/* =============================================================================
  sections.css — Navbar, Hero, About, Skills, Projects, Contact, Footer
  Author : Aaron Dela Cruz
  Updated: 2025
   ============================================================================= */

/* ─── Navbar ──────────────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height); z-index: 1000;
  transition: var(--transition-normal);
}
.nav--scrolled {
  background: rgba(5,8,16,.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
}
.nav-inner {
  max-width: var(--container-max); margin: 0 auto; padding: 0 2rem;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display); font-weight: 800; font-size: 1.15rem;
  color: var(--clr-text); display: flex; align-items: center; gap: .5rem;
  transition: var(--transition-fast);
}
.nav-logo:hover { color: var(--clr-accent); }
.nav-logo-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--clr-accent); box-shadow: 0 0 10px var(--clr-accent);
}
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a {
  font-family: var(--font-display); font-size: .88rem; font-weight: 600;
  color: var(--clr-text-muted); transition: var(--transition-fast);
  position: relative; padding-bottom: 2px;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1.5px; background: var(--clr-accent);
  transition: var(--transition-normal);
}
.nav-links a:hover,
.nav-links a.active { color: var(--clr-text); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-toggle {
  display: none; color: var(--clr-text); font-size: 1.2rem;
  width: 40px; height: 40px; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); border: 1px solid var(--clr-border);
  transition: var(--transition-fast);
}
.nav-toggle:hover { border-color: var(--clr-accent); color: var(--clr-accent); }

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-height); left: 0; right: 0;
    background: rgba(5,8,16,.97); backdrop-filter: blur(20px);
    flex-direction: column; padding: 1.5rem 2rem; gap: 1rem;
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-110%); transition: transform var(--transition-normal);
    z-index: 999;
  }
  .nav-links--open { transform: translateY(0); }
  .nav-links a { font-size: 1.05rem; padding: .4rem 0; }
}

/* ─── Hero ────────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--nav-height); overflow: hidden; position: relative;
}
.hero-inner {
  padding: 5rem 0 4rem;
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; gap: 3rem;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .35rem 1rem; background: var(--clr-surface);
  border: 1px solid var(--clr-border-2); border-radius: var(--radius-full);
  font-family: var(--font-mono); font-size: .76rem;
  color: var(--clr-accent); margin-bottom: 1.5rem;
  animation: fadeUp .8s ease both;
}
.hero-eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--clr-accent-3);
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 800; line-height: 1.0; margin-bottom: 1rem;
  animation: fadeUp .8s ease .1s both;
}
.hero-title-line { display: block; }
.hero-title-accent {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-3) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-role {
  font-size: 1.05rem; color: var(--clr-text-muted);
  margin-bottom: 1.5rem; animation: fadeUp .8s ease .2s both;
  height: 1.7em; overflow: hidden;
}
.typing-text   { color: var(--clr-accent-3); font-weight: 500; }
.typing-cursor {
  display: inline-block; width: 2px; height: 1.05em;
  background: var(--clr-accent-3); margin-left: 2px;
  vertical-align: text-bottom; animation: cursBlink .8s step-end infinite;
}
@keyframes cursBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-desc {
  font-size: .98rem; color: var(--clr-text-muted); line-height: 1.75;
  max-width: 460px; margin-bottom: 2rem; animation: fadeUp .8s ease .3s both;
}
.hero-cta   { display: flex; gap: 1rem; flex-wrap: wrap; animation: fadeUp .8s ease .4s both; }
.hero-visual {
  position: relative; display: flex; align-items: center; justify-content: center;
  animation: fadeUp .8s ease .5s both;
}
.hero-avatar-wrap { position: relative; width: 280px; height: 280px; }
.hero-avatar-ring {
  position: absolute; inset: -18px; border-radius: 50%;
  border: 1px solid var(--clr-border-2);
  animation: ringRot 15s linear infinite;
}
.hero-avatar-ring-2 {
  inset: -38px; border-color: rgba(77,166,255,.08);
  animation-duration: 25s; animation-direction: reverse;
}
.hero-avatar-ring::before {
  content: ''; position: absolute; top: -3px; left: 50%; transform: translateX(-50%);
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--clr-accent); box-shadow: 0 0 10px var(--clr-accent);
}
@keyframes ringRot { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.hero-avatar {
  width: 100%; height: 100%;
  border-radius: 40% 60% 55% 45% / 45% 50% 60% 55%;
  background: linear-gradient(135deg, var(--clr-bg-3), var(--clr-bg-2));
  border: 1px solid var(--clr-border-2);
  display: flex; align-items: center; justify-content: center; font-size: 5.5rem;
  overflow: hidden; animation: morphShape 12s ease-in-out infinite alternate;
  box-shadow: 0 0 40px var(--clr-glow), inset 0 0 30px rgba(0,0,0,.5);
}
@keyframes morphShape {
  0%   { border-radius: 40% 60% 55% 45% / 45% 50% 60% 55%; }
  50%  { border-radius: 55% 45% 45% 55% / 60% 40% 60% 40%; }
  100% { border-radius: 45% 55% 60% 40% / 50% 55% 45% 50%; }
}
.hero-stats     { display: flex; gap: 2rem; margin-top: 2rem; animation: fadeUp .8s ease .6s both; }
.hero-stat-num  { font-family: var(--font-display); font-size: 1.9rem; font-weight: 800; line-height: 1; }
.hero-stat-label{ font-size: .76rem; color: var(--clr-text-muted); margin-top: .2rem; }
.hero-stat-sep  { width: 1px; background: var(--clr-border); align-self: stretch; }

