/* =====================================================
   AP CONSEIL & INGÉNIERIE - STYLES MODERNES V4
   Design épuré, dynamique et professionnel
   ===================================================== */

/* ===== VARIABLES ===== */
:root {
    --primary: #0052a3;
    --primary-dark: #003d7a;
    --primary-light: #0066cc;
    --accent: #00b4d8;
    --accent-light: #48cae4;
    --accent-dark: #0096c7;
    --success: #10b981;
    --warning: #f59e0b;
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-dark: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-dark) 100%);
    --gradient-light: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-width: 1280px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 28px rgba(0,0,0,0.12);
    --shadow-xl: 0 24px 48px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 40px rgba(0,180,216,0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

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

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

ul, ol {
    list-style: none;
}

/* ===== PAGE LOADER ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 30px;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.page-loader .loader-logo {
    max-width: 160px;
    filter: brightness(0) invert(1);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

.page-loader .loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255,255,255,0.15);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===== PAGE TRANSITIONS ===== */
.page-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    pointer-events: none;
    display: flex;
    overflow: hidden;
}

.page-transition-overlay .transition-panel {
    flex: 1;
    background: var(--gradient-primary);
    transform: translateY(100%);
}

.page-transition-overlay.animate-in .transition-panel {
    animation: slideIn 0.5s cubic-bezier(0.7, 0, 0.3, 1) forwards;
}

.page-transition-overlay.animate-out .transition-panel {
    animation: slideOut 0.5s cubic-bezier(0.7, 0, 0.3, 1) forwards;
}

.page-transition-overlay .transition-panel:nth-child(1) { animation-delay: 0s; }
.page-transition-overlay .transition-panel:nth-child(2) { animation-delay: 0.05s; }
.page-transition-overlay .transition-panel:nth-child(3) { animation-delay: 0.1s; }
.page-transition-overlay .transition-panel:nth-child(4) { animation-delay: 0.15s; }
.page-transition-overlay .transition-panel:nth-child(5) { animation-delay: 0.2s; }

@keyframes slideIn {
    0% { transform: translateY(100%); }
    100% { transform: translateY(0%); }
}

@keyframes slideOut {
    0% { transform: translateY(0%); }
    100% { transform: translateY(-100%); }
}

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn i {
    font-size: 14px;
    transition: var(--transition);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 82, 163, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 82, 163, 0.4);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.5);
}

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

.btn-lg {
    padding: 18px 36px;
    font-size: 16px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

/* ===== TOP BAR ===== */
.top-bar {
    background: var(--gray-900);
    color: var(--gray-300);
    font-size: 13px;
    padding: 10px 0;
}

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

.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.top-bar a, .top-bar span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-300);
}

.top-bar a:hover {
    color: var(--accent);
}

.top-bar-social {
    display: flex;
    gap: 8px;
}

.top-bar-social a {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    font-size: 12px;
}

.top-bar-social a:hover {
    background: var(--accent);
    color: var(--white);
    transform: translateY(-2px);
}

/* ===== HEADER ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.05);
    transition: var(--transition);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo img {
    height: 103px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
    background: rgba(0,82,163,0.05);
}

.nav-link i {
    font-size: 10px;
    transition: var(--transition);
}

.nav-item.has-dropdown:hover .nav-link i,
.nav-item.has-mega:hover .nav-link i {
    transform: rotate(180deg);
}

/* Mega Dropdown */
.has-mega .mega-dropdown {
    position: absolute;
    top: 100%;
    left: 100%;
    transform: translateX(-50%) translateY(10px);
    min-width: 1366px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 28px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border: 1px solid #0052a3;
}

.has-mega:hover .mega-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.mega-column {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mega-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    min-height: 99px;
    font-weight: 700;
    color: var(--primary);
    padding: 14px 16px;
    background: linear-gradient(135deg, rgba(0,82,163,0.08) 0%, rgba(0,180,216,0.08) 100%);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-left: 3px solid var(--primary);
}

.mega-title i {
    font-size: 16px;
    color: var(--accent);
}

.mega-title:hover {
    background: var(--gradient-primary);
    color: var(--white);
    border-left-color: var(--accent);
}

