/*
 * Cyril Silapa - Neon Portfolio
 * Professional tech-inspired design
 */

:root {
   --neon-cyan: #00f5ff;
   --neon-magenta: #ff00ff;
   --neon-purple: #b14aed;
   --neon-green: #39ff14;
   --neon-blue: #0066ff;
   --bg-dark: #0a0a0f;
   --bg-darker: #06060a;
   --bg-card: #0f0f16;
   --bg-card-hover: #15151f;
   --text-primary: #e8e8ec;
   --text-muted: #8b8b9a;
   --font-sans: 'Outfit', -apple-system, sans-serif;
   --font-mono: 'JetBrains Mono', monospace;
   --glow-cyan: 0 0 20px rgba(0, 245, 255, 0.4);
   --glow-magenta: 0 0 20px rgba(255, 0, 255, 0.3);
   --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
   font-family: var(--font-sans);
   background: var(--bg-dark);
   color: var(--text-primary);
   line-height: 1.6;
   overflow-x: hidden;
}

a { color: var(--neon-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--neon-magenta); }

::selection {
   background: rgba(0, 245, 255, 0.25);
   color: var(--text-primary);
}

/* Language Switcher - inside nav */
.lang-switcher {
   margin-left: auto;
   display: flex;
   align-items: center;
   gap: 8px;
}
.lang-btn {
   background: transparent;
   border: 1px solid var(--text-muted);
   color: var(--text-muted);
   padding: 6px 12px;
   font-family: var(--font-mono);
   font-size: 12px;
   cursor: pointer;
   transition: all var(--transition);
   border-radius: 4px;
}
.lang-btn:hover, .lang-btn.active,
.lang-btn:focus-visible {
   border-color: var(--neon-cyan);
   color: var(--neon-cyan);
   box-shadow: var(--glow-cyan);
   outline: none;
}
.lang-divider { color: var(--text-muted); font-size: 12px; }

/* Navigation */
.nav {
   position: fixed;
   top: 0;
   left: 0;
   right: 0;
   z-index: 999;
   display: flex;
   flex-wrap: wrap;
   justify-content: center;
   align-items: center;
   gap: 32px;
   padding: 20px 24px;
   background: rgba(10, 10, 15, 0.85);
   backdrop-filter: blur(12px);
   border-bottom: 1px solid rgba(0, 245, 255, 0.1);
   transition: all var(--transition);
}
.nav.scrolled { background: rgba(10, 10, 15, 0.95); box-shadow: 0 4px 30px rgba(0, 245, 255, 0.08); }

.nav-link {
   color: var(--text-muted);
   font-size: 14px;
   font-weight: 500;
   padding: 8px 0;
   position: relative;
}
.nav-link::after {
   content: '';
   position: absolute;
   bottom: 0;
   left: 0;
   width: 0;
   height: 2px;
   background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
   transition: width var(--transition);
}
.nav-link:hover, .nav-link.active {
   color: var(--neon-cyan);
}
.nav-link:hover::after { width: 100%; }

.nav-toggle {
   display: none;
   flex-direction: column;
   gap: 5px;
   background: none;
   border: none;
   cursor: pointer;
   padding: 8px;
}
.nav-toggle span {
   width: 24px;
   height: 2px;
   background: var(--neon-cyan);
   transition: var(--transition);
}

/* Hero */
.hero {
   min-height: 100vh;
   display: flex;
   align-items: center;
   justify-content: center;
   position: relative;
   padding: 120px 24px 80px;
   overflow: hidden;
}

.hero-bg {
   position: absolute;
   inset: 0;
   background: 
      radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 245, 255, 0.08) 0%, transparent 50%),
      radial-gradient(ellipse 60% 40% at 80% 60%, rgba(177, 74, 237, 0.06) 0%, transparent 50%),
      var(--bg-dark);
}

.grid-overlay {
   position: absolute;
   inset: 0;
   background-image: 
      linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
   background-size: 60px 60px;
}

