/* ==========================================
   CSS Variables & Reset
   ========================================== */
:root {
    /* Primary Colors - Blue & Red Theme */
    --primary-blue: #1a365d;
    --primary-blue-light: #2c5282;
    --primary-blue-dark: #0f2744;
    --primary-red: #c53030;
    --primary-red-light: #e53e3e;
    --primary-red-dark: #9b2c2c;
    
    /* Accent Colors */
    --accent-blue: #3182ce;
    --accent-red: #f56565;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;
    
    /* Typography */
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --section-padding: 6rem;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --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 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--primary-red);
    margin-bottom: 1rem;
    position: relative;
    padding-left: 2rem;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 2px;
    background: var(--primary-red);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 400;
    color: var(--primary-blue-dark);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(197, 48, 48, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(197, 48, 48, 0.4);
}

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

.btn-primary:hover i {
    transform: translateX(3px);
}

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

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

.btn-full {
    width: 100%;
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.header.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--primary-red);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--primary-blue-dark);
}

.logo-accent {
    color: var(--primary-red);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-red);
    transition: width var(--transition-base);
}

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

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

.nav-toggle {
    display: none;
    width: 32px;
    height: 24px;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--primary-blue-dark);
    transition: all var(--transition-base);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before,
.hamburger::after {
    content: '';
    left: 0;
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    overflow: hidden;
    background: linear-gradient(145deg, var(--gray-50) 0%, var(--white) 50%, var(--gray-100) 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
}

.hero-shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(26, 54, 93, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(197, 48, 48, 0.06) 0%, transparent 70%);
    bottom: -100px;
    left: -50px;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(49, 130, 206, 0.05) 0%, transparent 70%);
    top: 40%;
    left: 30%;
    animation: float 18s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(20px, -20px); }
    50% { transform: translate(-10px, 20px); }
    75% { transform: translate(15px, 10px); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title-line {
    display: block;
    color: var(--primary-blue-dark);
}

.hero-title-accent {
    color: var(--primary-red);
}

.hero-text {
    font-size: 1.125rem;
    color: var(--gray-500);
    margin-bottom: 2rem;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    max-width: 320px;
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-red) 100%);
}

.hero-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.hero-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--primary-blue-dark);
    margin-bottom: 0.5rem;
}

.hero-card p {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-400);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color var(--transition-base);
}

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

.scroll-indicator i {
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

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

/* ==========================================
   About Section
   ========================================== */
.about {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.about-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(197, 48, 48, 0.1) 0%, rgba(197, 48, 48, 0.05) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-red);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.about-feature-content h4 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: var(--primary-blue-dark);
    margin-bottom: 0.25rem;
}

.about-feature-content p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.about-pattern {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: var(--radius-xl);
    position: relative;
}

.about-pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(45deg, rgba(255,255,255,0.05) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.05) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.05) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.05) 75%);
    background-size: 30px 30px;
    border-radius: inherit;
}

.about-icon-grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 2rem;
}

.about-icon-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    transition: all var(--transition-base);
}

.about-icon-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

/* ==========================================
   Services Section
   ========================================== */
.services {
    padding: var(--section-padding) 0;
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--primary-red) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

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

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--primary-blue-dark);
    margin-bottom: 0.75rem;
}

.service-text {
    color: var(--gray-500);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-red);
    font-size: 0.875rem;
    font-weight: 500;
    transition: gap var(--transition-base);
}

.service-card:hover .service-link {
    gap: 0.75rem;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-text {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.125rem;
    flex-shrink: 0;
}

.contact-item-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 0.25rem;
}

.contact-item-value {
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.contact-form-wrapper {
    background: var(--gray-50);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

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

/* ==========================================
   Footer
   ========================================== */
.footer {
    padding: 2rem 0;
    background: var(--primary-blue-dark);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-logo .logo-icon {
    color: var(--primary-red-light);
}

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

.footer-logo .logo-accent {
    color: var(--primary-red-light);
}

.footer-copyright {
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-visual {
        order: -1;
    }
    
    .about-image-wrapper {
        max-width: 350px;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem;
    }
    
    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 1.5rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-link {
        display: block;
        padding: 0.5rem 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .hero {
        min-height: auto;
        padding: 8rem 0 4rem;
    }
    
    .hero-visual {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
}

/* ==========================================
   Animations on Scroll
   ========================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 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; }