/* =========================================
   Certified Hardware Hacker — Main Stylesheet
   Dark & techy theme | Green + Black | WHID
   ========================================= */

:root {
  --bg: #0a0a0a;
  --bg-card: #1a1a1a;
  --bg-alt: #111827;
  --green: #00e676;
  --green-dark: #00b85a;
  --green-glow: rgba(0, 230, 118, 0.12);
  --text: #f0f0f0;
  --text-muted: #9ca3af;
  --border: rgba(0, 230, 118, 0.2);
  --font: 'Inter', sans-serif;
  --max-w: 1200px;
  --radius: 12px;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* =========================================
   UTILITIES
   ========================================= */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; }
.bg-alt { background: var(--bg-alt); }
.text-green { color: var(--green); }

.section-label {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; color: var(--green); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800;
  line-height: 1.15; letter-spacing: -0.5px; margin-bottom: 20px;
}
.section-subtitle {
  font-size: 1.05rem; color: var(--text-muted);
  max-width: 580px; margin-bottom: 56px; line-height: 1.7;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 7px; font-family: var(--font);
  font-size: 0.9rem; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: all var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--green); color: #000; }
.btn-primary:hover {
  background: var(--green-dark); transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0,230,118,0.3);
}
.btn-outline { background: transparent; color: var(--green); border: 1.5px solid var(--green); }
.btn-outline:hover { background: var(--green-glow); transform: translateY(-1px); }
.btn-large { padding: 16px 44px; font-size: 1.05rem; }

/* =========================================
   SCROLL REVEAL
   ========================================= */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }
.reveal-delay-5 { transition-delay: 0.60s; }

/* =========================================
   NAVBAR
   ========================================= */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 20px 0; transition: all var(--transition);
}
#navbar.scrolled {
  background: rgba(10,10,10,0.95); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px); padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 32px; }
.nav-logo { font-size: 1.4rem; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -0.5px; flex-shrink: 0; }
.nav-logo span { color: var(--green); }
.nav-links { display: flex; list-style: none; gap: 28px; margin-left: auto; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color var(--transition); }
.nav-links a:hover { color: var(--green); }
.nav-cta { flex-shrink: 0; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all var(--transition); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-inner { gap: 0; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(10,10,10,0.98); flex-direction: column;
    padding: 20px 24px; gap: 20px; border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
}

/* =========================================
   HERO
   ========================================= */
#hero {
  position: relative; min-height: 100vh; display: flex;
  align-items: center; overflow: hidden; padding-top: 80px;
}
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(0,230,118,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(0,230,118,0.035) 1px, transparent 1px);
  background-size: 60px 60px; pointer-events: none;
}
.hero-glow {
  position: absolute; top: 15%; left: 50%; transform: translateX(-50%);
  width: 700px; height: 500px;
  background: radial-gradient(ellipse, rgba(0,230,118,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; text-align: center; padding: 60px 24px; width: 100%; }
.hero-badge {
  display: inline-block; padding: 6px 18px; background: rgba(0,230,118,0.1);
  border: 1px solid var(--border); border-radius: 100px; font-size: 0.8rem;
  font-weight: 700; color: var(--green); letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 32px;
}
.hero-title { font-size: clamp(2.6rem, 8vw, 5.5rem); font-weight: 800; line-height: 1.05; letter-spacing: -2px; margin-bottom: 28px; }
.hero-subtitle { font-size: clamp(1rem, 2vw, 1.2rem); color: var(--text-muted); max-width: 600px; margin: 0 auto 44px; line-height: 1.75; }
.hero-ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 72px; }
.hero-ctas .btn { padding: 14px 30px; font-size: 1rem; }
.hero-stats {
  display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap;
  padding: 32px; background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.07); border-radius: 16px; max-width: 620px; margin: 0 auto;
}
.hero-stat { display: flex; flex-direction: column; gap: 4px; }
.hero-stat-value { font-size: 2rem; font-weight: 800; color: var(--green); line-height: 1; }
.hero-stat-label { font-size: 0.78rem; color: var(--text-muted); max-width: 130px; line-height: 1.4; }
.hero-stat-divider { width: 1px; height: 52px; background: var(--border); flex-shrink: 0; }
.hero-scroll-indicator {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.72rem; letter-spacing: 1.5px; text-transform: uppercase;
}
.scroll-line { width: 1px; height: 44px; background: linear-gradient(to bottom, var(--green), transparent); animation: scrollPulse 2s ease-in-out infinite; }
@keyframes scrollPulse { 0%,100% { opacity: 0.25; } 50% { opacity: 1; } }