.hero-graphic {
   position: absolute;
   width: 500px;
   height: 500px;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   opacity: 0.6;
   animation: float 15s ease-in-out infinite;
}

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

.hero-content {
   position: relative;
   z-index: 2;
   text-align: center;
   max-width: 720px;
}

.hero-label {
   font-family: var(--font-mono);
   font-size: 14px;
   color: var(--neon-cyan);
   margin-bottom: 16px;
   letter-spacing: 3px;
   text-transform: uppercase;
}

.hero-title {
   font-size: clamp(3rem, 8vw, 5rem);
   font-weight: 700;
   background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
   -webkit-background-clip: text;
   -webkit-text-fill-color: transparent;
   background-clip: text;
   margin-bottom: 24px;
   letter-spacing: -1px;
}

.hero-desc {
   font-size: 18px;
   color: var(--text-muted);
   margin-bottom: 40px;
   line-height: 1.7;
}

.hero-cta {
   display: flex;
   gap: 16px;
   justify-content: center;
   flex-wrap: wrap;
   margin-bottom: 40px;
}

.btn {
   display: inline-flex;
   align-items: center;
   gap: 10px;
   padding: 14px 28px;
   font-family: var(--font-sans);
   font-size: 15px;
   font-weight: 600;
   border-radius: 6px;
   cursor: pointer;
   transition: all var(--transition);
   border: none;
}

.btn-neon {
   background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
   color: var(--bg-dark);
   box-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
}
.btn-neon:hover {
   transform: translateY(-2px);
   box-shadow: 0 0 40px rgba(0, 245, 255, 0.5);
}

.btn-outline {
   background: transparent;
   color: var(--neon-cyan);
   border: 2px solid var(--neon-cyan);
}
.btn-outline:hover {
   background: rgba(0, 245, 255, 0.1);
   box-shadow: var(--glow-cyan);
}
.btn:active {
   transform: scale(0.98);
}
.btn:focus-visible {
   outline: 2px solid var(--neon-cyan);
   outline-offset: 3px;
}

.hero-social {
   display: flex;
   justify-content: center;
   gap: 20px;
}
.hero-social a {
   font-size: 24px;
   color: var(--text-muted);
   transition: all var(--transition);
}
.hero-social a:hover {
   color: var(--neon-cyan);
   transform: translateY(-3px);
}

.scroll-indicator {
   position: absolute;
   bottom: 40px;
   left: 50%;
   transform: translateX(-50%);
   color: var(--neon-cyan);
   animation: bounce 2s infinite;
}
.scroll-indicator span {
   display: block;
   width: 24px;
   height: 24px;
   border-right: 2px solid currentColor;
   border-bottom: 2px solid currentColor;
   transform: rotate(45deg);
}

@keyframes bounce {
   0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
   40% { transform: translateX(-50%) translateY(10px); }
   60% { transform: translateX(-50%) translateY(5px); }
}

/* Sections */
.section {
   padding: 100px 24px;
}

.section-dark {
   background: var(--bg-darker);
}

.container {
   max-width: 1100px;
   margin: 0 auto;
}

.section-header {
   margin-bottom: 60px;
}

.section-tag {
   font-family: var(--font-mono);
   font-size: 14px;
   color: var(--neon-cyan);
   letter-spacing: 2px;
   display: block;
   margin-bottom: 12px;
}

.section-title {
   font-size: clamp(2rem, 4vw, 3rem);
   font-weight: 700;
   color: var(--text-primary);
}

/* Glow Border */
.glow-border {
   position: relative;
   border: 1px solid rgba(0, 245, 255, 0.2);
   border-radius: 12px;
   transition: all var(--transition);
}
.glow-border::before {
   content: '';
   position: absolute;
   inset: -1px;
   border-radius: 12px;
   padding: 1px;
   background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple), var(--neon-magenta));
   -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
   mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
   -webkit-mask-composite: xor;
   mask-composite: exclude;
   opacity: 0.4;
   pointer-events: none;
   transition: opacity var(--transition);
}
.glow-border:hover {
   border-color: rgba(0, 245, 255, 0.4);
   box-shadow: 0 0 30px rgba(0, 245, 255, 0.15);
}
.glow-border:hover::before { opacity: 0.7; }

