/* ═══════════════════════════════════════════
   RAFAEL SOSA ORTIZ — Personal Web
   style.css — Negro & Naranja
═══════════════════════════════════════════ */

/* ── VARIABLES ── */
:root {
  --bg:         #0a0a0a;
  --bg2:        #0f0f0f;
  --bg3:        #141414;
  --bg4:        #1a1a1a;
  --accent:     #ff6b00;
  --accent2:    #ff9a3c;
  --accent-dim: rgba(255, 107, 0, 0.15);
  --accent-glow:rgba(255, 107, 0, 0.25);
  --green:      #39ff14;
  --text:       #e0d8d0;
  --text-dim:   #6b6058;
  --border:     rgba(255, 107, 0, 0.12);
  --border-b:   rgba(255, 107, 0, 0.35);
  --font-mono:  'Share Tech Mono', monospace;
  --font-body:  'Exo 2', sans-serif;
  --glow:       0 0 20px rgba(255, 107, 0, 0.25);
  --glow-lg:    0 0 40px rgba(255, 107, 0, 0.18);
  --radius:     4px;
  --nav-h:      64px;

  /* Loader keeps cyan — solo el loading es tecnológico */
  --loader-accent: #00e5ff;
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: var(--accent); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ══════════════════════════════════════════
   LOADER — mantiene estética cian tecnológica
══════════════════════════════════════════ */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: #020406;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.loader-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridMove 4s linear infinite;
}
@keyframes gridMove { to { background-position: 40px 40px; } }

.loader-scanline {
  position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(
    0deg, transparent 0px, transparent 3px,
    rgba(0,0,0,0.15) 3px, rgba(0,0,0,0.15) 4px
  );
}

.loader-corners {
  position: absolute; inset: 20px; pointer-events: none;
}
.loader-corners span {
  position: absolute; width: 30px; height: 30px;
  border-color: var(--loader-accent); border-style: solid;
}
.loader-corners span:nth-child(1) { top: 0; left: 0; border-width: 2px 0 0 2px; }
.loader-corners span:nth-child(2) { top: 0; right: 0; border-width: 2px 2px 0 0; }
.loader-corners span:nth-child(3) { bottom: 0; left: 0; border-width: 0 0 2px 2px; }
.loader-corners span:nth-child(4) { bottom: 0; right: 0; border-width: 0 2px 2px 0; }

.loader-content {
  position: relative; z-index: 2; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}
.loader-logo {
  font-family: var(--font-mono); font-size: 4rem; font-weight: 900;
  color: var(--loader-accent);
  text-shadow: 0 0 30px var(--loader-accent), 0 0 60px rgba(0,229,255,.4);
  letter-spacing: 0.2em;
  animation: loaderPulse 2s ease-in-out infinite;
}
@keyframes loaderPulse {
  0%,100% { text-shadow: 0 0 30px var(--loader-accent), 0 0 60px rgba(0,229,255,.4); }
  50%      { text-shadow: 0 0 50px var(--loader-accent), 0 0 100px rgba(0,229,255,.6); }
}
.loader-bar-wrap {
  width: 320px; height: 4px; background: rgba(0,229,255,.1);
  border: 1px solid rgba(0,229,255,.2); border-radius: 2px; overflow: hidden;
}
.loader-bar {
  height: 100%; width: 0%; background: var(--loader-accent);
  box-shadow: 0 0 12px var(--loader-accent);
  transition: width 0.1s linear;
}
.loader-text {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--loader-accent); letter-spacing: 0.2em; opacity: 0.8;
}
.loader-pct {
  font-family: var(--font-mono); font-size: 2rem;
  color: #fff; letter-spacing: 0.1em;
}

/* ══════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}
#navbar.scrolled {
  background: rgba(10, 10, 10, 0.99);
  border-color: var(--border-b);
  box-shadow: 0 2px 20px rgba(255,107,0,.08);
}

.nav-brand {
  font-family: var(--font-body); font-size: 1.05rem;
  font-weight: 700; color: #fff; letter-spacing: 0.04em;
}
.nav-brand span { color: var(--accent); }

.nav-links { display: flex; gap: 4px; }
.nav-link {
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 500;
  color: var(--text-dim); padding: 8px 16px;
  border-radius: var(--radius); border: 1px solid transparent;
  transition: all 0.22s ease; letter-spacing: 0.02em;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
  border-color: var(--border-b);
  background: var(--accent-dim);
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--accent); transition: all 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
#hero {
  min-height: 100vh; padding-top: var(--nav-h);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 50% 100%, rgba(255,107,0,.06) 0%, transparent 70%);
}