@media (max-width: 640px) {
  .hero-stat-divider { display: none; }
  .hero-stats { gap: 24px; padding: 24px 20px; }
  .hero-scroll-indicator { display: none; }
}

/* =========================================
   ABOUT
   ========================================= */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: start; margin-bottom: 64px;
}
.about-text p { color: var(--text-muted); margin-bottom: 20px; font-size: 1.02rem; line-height: 1.8; }
.info-box {
  display: flex; gap: 16px; background: rgba(0,230,118,0.07);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-top: 32px;
}
.info-icon { font-size: 1.5rem; flex-shrink: 0; line-height: 1; }
.info-box p { color: var(--text); margin: 0; font-size: 0.95rem; }
.info-box strong { color: var(--green); }

/* Certificate preview in About section */
.cert-preview { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.cert-image {
  width: 100%; border-radius: 10px;
  border: 2px solid var(--border);
  box-shadow: 0 0 48px rgba(0,230,118,0.15), 0 24px 64px rgba(0,0,0,0.5);
  transform: rotate(1.2deg);
  transition: transform var(--transition), box-shadow var(--transition);
}
.cert-image:hover {
  transform: rotate(0deg) scale(1.01);
  box-shadow: 0 0 64px rgba(0,230,118,0.25), 0 32px 72px rgba(0,0,0,0.5);
}
.cert-caption { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 1px; text-align: center; font-style: italic; }

/* Fact cards row (below about-grid) */
.fact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.fact-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 32px; transition: transform var(--transition), box-shadow var(--transition);
}
.fact-card:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(0,230,118,0.12); }
.fact-number { font-size: 1.8rem; font-weight: 800; color: var(--green); margin-bottom: 8px; line-height: 1; }
.fact-label { color: var(--text-muted); font-size: 0.88rem; line-height: 1.55; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .fact-cards { grid-template-columns: 1fr; }
}

/* =========================================
   SKILLS (requirements-grid reuse)
   ========================================= */
.requirements-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.req-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px; transition: transform var(--transition), box-shadow var(--transition);
}
.req-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,230,118,0.12); }
.req-icon { font-size: 2.4rem; margin-bottom: 18px; line-height: 1; }
.req-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.req-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }

@media (max-width: 900px) { .requirements-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .requirements-grid { grid-template-columns: 1fr; } }

/* =========================================
   CHALLENGE COIN SECTION
   ========================================= */
#coin {
  position: relative; padding: 120px 0;
  background-image: url('../images/challenge_coins.jpeg');
  background-size: cover; background-position: center;
  background-attachment: fixed;
}
.coin-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.82);
  backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px);
}
.coin-content { position: relative; z-index: 1; text-align: center; }
.coin-subtitle { max-width: 640px; margin: 0 auto 56px; }
.coin-display { margin: 0 auto 60px; width: 280px; height: 280px; display: flex; align-items: center; justify-content: center; }
.coin-gif {
  width: 280px; height: 280px; object-fit: contain;
  filter: drop-shadow(0 0 40px rgba(0,230,118,0.4));
  border-radius: 50%;
}
.coin-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.coin-fact {
  background: rgba(255,255,255,0.04); border: 1px solid rgba(0,230,118,0.15);
  border-radius: var(--radius); padding: 32px 24px; text-align: center;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: transform var(--transition), border-color var(--transition);
}
.coin-fact:hover { transform: translateY(-4px); border-color: var(--border); }
.coin-fact-icon { font-size: 2.4rem; margin-bottom: 14px; line-height: 1; }
.coin-fact h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.coin-fact p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.65; }

