/* ==========================================================================
   CSS VARIABLES - FLAWLESS & STRUCTURED DESIGN (WITH ELEGANT ANIMATIONS)
   ========================================================================== */
:root {
    --color-bg: #ffffff;
    --color-bg-light: #f9fafb;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    --color-primary: #000000;
    --color-primary-hover: #374151;
    --color-border: #e5e7eb;
    
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --container-width: 1200px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    
    --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    background-color: var(--color-bg); color: var(--color-text);
    font-family: var(--font-main); line-height: 1.6;
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--color-text); }
h1 { font-size: clamp(3rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
p { color: var(--color-text-muted); font-size: 1.125rem; margin-bottom: 1rem; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container { max-width: var(--container-width); margin: 0 auto; padding: 0 var(--space-md); }
.section { padding: var(--space-xl) 0; }
.bg-light { background-color: var(--color-bg-light); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.text-center { text-align: center; }
.w-100 { width: 100%; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.5rem; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.875rem 1.75rem; font-weight: 600; font-size: 1rem;
    border-radius: var(--radius-sm); transition: var(--transition); cursor: pointer; border: 1px solid transparent;
}
.btn-sm { padding: 0.6rem 1.2rem; font-size: 0.9rem; }
.btn-primary { background-color: var(--color-primary); color: #fff; }
.btn-primary:hover { 
    background-color: var(--color-primary-hover); 
    transform: translateY(-3px) scale(1.02); 
    box-shadow: var(--shadow-md); 
}
.btn-secondary { background-color: var(--color-bg); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { 
    background-color: var(--color-bg-light); 
    border-color: var(--color-text);
    transform: translateY(-3px);
}

.navbar {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(0,0,0,0.05); transition: var(--transition);
    height: 80px; display: flex; align-items: center;
}
.navbar.scrolled {
    height: 70px;
    box-shadow: var(--shadow-sm);
}
.nav-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.brand { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.05em; transition: var(--transition); }
.brand:hover { opacity: 0.7; }
.desktop-menu { display: flex; gap: 2.5rem; }
.nav-link { font-weight: 500; font-size: 0.95rem; color: var(--color-text-muted); position: relative; }
.nav-link::after, .nav-link.active::after {
    content: ''; position: absolute; width: 0; height: 2px;
    bottom: -4px; left: 0; background-color: var(--color-text); transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--color-text); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 1rem; }

.hamburger { display: none; background: none; border: none; cursor: pointer; width: 30px; height: 24px; position: relative; z-index: 1002; }
.bar { width: 100%; height: 2px; background-color: var(--color-text); position: absolute; left: 0; transition: 0.4s ease; }
.bar-1 { top: 6px; }
.bar-2 { bottom: 6px; }
.hamburger.open .bar-1 { transform: translateY(5px) rotate(45deg); }
.hamburger.open .bar-2 { transform: translateY(-5px) rotate(-45deg); }

.mobile-menu {
    position: fixed; inset: 0; background-color: var(--color-bg); z-index: 1001;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    opacity: 0; pointer-events: none; transition: 0.4s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: auto; }
.mobile-nav-links { display: flex; flex-direction: column; gap: 1.5rem; text-align: center; }
.mobile-nav-links a:not(.btn) { font-size: 2rem; font-weight: 700; color: var(--color-text); }

.hero { padding-top: 140px; padding-bottom: 6rem; overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.tagline { display: inline-block; padding: 0.4rem 1rem; background: var(--color-bg-light); border: 1px solid var(--color-border); border-radius: 100px; font-weight: 600; font-size: 0.875rem; margin-bottom: 1.5rem; color: var(--color-text-muted); }
.hero h1 { margin-bottom: 1.5rem; }
.hero p { font-size: 1.25rem; margin-bottom: 2.5rem; max-width: 500px; }
.hero-btns { display: flex; gap: 1rem; }

.browser-mockup {
    border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden;
    box-shadow: var(--shadow-lg); background: #fff;
}
.browser-header { padding: 12px 16px; background: var(--color-bg-light); border-bottom: 1px solid var(--color-border); display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f56; } .dot.yellow { background: #ffbd2e; } .dot.green { background: #27c93f; }
.browser-mockup img { width: 100%; display: block; }

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}
.float-anim { animation: float 6s ease-in-out infinite; }

.section-header { max-width: 700px; margin: 0 auto 4rem; }
.feature-card {
    background: var(--color-bg); padding: 2.5rem; border-radius: var(--radius-md);
    border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); transition: var(--transition);
}
.feature-card:hover { 
    box-shadow: var(--shadow-hover); 
    border-color: #d1d5db; 
    transform: translateY(-8px); 
}
.icon-box {
    width: 48px; height: 48px; background: var(--color-bg-light); border: 1px solid var(--color-border);
    border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; color: var(--color-text); margin-bottom: 1.5rem;
    transition: var(--transition);
}
.feature-card:hover .icon-box { background: var(--color-primary); color: #fff; }

.stats-banner {
    display: flex; justify-content: space-around; background: var(--color-primary); color: #fff;
    padding: 3rem; border-radius: var(--radius-md); text-align: center;
}
.stat h4 { display: inline-block; color: #fff; font-size: 3.5rem; margin-bottom: 0.5rem; }
.stat span { font-size: 2rem; font-weight: 700; }
.stat p { color: #9ca3af; margin: 0; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.9rem; }