/* About */
.about-grid {
   display: grid;
   grid-template-columns: 320px 1fr;
   gap: 60px;
   align-items: center;
}

.about-card {
   background: var(--bg-card);
   padding: 32px;
   text-align: center;
}

.about-img {
   width: 200px;
   height: 200px;
   object-fit: cover;
   border-radius: 50%;
   margin-bottom: 24px;
   border: 2px solid rgba(0, 245, 255, 0.3);
}

.about-img-placeholder {
   width: 200px;
   height: 200px;
   margin: 0 auto 24px;
   border-radius: 50%;
   background: linear-gradient(135deg, rgba(0, 245, 255, 0.2), rgba(177, 74, 237, 0.2));
   display: flex;
   flex-direction: column;
   align-items: center;
   justify-content: center;
   gap: 8px;
   font-family: var(--font-mono);
   color: var(--neon-cyan);
}
.about-img-placeholder i { font-size: 48px; }

.about-stats {
   display: flex;
   justify-content: center;
   gap: 24px;
}
.stat {
   display: flex;
   flex-direction: column;
}
.stat strong { color: var(--neon-cyan); font-size: 18px; }
.stat span { font-size: 12px; color: var(--text-muted); }

.about-content .about-text {
   font-size: 17px;
   color: var(--text-muted);
   margin-bottom: 32px;
   line-height: 1.8;
}

.about-info {
   margin-bottom: 32px;
}

.info-item {
   display: flex;
   align-items: center;
   gap: 12px;
   margin-bottom: 12px;
   color: var(--text-muted);
}
.info-item i { color: var(--neon-cyan); width: 20px; }

.about-hobbies {
   font-size: 14px;
   color: var(--text-muted);
   margin-bottom: 24px;
   font-style: italic;
}

/* Timeline */
.timeline {
   position: relative;
   padding-left: 40px;
   border-left: 2px solid rgba(0, 245, 255, 0.3);
}

.timeline-item {
   position: relative;
   margin-bottom: 40px;
}

.timeline-marker {
   position: absolute;
   left: -45px;
   top: 8px;
   width: 12px;
   height: 12px;
   background: var(--neon-cyan);
   border-radius: 50%;
   box-shadow: var(--glow-cyan);
}

.timeline-content {
   background: var(--bg-card);
   padding: 28px 32px;
}

.timeline-content h3 {
   font-size: 20px;
   color: var(--neon-cyan);
   margin-bottom: 8px;
}

.timeline-meta {
   font-size: 14px;
   color: var(--text-muted);
   margin-bottom: 12px;
}

.timeline-intro {
   font-size: 15px;
   color: var(--text-muted);
   margin-bottom: 16px;
   line-height: 1.6;
}

.timeline-content ul {
   list-style: none;
}
.timeline-content li {
   position: relative;
   padding-left: 20px;
   margin-bottom: 8px;
   color: var(--text-muted);
}
.timeline-content li::before {
   content: '▹';
   position: absolute;
   left: 0;
   color: var(--neon-cyan);
}

/* Skills */
.skills-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
   gap: 24px;
}

.skill-category {
   background: var(--bg-card);
   padding: 32px;
   text-align: center;
}

.skill-icon {
   font-size: 36px;
   color: var(--neon-cyan);
   margin-bottom: 16px;
}

.skill-category h4 {
   font-size: 18px;
   margin-bottom: 20px;
   color: var(--text-primary);
}

.skill-tags {
   display: flex;
   flex-wrap: wrap;
   gap: 10px;
   justify-content: center;
}

.skill-tags span {
   padding: 8px 14px;
   background: rgba(0, 245, 255, 0.1);
   border: 1px solid rgba(0, 245, 255, 0.2);
   border-radius: 6px;
   font-size: 13px;
   font-family: var(--font-mono);
   color: var(--text-primary);
   transition: all var(--transition);
}