@media (max-width: 768px) {
  #coin { background-attachment: scroll; }
  .coin-facts { grid-template-columns: 1fr; gap: 16px; }
  .coin-display { width: 220px; height: 220px; }
  .coin-gif { width: 220px; height: 220px; }
}

/* =========================================
   CERTIFICATION — WHAT YOU RECEIVE
   ========================================= */
.cert-receive-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px; align-items: start;
}
.cert-photo-wrap { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.cert-photo {
  width: 100%; border-radius: 12px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6), 0 0 40px rgba(0,230,118,0.1);
  border: 1px solid rgba(255,255,255,0.07);
  transition: box-shadow var(--transition);
}
.cert-photo:hover { box-shadow: 0 32px 100px rgba(0,0,0,0.7), 0 0 56px rgba(0,230,118,0.18); }
.cert-photo-caption { font-size: 0.78rem; color: var(--text-muted); letter-spacing: 1px; font-style: italic; text-align: center; }

.cert-receive-text { display: flex; flex-direction: column; gap: 32px; }
.receive-item { display: flex; gap: 20px; align-items: flex-start; }
.receive-icon { font-size: 2rem; flex-shrink: 0; line-height: 1.2; }
.receive-item h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.receive-item p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; }

@media (max-width: 900px) {
  .cert-receive-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* =========================================
   HOW TO GET CERTIFIED — STEPS
   ========================================= */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 56px; }
.step-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px 32px; position: relative; overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.step-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,230,118,0.12); }
.step-number {
  font-size: 5rem; font-weight: 800; line-height: 1;
  color: rgba(0,230,118,0.08); position: absolute; top: 16px; right: 20px;
  letter-spacing: -3px; user-select: none;
}
.step-icon { font-size: 2.6rem; margin-bottom: 20px; line-height: 1; position: relative; z-index: 1; }
.step-card h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 1; }
.step-card p { color: var(--text-muted); font-size: 0.92rem; line-height: 1.75; margin-bottom: 20px; position: relative; z-index: 1; }
.step-card strong { color: var(--text); }
.step-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--green); font-size: 0.88rem; font-weight: 600; text-decoration: none;
  transition: gap var(--transition); position: relative; z-index: 1;
}
.step-link:hover { gap: 10px; }

.training-cta { text-align: center; }

@media (max-width: 768px) { .steps-grid { grid-template-columns: 1fr; gap: 16px; } }

/* =========================================
   TESTIMONIALS
   ========================================= */

/* Feedback image carousel */
.feedback-carousel {
  position: relative; max-width: 520px; margin: 0 auto 56px;
}
.carousel-track { position: relative; border-radius: 16px; overflow: hidden; }
.carousel-slide {
  display: none;
  animation: carouselFade 0.5s ease;
}
.carousel-slide.active { display: block; }
.carousel-slide img {
  width: 100%; display: block; border-radius: 16px;
  box-shadow: 0 16px 56px rgba(0,0,0,0.5), 0 0 32px rgba(0,230,118,0.08);
  border: 1px solid rgba(255,255,255,0.07);
}
@keyframes carouselFade {
  from { opacity: 0; transform: scale(0.98); }
  to   { opacity: 1; transform: scale(1); }
}
.carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,0.6); border: 1px solid var(--border);
  color: var(--green); font-size: 1.2rem; width: 40px; height: 40px;
  border-radius: 50%; cursor: pointer; display: flex; align-items: center;
  justify-content: center; transition: all var(--transition); z-index: 2;
  backdrop-filter: blur(4px);
}
.carousel-btn:hover { background: rgba(0,230,118,0.15); border-color: var(--green); }
.carousel-prev { left: -20px; }
.carousel-next { right: -20px; }
.carousel-dots {
  display: flex; justify-content: center; gap: 8px; margin-top: 16px;
}
.carousel-dot {
  width: 8px; height: 8px; border-radius: 50%; border: none;
  background: rgba(255,255,255,0.2); cursor: pointer;
  transition: all var(--transition);
}
.carousel-dot.active { background: var(--green); transform: scale(1.3); }