.mega-title:hover i {
    color: var(--white);
}

.mega-column a:not(.mega-title) {
    font-size: 14px;
    color: var(--gray-600);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.mega-column a:not(.mega-title):hover {
    background: var(--gray-50);
    color: var(--primary);
    padding-left: 22px;
}

/* Header Actions */
.header-actions .btn {
    padding: 12px 24px;
}

/* Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

/* ===== MOBILE MENU ===== */
.mobile-menu {
    display: none;
    position: fixed;
    top: calc(var(--header-height) + 43px);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height) - 43px);
    background: var(--white);
    padding: 24px;
    overflow-y: auto;
    z-index: 999;
    transform: translateX(-100%);
    transition: var(--transition);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
    text-transform: uppercase;
}

.mobile-dropdown {
    display: none;
    padding: 16px 0;
}

.mobile-nav-item.has-dropdown.active .mobile-dropdown {
    display: block;
}

.mobile-submenu-group {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-100);
}

.mobile-submenu-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.mobile-submenu-title {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 0;
    margin-bottom: 8px;
}

.mobile-submenu-title-link {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 0;
}

.mobile-submenu-group a:not(.mobile-submenu-title-link) {
    display: block;
    font-size: 14px;
    color: var(--gray-600);
    padding: 10px 0 10px 16px;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    max-height: 1000px;
}

.hero-slider {
    position: relative;
    height: 100%;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.slide.active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,40,80,0.92) 0%, rgba(0,82,163,0.8) 50%, rgba(0,150,199,0.7) 100%);
}

.slide .container {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.slide-content {
    max-width: 750px;
    color: var(--white);
}

.slide-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.slide-content h1 {
    font-size: 58px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.1;
}

.slide-content p {
    font-size: 19px;
    line-height: 1.8;
    margin-bottom: 36px;
    opacity: 0.95;
}

.slide-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Slider Navigation */
.slider-nav {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 24px;
}

.slider-prev, .slider-next {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.slider-prev:hover, .slider-next:hover {
    background: var(--white);
    color: var(--primary);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(255,255,255,0.4);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--white);
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(255,255,255,0.5);
}

/* ===== SECTIONS ===== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--gray-50);
}

.section-dark {
    background: var(--gradient-dark);
    color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(0,82,163,0.1) 0%, rgba(0,180,216,0.1) 100%);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-label i {
    font-size: 16px;
    color: var(--accent);
}

.section-title {
    font-size: 44px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.section-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    line-height: 1.8;
}

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

.service-card {
    background: var(--white);
    padding: 36px 28px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-icon i {
    font-size: 28px;
    color: var(--white);
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 15px;
    color: var(--gray-600);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.service-link:hover {
    gap: 14px;
    color: var(--accent);
}

/* ===== ABOUT SECTION ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-images {
    position: relative;
}

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

.about-image-secondary {
    position: absolute;
    bottom: -40px;
    right: -40px;
    width: 240px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 6px solid var(--white);
}

.about-experience {
    position: absolute;
    top: 40px;
    right: -30px;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 28px 32px;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.exp-number {
    display: block;
    font-size: 48px;
    font-weight: 800;
    font-family: var(--font-heading);
    line-height: 1;
}

.exp-text {
    font-size: 14px;
    opacity: 0.9;
}

.about-content .section-label {
    justify-content: flex-start;
}

.about-content .section-title {
    text-align: left;
    font-size: 40px;
}

.about-content p {
    font-size: 16px;
    color: var(--gray-600);
    margin-bottom: 18px;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 28px 0 36px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    padding: 12px 20px;
    background: var(--gray-50);
    border-radius: var(--radius-full);
}

.about-feature i {
    font-size: 18px;
    color: var(--accent);
}

/* ===== STATS SECTION ===== */
.stats-section {
    background: var(--gradient-primary);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.stats-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.03);
    border-radius: 50%;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    position: relative;
    z-index: 1;
}

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

.stat-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    backdrop-filter: blur(10px);
}

.stat-icon i {
    font-size: 28px;
}

.stat-number {
    font-size: 52px;
    font-weight: 800;
    font-family: var(--font-heading);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* ===== WHY SECTION ===== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.why-card {
    background: var(--white);
    padding: 40px 28px;
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
}

.why-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.why-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
    border-radius: 50%;
    transition: var(--transition);
}

