/* ===== WebKutak Shared Styles ===== */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1629;
    --bg-card: #131a2e;
    --bg-card-hover: #182040;
    --blue-primary: #4a7bff;
    --blue-light: #6b9aff;
    --blue-glow: rgba(74, 123, 255, 0.15);
    --blue-glow-strong: rgba(74, 123, 255, 0.3);
    --cyan: #38bdf8;
    --cyan-glow: rgba(56, 189, 248, 0.15);
    --text-primary: #e8ecf4;
    --text-secondary: #8892a8;
    --text-muted: #5a6478;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(74, 123, 255, 0.3);
    --font-display: 'Sora', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: 1rem 0; transition: all 0.4s ease; }
header.scrolled { background: rgba(10,14,26,0.85); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 0.75rem 0; }
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 0.6rem; }
.logo img { height: 100px; width: auto; }
.nav-desktop { display: none; }
@media(min-width:768px) { .nav-desktop { display: flex; align-items: center; gap: 2.5rem; } }
.nav-desktop a { font-family: var(--font-display); font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); letter-spacing: 0.3px; position: relative; padding: 0.25rem 0; }
.nav-desktop a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--blue-primary); transition: width 0.3s ease; }
.nav-desktop a:hover, .nav-desktop a.active { color: var(--text-primary); }
.nav-desktop a:hover::after, .nav-desktop a.active::after { width: 100%; }
.nav-cta { display: none; }
@media(min-width:768px) { .nav-cta { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.6rem 1.25rem; background: var(--blue-primary); color: #fff; border-radius: 8px; font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; transition: all 0.3s ease; } .nav-cta:hover { background: var(--blue-light); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(74,123,255,0.3); } }
.mobile-toggle { display: flex; flex-direction: column; gap: 5px; padding: 0.5rem; }
@media(min-width:768px) { .mobile-toggle { display: none; } }
.mobile-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all 0.3s ease; }

/* Mobile Menu */
.mobile-menu { position: fixed; top: 0; right: -100%; width: 85%; max-width: 360px; height: 100vh; background: var(--bg-secondary); border-left: 1px solid var(--border); padding: 2rem; z-index: 1002; transition: right 0.4s cubic-bezier(0.4,0,0.2,1); }
.mobile-menu.open { right: 0; }
.mobile-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 1001; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.mobile-overlay.open { opacity: 1; pointer-events: all; }
.mobile-close { position: absolute; top: 1.5rem; right: 1.5rem; color: var(--text-secondary); font-size: 1.5rem; }
.mobile-menu-nav { margin-top: 4rem; display: flex; flex-direction: column; gap: 0.5rem; }
.mobile-menu-nav a { font-family: var(--font-display); font-size: 1.1rem; font-weight: 500; color: var(--text-secondary); padding: 0.75rem 1rem; border-radius: 8px; transition: all 0.2s ease; }
.mobile-menu-nav a:hover, .mobile-menu-nav a.active { color: var(--text-primary); background: var(--blue-glow); }
.mobile-menu-cta { margin-top: 2rem; display: block; text-align: center; padding: 0.85rem 1.5rem; background: var(--blue-primary); color: #fff; border-radius: 8px; font-family: var(--font-display); font-size: 0.95rem; font-weight: 600; }

/* Page Hero */
.page-hero { padding: 10rem 0 5rem; position: relative; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; top: -20%; right: -10%; width: 500px; height: 500px; background: radial-gradient(circle, var(--blue-glow-strong) 0%, transparent 70%); border-radius: 50%; }
.page-hero h1 { font-family: var(--font-display); font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 1rem; position: relative; }
.page-hero p { font-size: 1.1rem; color: var(--text-secondary); max-width: 560px; line-height: 1.7; position: relative; }
.gradient { background: linear-gradient(135deg, var(--blue-primary), var(--cyan)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* Section shared */
.section { padding: 5rem 0; }
.section-label { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; color: var(--blue-primary); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 1rem; }
.section-label::before { content: ''; width: 20px; height: 2px; background: var(--blue-primary); border-radius: 2px; }
.section-title { font-family: var(--font-display); font-size: clamp(1.75rem, 3.5vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1rem; }
.section-desc { font-size: 1.05rem; color: var(--text-secondary); max-width: 560px; line-height: 1.7; }

