accent);
    font-size: 1rem;
}

.value-item strong {
    display: block;
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.value-item span {
    font-size: 0.78rem;
    color: var(--color-gray-500);
    line-height: 1.5;
}

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

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

.about-image-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-placeholder {
    width: 100%;
    height: 480px;
    background: linear-gradient(135deg, #3a4070, #292f51);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(239, 153, 27, 0.2);
    font-size: 5rem;
}

.image-placeholder.small {
    height: 200px;
    font-size: 3rem;
}

.about-image-accent {
    position: absolute;
    bottom: -30px;
    left: -40px;
    width: 220px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--color-white);
}

.about-experience-badge {
    position: absolute;
    top: -20px;
    right: -20px;
    background: var(--color-accent);
    color: var(--color-primary);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: 0 10px 40px rgba(239, 153, 27, 0.3);
}

.exp-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.exp-text {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-top: 6px;
    line-height: 1.3;
}

/* ==========================================================================
   STATS SECTION
   ========================================================================== */
.section-stats {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.stats-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #292f51 0%, #3a4070 50%, #1e2445 100%);
}

.stats-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(239, 153, 27, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(239, 153, 27, 0.05) 0%, transparent 50%);
}

.section-stats .container {
    position: relative;
    z-index: 1;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    padding: 40px 20px;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
}

.stat-line {
    width: 40px;
    height: 2px;
    background: rgba(239, 153, 27, 0.3);
    margin: 20px auto 0;
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.section-services {
    background: var(--color-light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--color-white);
    padding: 44px 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(239, 153, 27, 0.1), rgba(239, 153, 27, 0.02));
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 1.4rem;
    margin-bottom: 24px;
    transition: var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--color-accent);
    color: var(--color-primary);
}

.service-number {
    position: absolute;
    top: 24px;
    right: 28px;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-300);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
}

.service-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-gray-600);
    margin-bottom: 24px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    transition: var(--transition-base);
}

.service-link:hover {
    color: var(--color-accent);
    gap: 12px;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.section-projects {
    background: var(--color-white);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 56px;
}

.project-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition-smooth);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.project-image {
    position: relative;
    overflow: hidden;
}

.project-placeholder {
    height: 260px;
    background: linear-gradient(135deg, #3a4070, #292f51);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(239, 153, 27, 0.15);
    font-size: 3rem;
    transition: var(--transition-slow);
}

.project-card:hover .project-placeholder {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.project-category {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(41, 47, 81, 0.8);
    backdrop-filter: blur(10px);
    color: var(--color-accent-light);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 50px;
}

.project-info {
    padding: 24px 28px;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.project-desc {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.section-cta {
    text-align: center;
}

/* ==========================================================================
   BRANCHES / IMPLANTATIONS SECTION
   ========================================================================== */
.section-branches {
    background: var(--color-light-bg);
}

.branches-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 80px;
    align-items: start;
}

.branches-summary {
    display: flex;
    gap: 32px;
    margin-top: 40px;
}

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

.branch-stat-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.branch-stat-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-gray-500);
    margin-top: 6px;
    letter-spacing: 0.5px;
}

.branches-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.branch-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition-base);
}

.branch-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.branch-type-indicator {
    width: 4px;
    height: 36px;
    border-radius: 2px;
    flex-shrink: 0;
}

.branch-type-indicator.hq {
    background: var(--color-accent);
}

.branch-type-indicator.regional {
    background: var(--color-secondary);
}

.branch-type-indicator.agency {
    background: var(--color-gray-400);
}

.branch-info {
    flex: 1;
    min-width: 0;
}

.branch-city {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.3;
}

.branch-region {
    font-size: 0.72rem;
    color: var(--color-gray-500);
}

.branch-type {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--color-gray-500);
    white-space: nowrap;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.section-cta-block {
    padding: 100px 0 120px;
    background: var(--color-white);
}

.cta-card {
    position: relative;
    background: linear-gradient(135deg, #292f51 0%, #3a4070 50%, #1e2445 100%);
    border-radius: var(--radius-xl);
    padding: 80px;
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--color-white);
    margin-bottom: 20px;
}

.cta-text {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-decoration {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 40%;
    overflow: hidden;
}

.cta-deco-line {
    position: absolute;
    width: 300px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(239, 153, 27, 0.15), transparent);
    transform: rotate(-30deg);
}

.cta-deco-line:nth-child(1) { top: 20%; right: -50px; }
.cta-deco-line:nth-child(2) { top: 50%; right: -20px; }
.cta-deco-line:nth-child(3) { top: 80%; right: -80px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.6);
}

.footer-top {
    padding: 80px 0 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    width: 36px;
    height: 36px;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    transition: var(--transition-base);
}

.footer-social a:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
}

.footer-heading {
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: 24px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 6px;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.88rem;
}

.footer-contact i {
    color: var(--color-accent);
    font-size: 0.85rem;
    margin-top: 4px;
}

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

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 0.8rem;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    transition: var(--transition-base);
}

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

/* ==========================================================================
   ERROR PAGE
   ========================================================================== */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    text-align: center;
    padding-top: 80px;
}

.error-code {
    font-family: var(--font-heading);
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 16px;
}

.error-content h2 {
    font-size: 1.8rem;
    color: var(--color-white);
    margin-bottom: 12px;
}

.error-content p {
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 32px;
}

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

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .branches-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .branches-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-grid {
        gap: 48px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

/* Mobile Landscape */
@media (max-width: 768px) {
    :root {
        --section-padding: 64px;
    }
    
    /* Mobile Navigation */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(41, 47, 81, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 8px;
        transition: right var(--transition-smooth);
        z-index: 1000;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.5rem;
        padding: 16px;
    }
    
    .btn-header {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    /* Hero */
    .hero-content {
        padding-top: 40px;
    }
    
    .hero-scroll {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        text-align: center;
        justify-content: center;
    }
    
    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .about-values {
        grid-template-columns: 1fr;
    }
    
    .about-image-accent {
        left: -10px;
        bottom: -20px;
        width: 160px;
    }
    
    .about-experience-badge {
        right: -10px;
        top: -10px;
    }
    
    /* Stats */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    /* Branches */
    .branches-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .branches-summary {
        gap: 20px;
    }
    
    /* CTA */
    .cta-card {
        padding: 48px 32px;
        border-radius: var(--radius-lg);
    }
    
    .cta-decoration {
        display: none;
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .cta-actions .btn {
        text-align: center;
        justify-content: center;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    :root {
        --section-padding: 48px;
    }
    
    .hero-badge {
        font-size: 0.68rem;
        padding: 6px 14px;
    }
    
    .branches-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        padding: 24px 12px;
    }
    
    .image-placeholder {
        height: 320px;
    }
    
    .project-placeholder {
        height: 200px;
    }
}

/* ==========================================================================
   ANIMATIONS & UTILITIES
   ========================================================================== */

/* Fade animations for AOS override */
[data-aos="fade-up"] {
    transform: translateY(30px);
}

/* Smooth scroll offset for fixed header */
section[id] {
    scroll-margin-top: 80px;
}

/* Selection Color */
::selection {
    background: var(--color-accent);
    color: var(--color-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-dark);
}