.why-card:hover .why-icon {
    background: var(--gradient-primary);
    transform: scale(1.1);
}

.why-icon i {
    font-size: 36px;
    color: var(--primary);
    transition: var(--transition);
}

.why-card:hover .why-icon i {
    color: var(--white);
}

.why-card h3 {
    font-size: 20px;
    margin-bottom: 14px;
}

.why-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 80px 0;
}

.cta-card {
    background: var(--gradient-primary);
    padding: 80px;
    border-radius: var(--radius-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
}

.cta-card::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

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

.cta-card h2 {
    color: var(--white);
    font-size: 40px;
    margin-bottom: 18px;
}

.cta-card p {
    color: rgba(255,255,255,0.9);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== PAGE HEADER (ANIMATED) ===== */
.page-header {
    position: relative;
    padding: 140px 0 100px;
    color: var(--white);
    text-align: center;
    overflow: hidden;
    background: var(--gradient-dark);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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='0.03'%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");
    animation: patternMove 30s linear infinite;
}

@keyframes patternMove {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

.page-header .floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    pointer-events: none;
}

.page-header .shape {
    position: absolute;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.page-header .shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -50px;
    animation: float 8s ease-in-out infinite;
}

.page-header .shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: 10%;
    animation: float 6s ease-in-out infinite reverse;
}

.page-header .shape-3 {
    width: 150px;
    height: 150px;
    top: 30%;
    left: -50px;
    animation: float 10s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(10deg); }
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 14px;
    margin-bottom: 28px;
    opacity: 0.9;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.page-header h1 {
    font-size: 54px;
    color: var(--white);
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

.page-header p {
    font-size: 19px;
    max-width: 650px;
    margin: 0 auto;
    opacity: 0.9;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s both;
}

/* ===== PAGE WITH SIDEBAR LAYOUT ===== */
.page-with-sidebar {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 50px;
    align-items: start;
}

.page-main-content {
    min-width: 0;
}

/* ===== SIDEBAR ===== */
.sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-widget {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 24px;
    border: 1px solid var(--gray-100);
}

.sidebar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-title i {
    color: var(--primary);
}

/* Sidebar Menu */
.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-menu-item {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sidebar-menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.sidebar-menu-link:hover {
    background: var(--primary);
    color: var(--white);
}

.sidebar-menu-link.active {
    background: var(--gradient-primary);
    color: var(--white);
}

.sidebar-menu-link i {
    font-size: 18px;
    width: 24px;
}

/* Sidebar Submenu */
.sidebar-submenu {
    margin-top: 8px;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-submenu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.sidebar-submenu a:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.sidebar-submenu a.active {
    background: rgba(0, 82, 163, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.sidebar-submenu a i {
    font-size: 6px;
    color: var(--gray-400);
}

/* Sidebar Contact Card */
.sidebar-contact {
    background: var(--gradient-primary);
    color: var(--white);
    text-align: center;
}

.sidebar-contact .sidebar-title {
    color: var(--white);
    border-bottom-color: rgba(255,255,255,0.2);
    justify-content: center;
}

.sidebar-contact .sidebar-title i {
    color: var(--white);
}

.sidebar-contact p {
    font-size: 15px;
    opacity: 0.9;
    margin-bottom: 24px;
    line-height: 1.7;
}

.sidebar-contact .btn {
    width: 100%;
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.sidebar-contact .btn:hover {
    background: transparent;
    color: var(--white);
}

/* ===== CONTENT STYLES ===== */
.content-block {
    margin-bottom: 48px;
}

.content-block h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--gray-900);
}

.content-block h3 {
    font-size: 24px;
    margin-bottom: 18px;
    color: var(--gray-800);
}

.content-block p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 18px;
}

.content-block ul {
    margin-bottom: 24px;
}

.content-block ul li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 12px 0;
    font-size: 16px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}

.content-block ul li:last-child {
    border-bottom: none;
}

.content-block ul li i {
    color: var(--accent);
    margin-top: 4px;
    font-size: 18px;
}

.content-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
}

/* Feature List */
.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 28px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 22px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-item:hover {
    background: var(--white);
    border-color: var(--primary);
    transform: translateX(5px);
}