.scroll-hint {
  position: absolute; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  color: var(--clr-text-dim); font-size: .7rem;
  font-family: var(--font-mono); letter-spacing: .1em;
  animation: fadeUp 1s ease 1.2s both;
}
.scroll-hint-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, transparent, var(--clr-text-dim));
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine { 0%, 100% { transform: scaleY(1); opacity: .5; } 50% { transform: scaleY(.5); opacity: 1; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-cta   { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-desc  { margin: 0 auto 2rem; }
  .hero-visual{ display: none; }
}

/* ─── About ───────────────────────────────────────────────────────────────── */
#about { background: linear-gradient(to bottom, var(--clr-bg), var(--clr-bg-2)); position: relative; }
.about-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: center; }
.about-img-card {
  width: 100%; aspect-ratio: 4/5; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--clr-bg-3), var(--clr-bg-2));
  border: 1px solid var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 7rem; position: relative; overflow: hidden;
}
.about-img-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, var(--clr-bg-2) 0%, transparent 50%);
}
.about-img-badge {
  position: absolute; bottom: -1rem; right: -1rem;
  background: var(--clr-bg-2); border: 1px solid var(--clr-border-2);
  border-radius: var(--radius-md); padding: 1rem; text-align: center;
  box-shadow: 0 4px 30px rgba(0,0,0,.4);
}
.about-img-badge-num   { font-family: var(--font-display); font-size: 1.7rem; font-weight: 800; color: var(--clr-accent); line-height: 1; }
.about-img-badge-label { font-size: .7rem; color: var(--clr-text-muted); }
.about-img-wrap        { position: relative; }
.about-content         { padding-left: .5rem; }
.about-text            { color: var(--clr-text-muted); line-height: 1.8; margin-bottom: 1.5rem; }
.about-highlights      { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 2rem; }
.about-highlight-item  {
  display: flex; align-items: flex-start; gap: .7rem; padding: 1rem;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); transition: var(--transition-normal);
}
.about-highlight-item:hover {
  border-color: var(--clr-border-2); background: var(--clr-surface-2); transform: translateY(-2px);
}
.about-highlight-icon  { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.about-highlight-title { font-family: var(--font-display); font-size: .84rem; font-weight: 700; margin-bottom: .2rem; }
.about-highlight-desc  { font-size: .76rem; color: var(--clr-text-muted); }

@media (max-width: 768px) {
  .about-grid       { grid-template-columns: 1fr; }
  .about-img-wrap   { display: none; }
  .about-content    { padding-left: 0; }
  .about-highlights { grid-template-columns: 1fr; }
}