@media (max-width: 600px) {
  .carousel-prev { left: 6px; }
  .carousel-next { right: 6px; }
}

/* Featured long quote */
.testimonial-featured {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; padding: 48px 52px; margin-bottom: 32px;
  position: relative;
}
.testimonial-quote-mark {
  font-size: 8rem; line-height: 0.6; color: var(--green); opacity: 0.2;
  font-family: Georgia, serif; position: absolute; top: 32px; left: 40px;
  user-select: none;
}
.testimonial-featured blockquote {
  font-size: 1rem; color: var(--text-muted); line-height: 1.85;
  font-style: italic; margin-bottom: 28px; padding-left: 8px;
}
.testimonial-author { display: flex; flex-direction: column; gap: 4px; }
.testimonial-name { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.testimonial-role { font-size: 0.82rem; color: var(--green); font-weight: 600; }

/* 2×2 grid of shorter cards */
.testimonials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.testimonial-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px 28px;
  display: flex; flex-direction: column; gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,230,118,0.1); }
.testimonial-stars { color: var(--green); font-size: 1rem; letter-spacing: 2px; }
.testimonial-card blockquote {
  font-size: 0.93rem; color: var(--text-muted); line-height: 1.75;
  font-style: italic; flex: 1;
}
.testimonial-card .testimonial-author { margin-top: auto; }
.testimonial-card .testimonial-name { font-size: 0.85rem; font-weight: 700; color: var(--green); }

/* nav-logo sizing for longer name */
.nav-logo { font-size: 1.1rem; }

@media (max-width: 768px) {
  .testimonials-grid { grid-template-columns: 1fr; }
  .testimonial-featured { padding: 32px 28px; }
  .tweet-img { max-width: 100%; }
  .nav-logo { font-size: 0.95rem; }
}

/* =========================================
   CTA BANNER
   ========================================= */
.cta-banner {
  background: linear-gradient(135deg, #0d2818 0%, #0a1a0f 50%, #0d2010 100%);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 88px 0;
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.cta-text h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 800; margin-bottom: 14px; letter-spacing: -0.5px; }
.cta-text p { color: var(--text-muted); max-width: 480px; font-size: 1rem; line-height: 1.7; }
.cta-actions { display: flex; flex-direction: column; align-items: center; gap: 14px; flex-shrink: 0; }
.cta-btn { padding: 16px 36px; font-size: 1rem; }
.cta-email { color: var(--text-muted); font-size: 0.88rem; text-decoration: none; transition: color var(--transition); }
.cta-email:hover { color: var(--green); }

@media (max-width: 768px) {
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-text p { max-width: 100%; }
  .cta-actions { width: 100%; }
  .cta-btn { width: 100%; justify-content: center; }
}

/* =========================================
   FOOTER
   ========================================= */
footer { background: #050505; padding: 52px 0 36px; border-top: 1px solid rgba(255,255,255,0.04); }
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 28px; text-align: center; }
.footer-brand p { color: var(--text-muted); font-size: 0.88rem; margin-top: 8px; font-style: italic; }
.footer-links { display: flex; gap: 36px; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-muted); text-decoration: none; font-size: 0.88rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--green); }
.footer-copy { color: rgba(255,255,255,0.2); font-size: 0.78rem; }
.footer-whid-link { color: var(--green); text-decoration: none; }
.footer-whid-link:hover { text-decoration: underline; }