.skill-tags span:hover {
   background: rgba(0, 245, 255, 0.2);
   border-color: var(--neon-cyan);
   box-shadow: 0 0 15px rgba(0, 245, 255, 0.2);
}

/* Portfolio */
.portfolio-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
   gap: 24px;
}

.portfolio-card {
   background: var(--bg-card);
   border-radius: 12px;
   overflow: hidden;
   cursor: pointer;
   transition: transform var(--transition), box-shadow var(--transition);
}
.portfolio-card:hover {
   transform: translateY(-4px);
   box-shadow: 0 12px 40px rgba(0, 245, 255, 0.12);
}

.portfolio-img-wrap {
   position: relative;
   aspect-ratio: 4/3;
   overflow: hidden;
}

.portfolio-img-wrap img {
   width: 100%;
   height: 100%;
   object-fit: cover;
   transition: transform var(--transition);
}

.portfolio-img-wrap.no-img {
   background: linear-gradient(135deg, rgba(0, 245, 255, 0.1), rgba(177, 74, 237, 0.1));
   display: flex;
   align-items: center;
   justify-content: center;
}
.portfolio-img-wrap .portfolio-img-placeholder.neon-placeholder {
   width: 100%;
   height: 100%;
   display: flex;
   align-items: center;
   justify-content: center;
   background: linear-gradient(135deg, rgba(0, 245, 255, 0.1), rgba(177, 74, 237, 0.1));
}
.portfolio-img-wrap .portfolio-img-placeholder.neon-placeholder i {
   font-size: 48px;
   color: var(--neon-cyan);
   opacity: 0.7;
}
.portfolio-subtitle {
   font-size: 18px;
   color: var(--neon-cyan);
   margin: 32px 0 20px;
   font-weight: 600;
}
.portfolio-subtitle:first-of-type { margin-top: 0; }

.portfolio-img-wrap.no-img::after {
   content: '</>';
   font-family: var(--font-mono);
   font-size: 42px;
   color: var(--neon-cyan);
   opacity: 0.6;
}

.portfolio-card:hover .portfolio-img-wrap img {
   transform: scale(1.08);
}

.portfolio-overlay {
   position: absolute;
   inset: 0;
   background: linear-gradient(to top, rgba(10, 10, 15, 0.95), transparent 60%);
   display: flex;
   align-items: flex-end;
   justify-content: center;
   padding: 24px;
   opacity: 0;
   transition: opacity var(--transition);
}

.portfolio-card:hover .portfolio-overlay {
   opacity: 1;
}

.portfolio-more {
   color: var(--neon-cyan);
   font-family: var(--font-mono);
   font-size: 14px;
   padding: 8px 20px;
   border: 2px solid var(--neon-cyan);
   border-radius: 6px;
   transition: background var(--transition), box-shadow var(--transition);
}
.portfolio-card:hover .portfolio-more {
   background: rgba(0, 245, 255, 0.1);
   box-shadow: 0 0 15px rgba(0, 245, 255, 0.3);
}

.portfolio-info {
   padding: 20px;
}

.portfolio-info h4 {
   font-size: 18px;
   color: var(--text-primary);
   margin-bottom: 4px;
}

.portfolio-info p {
   font-size: 13px;
   color: var(--text-muted);
}

/* Contact */
.contact-box {
   max-width: 600px;
   margin: 0 auto;
   background: var(--bg-card);
   padding: 48px;
   text-align: center;
}

.contact-text {
   font-size: 18px;
   color: var(--text-muted);
   margin-bottom: 32px;
}

.contact-info {
   display: flex;
   flex-direction: column;
   gap: 12px;
   margin-bottom: 32px;
   color: var(--text-primary);
}
.contact-info i { color: var(--neon-cyan); margin-right: 10px; }

/* Footer */
.footer {
   padding: 40px 24px;
   border-top: 1px solid rgba(0, 245, 255, 0.1);
}