/* ─── Skills ──────────────────────────────────────────────────────────────── */
#skills { background: var(--clr-bg-2); position: relative; }
.skills-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem; margin-top: 3rem;
}
.skill-category {
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); padding: 1.8rem;
  transition: var(--transition-normal);
}
.skill-category:hover { border-color: var(--clr-border-2); box-shadow: 0 0 40px var(--clr-glow); }
.skill-cat-header { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.5rem; }
.skill-cat-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm); flex-shrink: 0;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-2));
  display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.skill-cat-name   { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.skill-bar-wrap   { margin-bottom: .9rem; }
.skill-bar-label  { display: flex; justify-content: space-between; margin-bottom: .4rem; font-size: .8rem; color: var(--clr-text-muted); }
.skill-bar-label span:last-child { font-family: var(--font-mono); font-size: .73rem; color: var(--clr-accent); }
.skill-bar-track  { height: 4px; background: var(--clr-surface-2); border-radius: var(--radius-full); overflow: hidden; }
.skill-fill {
  height: 100%; border-radius: var(--radius-full); width: 0;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-3));
  transition: width 1.2s cubic-bezier(.25,1,.5,1);
  box-shadow: 0 0 8px var(--clr-glow);
}
.skill-icons { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.2rem; }
.skill-icon  {
  display: flex; flex-direction: column; align-items: center; gap: .4rem;
  padding: .8rem; background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); min-width: 68px;
  transition: var(--transition-spring);
}
.skill-icon:hover { border-color: var(--clr-border-2); transform: translateY(-4px); box-shadow: 0 8px 20px rgba(0,0,0,.3); }
.skill-icon i    { font-size: 1.35rem; color: var(--clr-accent); }
.skill-icon span { font-size: .67rem; color: var(--clr-text-muted); }

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

/* ─── Certifications ────────────────────────────────────────────────────────────── */
#certifications { background: linear-gradient(to bottom, var(--clr-bg), var(--clr-bg-2)); position: relative; }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}
.cert-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  transition: var(--transition-normal);
}
.cert-card:hover {
  transform: translateY(-3px);
  border-color: var(--clr-border-2);
  box-shadow: 0 18px 45px rgba(0, 0, 0, .16);
}
.cert-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.cert-logo {
  width: 54px; height: 54px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-3));
  box-shadow: 0 0 20px rgba(77, 166, 255, .16);
}
.cert-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--clr-accent);
}
.cert-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--clr-text);
}
.cert-desc {
  color: var(--clr-text-muted);
  line-height: 1.8;
  font-size: .95rem;
}
.cert-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
}
.cert-badge {
  padding: .45rem .85rem;
  border-radius: var(--radius-full);
  background: rgba(77, 166, 255, .09);
  border: 1px solid rgba(77, 166, 255, .16);
  color: var(--clr-accent);
  font-family: var(--font-mono);
  font-size: .74rem;
}
.cert-link {
  color: var(--clr-accent-3);
  font-size: .88rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}
.cert-link:hover { color: var(--clr-accent); }

@media (max-width: 900px) { .cert-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 700px) { .cert-grid { grid-template-columns: 1fr; } }

/* ─── Projects ────────────────────────────────────────────────────────────── */
#projects { background: linear-gradient(to bottom, var(--clr-bg-2), var(--clr-bg)); position: relative; }
.projects-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 3rem; flex-wrap: wrap; gap: 1rem;
}
.projects-track { position: relative; height: 460px; overflow: hidden; border-radius: var(--radius-lg); }
.project-card {
  position: absolute; inset: 0;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg); overflow: hidden;
  display: grid; grid-template-columns: 1.1fr 1fr;
  transition: opacity .5s ease, transform .5s ease;
  opacity: 0; pointer-events: none;
  transform: translateX(60px) scale(.97);
}
.project-card.active { opacity: 1; pointer-events: all; transform: translateX(0) scale(1); z-index: 2; }
.project-card.prev   { opacity: 0; transform: translateX(-60px) scale(.97); z-index: 1; }
.project-card.next   { opacity: 0; transform: translateX(60px)  scale(.97); z-index: 1; }
.project-img {
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center; font-size: 5rem;
}
.project-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(0,0,0,.4) 100%);
}
.project-num {
  position: absolute; top: .8rem; left: .8rem;
  font-family: var(--font-mono); font-size: .7rem; color: rgba(255,255,255,.4);
  z-index: 2; background: rgba(0,0,0,.4); padding: .2rem .5rem; border-radius: var(--radius-full);
}
.project-info    { padding: 2rem; display: flex; flex-direction: column; justify-content: space-between; }
.project-meta    { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .8rem; }
.project-title   { font-family: var(--font-display); font-size: 1.45rem; font-weight: 800; color: var(--clr-text); margin-bottom: .6rem; line-height: 1.2; }
.project-desc    { color: var(--clr-text-muted); font-size: .88rem; line-height: 1.7; margin-bottom: 1rem; flex: 1; }
.project-tech    { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.project-actions { display: flex; gap: .6rem; }