.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,107,0,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,107,0,.025) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glitch-lines { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-glitch-lines::before, .hero-glitch-lines::after {
  content: ''; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4; animation: scanH 10s linear infinite;
}
.hero-glitch-lines::after { animation-delay: 5s; opacity: 0.2; }
@keyframes scanH { 0% { top: -2px; } 100% { top: 100%; } }

.hero-inner {
  display: grid; grid-template-columns: auto 1fr;
  gap: 60px; align-items: center;
  max-width: 1100px; width: 100%; padding: 60px 40px;
  position: relative; z-index: 2;
}

/* ── Photo Frame ── */
.photo-frame {
  position: relative; width: 260px; height: 320px;
  background: var(--bg3);
  border: 1px solid var(--border-b);
  overflow: hidden;
  box-shadow: var(--glow-lg);
}
.photo-frame::after {
  content: ''; position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(to bottom, transparent 75%, rgba(10,10,10,.6) 100%);
}

.photo-corner {
  position: absolute; width: 18px; height: 18px; z-index: 4;
  border-color: var(--accent); border-style: solid;
}
.photo-corner.tl { top: 8px; left: 8px; border-width: 2px 0 0 2px; }
.photo-corner.tr { top: 8px; right: 8px; border-width: 2px 2px 0 0; }
.photo-corner.bl { bottom: 8px; left: 8px; border-width: 0 0 2px 2px; }
.photo-corner.br { bottom: 8px; right: 8px; border-width: 0 2px 2px 0; }

.photo-scan {
  position: absolute; left: 0; right: 0; height: 2px; z-index: 3;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: photoScan 3s ease-in-out infinite; opacity: 0.5;
}
@keyframes photoScan { 0%,100% { top: 0; } 50% { top: calc(100% - 2px); } }

#profilePhoto {
  width: 100%; height: calc(100% - 32px);
  object-fit: cover; object-position: top center;
  display: block;
}

.photo-hud {
  position: absolute; bottom: 0; left: 0; right: 0; height: 32px;
  background: rgba(255,107,0,.08); border-top: 1px solid var(--border-b);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 12px;
  font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-dim);
  z-index: 5;
}
.ph-status { color: var(--green); text-shadow: 0 0 8px var(--green); }

/* ── Hero Text ── */
.hero-tag {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--accent); letter-spacing: 0.18em; margin-bottom: 12px;
}
.hero-name {
  display: flex; flex-direction: column; line-height: 1;
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 900; color: #fff; letter-spacing: -0.02em; margin-bottom: 20px;
}

.glitch { position: relative; display: inline-block; }
.glitch::before, .glitch::after {
  content: attr(data-text); position: absolute; left: 0; top: 0; width: 100%;
}
.glitch::before {
  color: var(--accent); animation: glitch1 5s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 35%, 0 35%);
}
.glitch::after {
  color: var(--accent2); animation: glitch2 5s infinite;
  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
}
@keyframes glitch1 {
  0%,94%,100% { transform: none; opacity: 0; }
  95% { transform: translateX(-3px); opacity: 0.7; }
  98% { transform: translateX(3px); opacity: 0.7; }
}
@keyframes glitch2 {
  0%,94%,100% { transform: none; opacity: 0; }
  96% { transform: translateX(3px); opacity: 0.7; }
  99% { transform: translateX(-3px); opacity: 0.7; }
}

.hero-role {
  font-family: var(--font-mono); font-size: 1.05rem;
  color: var(--accent); margin-bottom: 20px; height: 28px;
}
.role-prefix { margin-right: 8px; opacity: 0.5; }
.cursor-blink { animation: blink 1s step-end infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

.hero-desc { color: var(--text-dim); font-size: 0.95rem; max-width: 520px; margin-bottom: 32px; }

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

.btn-primary, .btn-secondary {
  font-family: var(--font-body); font-weight: 600; font-size: 0.82rem;
  letter-spacing: 0.08em; padding: 13px 28px;
  border-radius: var(--radius); cursor: pointer; display: inline-block;
  transition: all 0.25s ease; border: none; text-transform: uppercase;
}
.btn-primary {
  background: var(--accent); color: #000;
  box-shadow: 0 0 20px rgba(255,107,0,.3);
}
.btn-primary:hover {
  background: var(--accent2); color: #000;
  box-shadow: 0 0 30px rgba(255,107,0,.55);
  transform: translateY(-2px);
}
.btn-secondary {
  background: transparent; color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-secondary:hover {
  background: var(--accent-dim);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}
.btn-full { width: 100%; text-align: center; display: block; }

