/* ===== VARIABLES & RESET ===== */
:root {
    --blue-900: #0d2137;
    --blue-800: #122d4a;
    --blue-700: #173a5e;
    --blue-600: #1a4480;
    --blue-500: #2563a0;
    --blue-400: #3b82c4;
    --blue-300: #6ba3d6;
    --blue-200: #a3c7e8;
    --blue-100: #dbeaf7;
    --blue-50: #f0f6fc;
    --red-600: #c62828;
    --red-500: #d32f2f;
    --red-400: #e63946;
    --red-300: #ef5350;
    --red-100: #fce4e4;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 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);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

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

ul { list-style: none; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: #fff;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

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

.navbar-logo img {
    height: 56px;
    width: auto;
    mix-blend-mode: multiply;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.navbar-links a {
    padding: 8px 18px;
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.navbar-links a:hover {
    color: var(--blue-600);
    background: var(--blue-50);
}

.navbar-links a.active {
    color: var(--blue-600);
    background: var(--blue-100);
}

.navbar-links a.btn-primary {
    color: var(--white);
    background: var(--red-400);
    box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3);
}

.navbar-links a.btn-primary:hover {
    background: var(--red-500);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(230, 57, 70, 0.4);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: var(--blue-600);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(26, 68, 128, 0.3);
}

.btn-primary:hover {
    background: var(--blue-700);
    box-shadow: 0 4px 16px rgba(26, 68, 128, 0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--blue-600);
    border: 2px solid var(--blue-600);
}

.btn-outline:hover {
    background: var(--blue-600);
    color: var(--white);
    transform: translateY(-1px);
}

.btn-white {
    background: var(--white);
    color: var(--blue-600);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-red {
    background: var(--red-400);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3);
}

.btn-red:hover {
    background: var(--red-500);
    box-shadow: 0 4px 16px rgba(230, 57, 70, 0.4);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

/* Mobile menu toggle */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 50%, var(--blue-600) 100%);
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(230, 57, 70, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 196, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255,255,255,0.03) 0%, transparent 70%);
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.08) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(5deg); }
    66% { transform: translate(-20px, 20px) rotate(-3deg); }
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-content h1 span {
    background: linear-gradient(135deg, var(--red-400), var(--red-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--blue-200);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 520px;
}

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

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 480px;
    animation: slideUp 0.8s ease-out;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.hero-stat {
    text-align: center;
    padding: 20px;
    background: rgba(255,255,255,0.08);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.1);
}

.hero-stat .stat-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.hero-stat .stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
}

.hero-stat .stat-label {
    font-size: 0.85rem;
    color: var(--blue-300);
    margin-top: 4px;
}

/* ===== SECTION BASE ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--blue-100);
    color: var(--blue-600);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* ===== SERVICES ===== */
.services {
    background: var(--gray-50);
}

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

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--blue-600), var(--blue-400));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--blue-200);
}

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

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.service-icon.blue {
    background: var(--blue-100);
    color: var(--blue-600);
}

.service-icon.red {
    background: var(--red-100);
    color: var(--red-400);
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.65;
}

.service-features {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.service-features li svg {
    width: 16px;
    height: 16px;
    color: var(--blue-500);
    flex-shrink: 0;
}

/* ===== FEATURES ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-item {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.feature-item:hover {
    background: var(--blue-50);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.6rem;
    background: var(--blue-100);
    color: var(--blue-600);
    transition: var(--transition);
}

.feature-item:hover .feature-icon {
    background: var(--blue-600);
    color: var(--white);
    transform: scale(1.1);
}

.feature-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== WHY SECTION ===== */
.why-section {
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.why-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(230, 57, 70, 0.1);
}

.why-section .section-badge {
    background: rgba(255,255,255,0.15);
    color: var(--blue-200);
}

.why-section .section-header h2 {
    color: var(--white);
}

.why-section .section-header p {
    color: var(--blue-300);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
    z-index: 2;
}

.why-item {
    padding: 32px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    transition: var(--transition);
}

.why-item:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-4px);
}

.why-number {
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--red-400), var(--red-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.why-item h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.why-item p {
    font-size: 0.925rem;
    color: var(--blue-200);
    line-height: 1.65;
}

/* ===== CTA ===== */
.cta {
    text-align: center;
    background: var(--gray-50);
}

.cta-box {
    background: var(--white);
    border-radius: 20px;
    padding: 64px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    max-width: 800px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 1.1rem;
    color: var(--gray-500);
    margin-bottom: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ===== CONTACT PAGE ===== */
.page-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(230, 57, 70, 0.08);
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.page-hero p {
    font-size: 1.15rem;
    color: var(--blue-200);
    max-width: 520px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.contact-section {
    padding: 80px 0 100px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.contact-info-card:hover {
    border-color: var(--blue-200);
    background: var(--blue-50);
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--blue-600);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-info-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.contact-info-card p {
    font-size: 0.925rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.contact-form-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.contact-form-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--gray-800);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px rgba(37, 99, 160, 0.15);
}

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

.form-submit {
    margin-top: 8px;
}

.form-submit .btn {
    width: 100%;
    justify-content: center;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand img {
    height: 44px;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    font-size: 0.9rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }
.fade-in-delay-6 { transition-delay: 0.6s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content p { margin: 0 auto 40px; }
    .hero-buttons { justify-content: center; }
    .hero-visual { display: none; }
    .hero-content h1 { font-size: 2.8rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .navbar-links { display: none; }
    .navbar-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 16px 24px;
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-200);
    }
    .navbar-toggle { display: flex; }
    .hero-content h1 { font-size: 2.2rem; }
    .hero-content p { font-size: 1.05rem; }
    .services-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .section-header h2 { font-size: 2rem; }
    .contact-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .cta-box { padding: 40px 24px; }
    .cta-box h2 { font-size: 1.8rem; }
    .page-hero h1 { font-size: 2.2rem; }
}

@media (max-width: 480px) {
    .hero-content h1 { font-size: 1.8rem; }
    .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
    .hero-buttons { flex-direction: column; align-items: center; }
}