.carousel-controls { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1.5rem; }
.carousel-prev,
.carousel-next {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  color: var(--clr-text-muted); display: flex; align-items: center;
  justify-content: center; font-size: .9rem; transition: var(--transition-normal);
}
.carousel-prev:hover,
.carousel-next:hover { border-color: var(--clr-accent); color: var(--clr-accent); transform: scale(1.1); }
.carousel-dots  { display: flex; gap: .4rem; }
.carousel-dot   { width: 6px; height: 6px; border-radius: 50%; background: var(--clr-border); transition: var(--transition-normal); }
.carousel-dot.active { background: var(--clr-accent); width: 20px; border-radius: 3px; box-shadow: 0 0 8px var(--clr-accent); }

@media (max-width: 768px) {
  .projects-track {
    display: flex; overflow-x: auto; gap: 1.5rem;
    scroll-snap-type: x mandatory; height: auto; padding-bottom: 1rem; border-radius: 0;
  }
  .project-card {
    min-width: 85vw; scroll-snap-align: start; flex-shrink: 0;
    opacity: 1; pointer-events: all; position: relative; inset: unset;
    grid-template-columns: 1fr; transform: none !important;
  }
  .project-img      { height: 180px; }
  .carousel-controls{ display: none; }
}

/* ─── Contact ─────────────────────────────────────────────────────────────── */
#contact { background: var(--clr-bg); position: relative; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem; align-items: start; }
.contact-info h3 { font-family: var(--font-display); font-size: 1.7rem; font-weight: 800; margin-bottom: 1rem; }
.contact-info p  { color: var(--clr-text-muted); line-height: 1.7; margin-bottom: 2rem; }
.contact-links   { display: flex; flex-direction: column; gap: .75rem; }
.contact-link    {
  display: flex; align-items: center; gap: 1rem; padding: 1rem;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); transition: var(--transition-normal);
  color: var(--clr-text-muted); font-size: .88rem;
}
.contact-link:hover { border-color: var(--clr-border-2); color: var(--clr-text); transform: translateX(4px); }
.contact-link i     { font-size: 1.1rem; color: var(--clr-accent); width: 20px; text-align: center; }
.contact-form  { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-lg); padding: 2rem; }
.form-group    { margin-bottom: 1.2rem; }
.form-label    { display: block; font-size: .8rem; font-weight: 500; color: var(--clr-text-muted); margin-bottom: .5rem; font-family: var(--font-mono); }
.form-input,
.form-textarea {
  width: 100%; padding: .88rem 1rem;
  background: var(--clr-bg-2); border: 1px solid var(--clr-border);
  border-radius: var(--radius-md); color: var(--clr-text);
  font-size: .93rem; transition: var(--transition-fast); outline: none; resize: none;
}
.form-input:focus,
.form-textarea:focus { border-color: var(--clr-accent); box-shadow: 0 0 0 3px rgba(77,166,255,.1); }
.form-textarea  { min-height: 120px; }
.btn-submit {
  width: 100%; padding: 1rem;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-2));
  color: #fff; border-radius: var(--radius-md);
  font-family: var(--font-display); font-weight: 700; font-size: .95rem;
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  transition: var(--transition-spring);
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--clr-glow); }
.btn-submit.sent  { background: linear-gradient(135deg, var(--clr-accent-3), #00a080); }

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

/* ─── Footer ──────────────────────────────────────────────────────────────── */
.footer { background: var(--clr-bg-2); border-top: 1px solid var(--clr-border); padding: 2rem 0; position: relative; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.footer-copy          { font-size: .82rem; color: var(--clr-text-muted); }
.footer-copy strong   { color: var(--clr-accent); }
.footer-socials       { display: flex; gap: .75rem; }
.footer-social {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  display: flex; align-items: center; justify-content: center;
  font-size: .93rem; color: var(--clr-text-muted);
  transition: var(--transition-spring);
}
.footer-social:hover {
  border-color: var(--clr-accent); color: var(--clr-accent);
  transform: translateY(-3px); box-shadow: 0 4px 16px var(--clr-glow);
}