.feature-item i {
    color: var(--primary);
    font-size: 20px;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 10px;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 16px 20px;
    font-size: 15px;
    font-family: var(--font-body);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: var(--white);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0,82,163,0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ===== EVENTS SECTION ===== */
.events-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.event-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
}

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

.event-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.event-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.event-card:hover .event-image img {
    transform: scale(1.1);
}

.event-date {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.event-date .day {
    display: block;
    font-size: 28px;
    font-weight: 800;
    line-height: 1;
}

.event-date .month {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.event-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent);
    color: var(--white);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.event-content {
    padding: 28px;
}

.event-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--gray-500);
}

.event-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.event-meta i {
    color: var(--primary);
}

.event-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
    line-height: 1.3;
}

.event-content p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 20px;
}

/* ===== CV SECTION ===== */
.cv-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.cv-content h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.cv-content p {
    font-size: 17px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.cv-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 32px 0;
}

.cv-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.cv-feature-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 20px;
}

.cv-feature-text h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.cv-feature-text p {
    font-size: 14px;
    color: var(--gray-500);
    margin: 0;
}

.cv-form-card {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
}

.cv-form-card h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.cv-form-card .form-subtitle {
    font-size: 15px;
    color: var(--gray-500);
    margin-bottom: 28px;
}

/* ===== CONTACT SECTION MODERN ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-info-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.contact-info-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 24px;
    flex-shrink: 0;
}

.contact-info-card h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.contact-info-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-info-card a {
    color: var(--primary);
    font-weight: 500;
}

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

.contact-form-card {
    background: var(--white);
    padding: 48px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
}

.contact-form-card h3 {
    font-size: 28px;
    margin-bottom: 8px;
}

.contact-form-card .form-subtitle {
    font-size: 15px;
    color: var(--gray-500);
    margin-bottom: 32px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
}

.footer-main {
    padding: 80px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 48px;
}

.footer-brand .logo img {
    height: 48px;
    filter: brightness(0) invert(1);
    margin-bottom: 24px;
}

.footer-desc {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 28px;
}

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

.footer-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    transition: var(--transition);
    font-size: 16px;
}

.footer-social a:hover {
    background: var(--accent);
    color: var(--white);
    transform: translateY(-4px);
}

.footer-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 28px;
}

.footer-links a {
    display: block;
    font-size: 15px;
    color: var(--gray-400);
    padding: 10px 0;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 8px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 15px;
}

.footer-contact i {
    color: var(--accent);
    margin-top: 4px;
    font-size: 18px;
}

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

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

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

.footer-bottom p {
    font-size: 14px;
}

.footer-legal {
    display: flex;
    gap: 28px;
}

.footer-legal a {
    font-size: 14px;
    color: var(--gray-400);
}

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

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 100;
    font-size: 18px;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

/* ===== REVEAL ANIMATIONS ===== */
[data-reveal] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .services-grid, .why-grid, .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-with-sidebar {
        grid-template-columns: 1fr 300px;
        gap: 40px;
    }
    
    .has-mega .mega-dropdown {
        min-width: 700px;
    }
    
    .events-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .nav, .header-actions {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .about-grid, .cv-hero, .contact-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .slide-content h1 {
        font-size: 42px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .page-with-sidebar {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: relative;
        top: 0;
        order: -1;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 42px;
    }
}

@media (max-width: 768px) {
    .top-bar-inner {
        flex-direction: column;
        gap: 10px;
    }
    
    .top-bar-left, .top-bar-right {
        gap: 16px;
    }
    
    .hero {
        height: 90vh;
        min-height: 600px;
    }
    
    .slide-content h1 {
        font-size: 34px;
    }
    
    .services-grid, .why-grid, .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .cta-card {
        padding: 50px 28px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .about-image-secondary, .about-experience {
        display: none;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .page-header {
        padding: 100px 0 70px;
    }
    
    .page-header h1 {
        font-size: 36px;
    }
    
    .sidebar-widget {
        padding: 24px;
    }
    
    .cv-form-card, .contact-form-card {
        padding: 28px;
    }
}

@media (max-width: 480px) {
    .slide-buttons {
        flex-direction: column;
    }
    
    .btn-lg {
        padding: 16px 28px;
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 30px;
    }
    
    .contact-form-card h3, .cv-content h2 {
        font-size: 26px;
    }
}