/* Buttons */
.btn-primary { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.75rem; background: var(--blue-primary); color: #fff; border-radius: 10px; font-family: var(--font-display); font-size: 0.95rem; font-weight: 600; transition: all 0.3s ease; border: none; }
.btn-primary:hover { background: var(--blue-light); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(74,123,255,0.35); }
.btn-ghost { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.75rem; background: transparent; color: var(--text-primary); border: 1px solid var(--border); border-radius: 10px; font-family: var(--font-display); font-size: 0.95rem; font-weight: 600; transition: all 0.3s ease; }
.btn-ghost:hover { border-color: var(--blue-primary); background: var(--blue-glow); transform: translateY(-2px); }

/* Portfolio Cards */
.portfolio-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-top: 3rem; }
@media(min-width:640px) { .portfolio-grid { grid-template-columns: repeat(2, 1fr); } }
@media(min-width:1024px) { .portfolio-grid { grid-template-columns: repeat(3, 1fr); } }
.portfolio-card { position: relative; background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: all 0.4s ease; }
.portfolio-card:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 60px var(--blue-glow); }
.portfolio-thumb { position: relative; aspect-ratio: 16/10; overflow: hidden; background: var(--bg-secondary); }
.portfolio-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.portfolio-card:hover .portfolio-thumb img { transform: scale(1.05); }
.portfolio-tag { position: absolute; top: 0.75rem; left: 0.75rem; padding: 0.3rem 0.75rem; background: rgba(10,14,26,0.75); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.1); border-radius: 6px; font-family: var(--font-display); font-size: 0.7rem; font-weight: 600; color: var(--cyan); letter-spacing: 0.5px; text-transform: uppercase; }
.portfolio-body { padding: 1.25rem 1.5rem 1.5rem; }
.portfolio-body h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.portfolio-body p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 1rem; }
.portfolio-link { display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: var(--blue-primary); transition: all 0.2s ease; }
.portfolio-link:hover { gap: 0.7rem; color: var(--blue-light); }
.portfolio-link i { font-size: 0.75rem; }

/* Tech tags */
.p-techs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.p-tech { padding: 0.2rem 0.6rem; background: rgba(74,123,255,0.08); border: 1px solid rgba(74,123,255,0.12); border-radius: 4px; font-size: 0.7rem; font-family: var(--font-display); font-weight: 500; color: var(--blue-light); }

/* CTA */
.cta-box { position: relative; padding: 4rem 3rem; background: linear-gradient(135deg, var(--bg-card) 0%, rgba(74,123,255,0.08) 100%); border: 1px solid var(--border-hover); border-radius: 24px; text-align: center; overflow: hidden; }
.cta-box::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at 30% 50%, var(--blue-glow) 0%, transparent 50%); pointer-events: none; }
.cta-box h2 { position: relative; font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: 1rem; }
.cta-box p { position: relative; color: var(--text-secondary); max-width: 480px; margin: 0 auto 2rem; font-size: 1.05rem; }
.cta-box .btn-primary { position: relative; }

/* Footer */
footer { padding: 5rem 0 2rem; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 3rem; margin-bottom: 4rem; }
@media(min-width:640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media(min-width:1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-brand p { color: var(--text-secondary); margin: 1rem 0 1.5rem; font-size: 0.9rem; line-height: 1.7; max-width: 280px; }
.footer-socials { display: flex; gap: 0.75rem; }
.footer-socials a { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; color: var(--text-secondary); font-size: 1rem; transition: all 0.3s ease; }
.footer-socials a:hover { background: var(--blue-glow); border-color: var(--border-hover); color: var(--blue-primary); transform: translateY(-2px); }
.footer-col h4 { font-family: var(--font-display); font-size: 0.9rem; font-weight: 700; margin-bottom: 1.25rem; color: var(--text-primary); }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul a { font-size: 0.9rem; color: var(--text-secondary); transition: all 0.2s ease; }
.footer-col ul a:hover { color: var(--blue-primary); padding-left: 4px; }
.footer-col ul li.contact-item { display: flex; align-items: center; gap: 0.5rem; color: var(--text-secondary); font-size: 0.9rem; }
.footer-col ul li.contact-item i { color: var(--blue-primary); font-size: 0.85rem; width: 16px; }
.footer-bottom { padding-top: 2rem; border-top: 1px solid var(--border); text-align: center; font-size: 0.85rem; color: var(--text-muted); }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media(max-width:640px) { .cta-box { padding: 3rem 1.5rem; } }