.footer-inner {
   display: flex;
   flex-direction: column;
   align-items: center;
   gap: 16px;
}

.footer-social {
   font-size: 28px;
   color: var(--text-muted);
   transition: all var(--transition);
}
.footer-social:hover {
   color: var(--neon-cyan);
   transform: scale(1.1);
}

.footer-copy {
   font-size: 14px;
   color: var(--text-muted);
}

/* Skip to content - accessibility */
.skip-link {
   position: absolute;
   top: -100px;
   left: 50%;
   transform: translateX(-50%);
   padding: 12px 24px;
   background: var(--neon-cyan);
   color: var(--bg-dark);
   font-weight: 600;
   border-radius: 6px;
   z-index: 10000;
   transition: top 0.3s ease;
}
.skip-link:focus {
   top: 20px;
   outline: none;
}

/* Modal */
.modal-overlay {
   position: fixed;
   inset: 0;
   background: rgba(0, 0, 0, 0.9);
   backdrop-filter: blur(8px);
   z-index: 2000;
   display: flex;
   align-items: center;
   justify-content: center;
   padding: 24px;
   opacity: 0;
   visibility: hidden;
   transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.active {
   opacity: 1;
   visibility: visible;
}

.modal-overlay.active .modal-container {
   animation: modalIn 0.35s ease forwards;
}

@keyframes modalIn {
   from {
      opacity: 0;
      transform: scale(0.95) translateY(20px);
   }
   to {
      opacity: 1;
      transform: scale(1) translateY(0);
   }
}

.modal-container {
   position: relative;
   max-width: 700px;
   width: 100%;
   max-height: 90vh;
   overflow-y: auto;
   opacity: 0;
}

.modal-close {
   position: absolute;
   top: -40px;
   right: 0;
   background: none;
   border: none;
   color: var(--neon-cyan);
   font-size: 36px;
   cursor: pointer;
   transition: color var(--transition);
}
.modal-close:hover { color: var(--neon-magenta); }

.modal-content {
   background: var(--bg-card);
   border: 1px solid rgba(0, 245, 255, 0.3);
   border-radius: 12px;
   overflow: hidden;
}

.modal-content img {
   width: 100%;
   height: auto;
   display: block;
}

.modal-body {
   padding: 24px;
}

.modal-body h4 {
   font-size: 22px;
   color: var(--neon-cyan);
   margin-bottom: 12px;
}

.modal-body p {
   color: var(--text-muted);
   margin-bottom: 16px;
}

.modal-tags {
   font-size: 13px;
   font-family: var(--font-mono);
   color: var(--text-muted);
}

/* Reveal Animation */
.reveal {
   opacity: 0;
   transform: translateY(30px);
   transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
   opacity: 1;
   transform: translateY(0);
}

/* Staggered portfolio reveal */
.portfolio-card.reveal { transition-delay: 0s; }
.portfolio-card.reveal:nth-child(1) { transition-delay: 0.05s; }
.portfolio-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.portfolio-card.reveal:nth-child(3) { transition-delay: 0.15s; }
.portfolio-card.reveal:nth-child(4) { transition-delay: 0.2s; }

/* Responsive */
@media (max-width: 900px) {
   .about-grid { grid-template-columns: 1fr; }
   .about-visual { order: -1; }
   .about-card { max-width: 320px; margin: 0 auto; }
}

@media (max-width: 768px) {
   .nav {
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 16px;
   }
   .nav-link { display: none; }
   .nav.open .nav-link { display: block; width: 100%; text-align: center; }
   .lang-switcher { margin-left: auto; }

   .nav-toggle {
      display: flex;
   }
   .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); }

   .timeline { padding-left: 24px; }
   .timeline-marker { left: -29px; width: 10px; height: 10px; }
}

@media (max-width: 480px) {
   .hero-cta { flex-direction: column; }
   .section { padding: 60px 16px; }
   .contact-box { padding: 32px 24px; }
}