.page-header { padding: 160px 0 6rem; border-bottom: 1px solid var(--color-border); }
.page-header h1 { margin-bottom: 1rem; }
.page-header p { max-width: 600px; margin: 0 auto; }

.service-list { display: flex; flex-direction: column; gap: 6rem; }
.service-row { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.service-row.reverse .service-content { order: 2; }
.service-row.reverse .service-img { order: 1; }
.service-tag { font-family: monospace; color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 1rem; text-transform: uppercase; }
.check-list { margin-top: 1.5rem; }
.check-list li { margin-bottom: 0.75rem; display: flex; align-items: center; gap: 10px; font-weight: 500; color: var(--color-text); }
.check-list i { color: #10b981; }
.service-img img { border-radius: var(--radius-md); border: 1px solid var(--color-border); box-shadow: var(--shadow-md); transition: var(--transition); }

.hover-lift { transition: var(--transition); }
.hover-lift:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-radius: var(--radius-md); }

.portfolio-card {
    display: block; border-radius: var(--radius-md); border: 1px solid var(--color-border);
    overflow: hidden; transition: var(--transition); background: var(--color-bg);
}
.portfolio-card:hover { 
    box-shadow: var(--shadow-hover); 
    transform: translateY(-8px); 
    border-color: #d1d5db;
}
.portfolio-img-box { overflow: hidden; aspect-ratio: 16/10; border-bottom: 1px solid var(--color-border); }
.portfolio-img-box img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1); }
.portfolio-card:hover .portfolio-img-box img { transform: scale(1.08); }
.portfolio-text { padding: 1.5rem; }
.portfolio-text h3 { margin-bottom: 0.25rem; font-size: 1.25rem; }
.portfolio-text p { margin: 0; font-size: 0.9rem; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.company-details { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--color-border); }
.company-details ul li { margin-bottom: 0.5rem; color: var(--color-text-muted); }
.company-details strong { color: var(--color-text); }

.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 4rem; }
.info-block { display: flex; gap: 1.5rem; margin-bottom: 2rem; padding: 1.5rem; border: 1px solid transparent; border-radius: var(--radius-md); transition: var(--transition); }
.info-block i { width: 40px; height: 40px; background: var(--color-bg-light); border: 1px solid var(--color-border); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; transition: var(--transition); }
.info-block h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.info-block a { color: var(--color-text-muted); } .info-block a:hover { color: var(--color-text); }
.info-block.hover-lift:hover { background: var(--color-bg); border-color: var(--color-border); }
.info-block.hover-lift:hover i { background: var(--color-primary); color: #fff; }

.clean-form { background: var(--color-bg-light); padding: 3rem; border-radius: var(--radius-md); border: 1px solid var(--color-border); transition: var(--transition); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.input-group { margin-bottom: 1.5rem; }
.input-group label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 0.5rem; }
.input-group input, .input-group textarea {
    width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
    font-family: var(--font-main); font-size: 1rem; outline: none; transition: var(--transition);
}
.input-group input:focus, .input-group textarea:focus { border-color: var(--color-text); box-shadow: 0 0 0 2px rgba(0,0,0,0.05); }

.doc-container { max-width: 800px; }
.doc-container h2 { margin-top: 2.5rem; font-size: 1.5rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.5rem; margin-bottom: 1rem; }

.footer { background: var(--color-bg-light); border-top: 1px solid var(--color-border); padding: 5rem 0 2rem; margin-top: 4rem; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 4rem; }
.footer-brand { font-size: 1.5rem; font-weight: 800; margin-bottom: 1rem; }
.footer-desc { font-size: 0.95rem; max-width: 300px; }
.footer-col h4 { font-size: 1rem; margin-bottom: 1.5rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); }
.footer-col ul li { margin-bottom: 0.75rem; }
.footer-col a { color: var(--color-text); font-weight: 500; font-size: 0.95rem; }
.footer-col a:hover { color: var(--color-primary-hover); text-decoration: underline; }
.social-icons { display: flex; gap: 1rem; }
.social-icons a { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--color-border); border-radius: 50%; background: var(--color-bg); }
.social-icons a:hover { background: var(--color-text); color: #fff; border-color: var(--color-text); transform: translateY(-3px); }
.footer-bottom { border-top: 1px solid var(--color-border); padding-top: 2rem; display: flex; justify-content: space-between; font-size: 0.875rem; color: var(--color-text-muted); }

.fade-in-up { opacity: 0; transform: translateY(30px); transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-in-up.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; } .delay-2 { transition-delay: 0.3s; }

@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .hero-inner, .service-row, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
    .hero { padding-top: 120px; text-align: center; }
    .hero p { margin: 0 auto 2.5rem; }
    .hero-btns { justify-content: center; }
    .service-row.reverse .service-content { order: 1; }
    .service-row.reverse .service-img { order: 2; }
    .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .desktop-menu, .nav-actions .btn { display: none; }
    .hamburger { display: block; }
    .grid-3, .grid-2, .form-row { grid-template-columns: 1fr; }
    .stats-banner { flex-direction: column; gap: 2rem; }
    .footer-top { grid-template-columns: 1fr; gap: 2.5rem; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    h1 { font-size: 2.5rem; }
    .section { padding: 4rem 0; }
}