.hero-stats { display: flex; gap: 40px; }
.stat-n {
  font-family: var(--font-mono); font-size: 1.8rem;
  color: var(--accent); font-weight: 700; line-height: 1; display: block;
}
.stat-l { font-size: 0.7rem; color: var(--text-dim); letter-spacing: 0.1em; }

.hero-scroll-hint {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.2em; color: var(--text-dim);
}
.scroll-arrow {
  width: 18px; height: 18px;
  border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent);
  transform: rotate(45deg); animation: bounce 2s infinite;
}
@keyframes bounce { 0%,100% { transform: rotate(45deg) translateY(0); } 50% { transform: rotate(45deg) translateY(6px); } }

/* ══════════════════════════════════════════
   SECTIONS COMMON
══════════════════════════════════════════ */
.section { padding: 100px 0; }
.section-dark { background: var(--bg2); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 40px; }

.section-header {
  display: flex; align-items: center; gap: 20px; margin-bottom: 60px;
}
.section-title {
  font-size: 1.9rem; font-weight: 900; color: #fff; letter-spacing: 0.06em; white-space: nowrap;
}
.title-dot { color: var(--accent); }
.section-line { flex: 1; height: 1px; background: var(--border); }

/* ══════════════════════════════════════════
   ABOUT
══════════════════════════════════════════ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.about-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 30px; position: relative; overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.about-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.about-card:hover { border-color: var(--border-b); box-shadow: var(--glow); }

.card-tag {
  font-family: var(--font-mono); font-size: 0.65rem; color: var(--accent);
  letter-spacing: 0.18em; margin-bottom: 16px;
}
.about-card p { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 12px; }

.data-list { display: flex; flex-direction: column; gap: 12px; }
.data-list li { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.dl-key {
  font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-dim);
  letter-spacing: 0.1em; flex-shrink: 0;
}
.dl-val { font-size: 0.85rem; color: var(--text); text-align: right; }
.status-dot {
  display: inline-block; width: 7px; height: 7px; background: var(--green);
  border-radius: 50%; box-shadow: 0 0 6px var(--green);
  animation: sPulse 2s ease infinite; margin-right: 6px;
}
@keyframes sPulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ══════════════════════════════════════════
   SKILLS
══════════════════════════════════════════ */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 40px; }
.skill-block {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
  transition: border-color 0.3s;
}
.skill-block:hover { border-color: var(--border-b); }
.skill-block-title {
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--accent);
  letter-spacing: 0.08em; margin-bottom: 20px;
}
.skill-item { margin-bottom: 14px; }
.skill-item span { font-size: 0.8rem; color: var(--text-dim); display: block; margin-bottom: 6px; }
.skill-bar {
  height: 4px; background: rgba(255,107,0,.1); border-radius: 2px; overflow: hidden;
}
.skill-fill {
  height: 100%; width: 0%; background: var(--accent);
  box-shadow: 0 0 8px rgba(255,107,0,.5); border-radius: 2px; transition: width 1s ease;
}

.tags-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tech-tag {
  font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.08em;
  padding: 6px 14px; border: 1px solid var(--border-b);
  border-radius: 2px; color: var(--accent); background: var(--accent-dim);
  transition: all 0.2s;
}
.tech-tag:hover { background: rgba(255,107,0,.2); box-shadow: 0 0 10px rgba(255,107,0,.2); }

/* ══════════════════════════════════════════
   TIMELINE
══════════════════════════════════════════ */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: ''; position: absolute; left: 0; top: 8px; bottom: 0;
  width: 1px; background: linear-gradient(var(--accent), transparent);
}
.tl-item { position: relative; margin-bottom: 48px; }
.tl-dot {
  position: absolute; left: -34px; top: 6px;
  width: 10px; height: 10px; background: var(--accent);
  border-radius: 50%; box-shadow: 0 0 10px var(--accent);
}
.tl-date {
  font-family: var(--font-mono); font-size: 0.63rem; color: var(--accent);
  letter-spacing: 0.08em; margin-bottom: 8px;
}
.tl-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 28px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.tl-card:hover { border-color: var(--border-b); box-shadow: var(--glow); }
.tl-company {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--accent);
  letter-spacing: 0.12em; font-weight: 700;
}
.tl-role { font-size: 1rem; font-weight: 700; color: #fff; margin: 4px 0; }
.tl-location { font-family: var(--font-mono); font-size: 0.63rem; color: var(--text-dim); margin-bottom: 14px; }
.tl-list { display: flex; flex-direction: column; gap: 8px; }
.tl-list li { font-size: 0.85rem; color: var(--text-dim); padding-left: 16px; position: relative; }
.tl-list li::before { content: '▸'; position: absolute; left: 0; color: var(--accent); font-size: 0.7rem; }

/* ══════════════════════════════════════════
   PROJECTS
══════════════════════════════════════════ */
.projects-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.proj-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px; position: relative; overflow: hidden;
  transition: all 0.3s ease;
}
.proj-card:hover { border-color: var(--border-b); box-shadow: var(--glow-lg); transform: translateY(-4px); }
.proj-num { font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-dim); letter-spacing: 0.1em; margin-bottom: 14px; }
.proj-icon { font-size: 2rem; margin-bottom: 12px; }
.proj-title { font-size: 1.08rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
.proj-period { font-family: var(--font-mono); font-size: 0.6rem; color: var(--accent); margin-bottom: 14px; opacity: 0.75; }
.proj-desc { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 20px; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.proj-tags span {
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.08em;
  padding: 4px 10px; border: 1px solid var(--border); color: var(--text-dim); border-radius: 2px;
}

/* ══════════════════════════════════════════
   EDUCATION
══════════════════════════════════════════ */
.edu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 50px; }
.edu-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  border-left: 3px solid var(--accent); transition: box-shadow 0.3s;
}
.edu-card:hover { box-shadow: var(--glow); }
.edu-year { font-family: var(--font-mono); font-size: 0.65rem; color: var(--accent); margin-bottom: 8px; }
.edu-title { font-size: 1rem; font-weight: 700; color: #fff; }
.edu-sub { font-size: 0.8rem; color: var(--text-dim); margin: 4px 0; }
.edu-inst { font-family: var(--font-mono); font-size: 0.63rem; color: var(--text-dim); }

.cert-title {
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--accent);
  letter-spacing: 0.18em; margin-bottom: 24px;
}
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cert-card {
  background: var(--accent-dim); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; transition: all 0.3s;
}
.cert-card:hover { border-color: var(--border-b); transform: translateY(-2px); }
.cert-year { font-family: var(--font-mono); font-size: 0.6rem; color: var(--accent); margin-bottom: 8px; }
.cert-name { font-size: 0.85rem; font-weight: 600; color: #fff; margin-bottom: 6px; }
.cert-org { font-size: 0.75rem; color: var(--text-dim); }

/* ══════════════════════════════════════════
   CONTACT
══════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item { display: flex; align-items: flex-start; gap: 18px; }
.ci-icon {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-b); color: var(--accent); font-size: 1.1rem;
  flex-shrink: 0; border-radius: var(--radius);
}
.ci-label { font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-dim); letter-spacing: 0.12em; margin-bottom: 4px; }
.ci-val { font-size: 0.9rem; color: var(--text); transition: color 0.2s; }
a.ci-val:hover { color: var(--accent); }

.form-tag { font-family: var(--font-mono); font-size: 0.65rem; color: var(--accent); letter-spacing: 0.15em; margin-bottom: 20px; }
.form-row { margin-bottom: 14px; }
.form-input {
  width: 100%; background: var(--bg3); border: 1px solid var(--border);
  color: var(--text); font-family: var(--font-body); font-size: 0.9rem;
  padding: 12px 16px; border-radius: var(--radius); outline: none;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 10px rgba(255,107,0,.15); }
.form-input::placeholder { color: var(--text-dim); }
.form-textarea { resize: vertical; min-height: 120px; }

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
footer {
  border-top: 1px solid var(--border); padding: 24px 40px; background: var(--bg);
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-brand { font-family: var(--font-body); font-weight: 700; font-size: 0.9rem; color: var(--accent); }
.footer-copy { font-size: 0.75rem; color: var(--text-dim); }
.footer-status { font-family: var(--font-mono); font-size: 0.65rem; color: var(--green); display: flex; align-items: center; gap: 6px; }
.footer-status .status-dot { background: var(--green); box-shadow: 0 0 6px var(--green); }

/* ══════════════════════════════════════════
   SCROLL REVEAL
══════════════════════════════════════════ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; gap: 36px; justify-items: center; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .about-grid, .projects-grid, .edu-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  #navbar { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(10,10,10,.98); padding: 20px;
    border-bottom: 1px solid var(--border); gap: 4px;
  }
  .container { padding: 0 20px; }
  .section { padding: 70px 0; }
  .photo-frame { width: 210px; height: 260px; }
  footer { padding: 20px; }
  .footer-inner { flex-direction: column; text-align: center; }
}