/* ═══════════════════════════════════════════════════════════
   ENGR. MALIK. — PORTFOLIO STYLESHEET
   ═══════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────
   DESIGN TOKENS
───────────────────────────────────────── */
:root {
  --cream:        #F5EEE3;
  --cream-deep:   #EDE3D3;
  --cream-border: rgba(92,61,32,0.13);
  --brown:        #261200;
  --brown-mid:    #5A3A18;
  --brown-soft:   #8B6540;
  --rust:         #B55C18;
  --rust-hover:   #C46E2A;
  --rust-subtle:  rgba(181,92,24,0.10);
  --shadow:       rgba(38,18,0,0.07);
  --shadow-deep:  rgba(38,18,0,0.16);
}

/* ─────────────────────────────────────────
   RESET
───────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--cream);
  color: var(--brown);
  font-family: 'DM Sans', sans-serif;
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
}
h1, h2, h3, h4 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  line-height: 1.15;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ─────────────────────────────────────────
   SCROLLBAR
───────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--cream-deep); }
::-webkit-scrollbar-thumb { background: var(--brown-soft); }

/* ─────────────────────────────────────────
   NAVIGATION
───────────────────────────────────────── */
nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4rem;
  background: rgba(245,238,227,0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--cream-border);
  transition: height .3s ease, box-shadow .3s ease;
}
nav.scrolled {
  height: 62px;
  box-shadow: 0 4px 28px var(--shadow);
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: baseline;
  gap: .18em;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--brown);
  letter-spacing: .04em;
  position: relative;
}
.logo .dot { color: var(--rust); font-style: italic; }
.logo::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--rust);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.logo:hover::after { transform: scaleX(1); }

/* Desktop nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.4rem;
}
.nav-links a {
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brown-mid);
  position: relative;
  transition: color .3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--rust);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s;
}
.nav-links a:hover { color: var(--rust); }
.nav-links a:hover::after { transform: scaleX(1); }

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  z-index: 10001;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--brown);
  transition: transform .3s ease, opacity .3s ease;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--cream);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .38s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.6rem;
  font-weight: 500;
  color: var(--brown);
  letter-spacing: .05em;
  transition: color .3s;
}
.mobile-menu a:hover { color: var(--rust); }
.mobile-menu-close {
  position: absolute;
  top: 1.6rem; right: 1.6rem;
  font-size: 2rem;
  cursor: pointer;
  color: var(--brown-soft);
  transition: color .3s;
}
.mobile-menu-close:hover { color: var(--rust); }

/* ─────────────────────────────────────────
   HERO
───────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}
/* Cream vignette — protects text legibility */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(
    ellipse 55% 50% at 50% 50%,
    rgba(245,238,227,0.72) 0%,
    rgba(245,238,227,0.45) 45%,
    rgba(245,238,227,0.82) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1.5rem;
  max-width: 860px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: riseUp .9s cubic-bezier(.22,1,.36,1) .3s forwards;
}
.hero-name {
  font-size: clamp(3rem, 8vw, 6.4rem);
  font-weight: 600;
  color: var(--brown);
  letter-spacing: -.015em;
  line-height: 1.04;
  margin-bottom: 1rem;
  opacity: 0;
  animation: riseUp .9s cubic-bezier(.22,1,.36,1) .55s forwards;
}
.hero-subtitle {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.2rem, 3vw, 1.85rem);
  font-weight: 300;
  font-style: italic;
  color: var(--rust);
  letter-spacing: .08em;
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: riseUp .9s cubic-bezier(.22,1,.36,1) .75s forwards;
}
.hero-body {
  font-size: clamp(.92rem, 1.4vw, 1.06rem);
  color: var(--brown-mid);
  max-width: 520px;
  margin: 0 auto 2.75rem;
  opacity: 0;
  animation: riseUp .9s cubic-bezier(.22,1,.36,1) .95s forwards;
}
.hero-cta {
  opacity: 0;
  animation: riseUp .9s cubic-bezier(.22,1,.36,1) 1.1s forwards;
}
.btn-primary {
  display: inline-block;
  padding: .9rem 2.6rem;
  background: var(--brown);
  color: var(--cream);
  font-family: 'DM Sans', sans-serif;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  border: 2px solid var(--brown);
  transition: background .35s, border-color .35s, transform .35s, box-shadow .35s;
}
.btn-primary:hover {
  background: var(--rust);
  border-color: var(--rust);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(181,92,24,.28);
}

/* ─────────────────────────────────────────
   SECTION COMMON
───────────────────────────────────────── */
section { padding: 7rem 4rem; }
.section-inner { max-width: 1160px; margin: 0 auto; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 1.1rem;
}
.section-label::before {
  content: '';
  display: block;
  width: 30px; height: 1.5px;
  background: var(--rust);
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.1rem);
  color: var(--brown);
  margin-bottom: 3.5rem;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition:
    opacity .85s cubic-bezier(.22,1,.36,1),
    transform .85s cubic-bezier(.22,1,.36,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .18s; }
.reveal-d3 { transition-delay: .28s; }
.reveal-d4 { transition-delay: .38s; }
.reveal-d5 { transition-delay: .48s; }

/* ─────────────────────────────────────────
   ABOUT
───────────────────────────────────────── */
#about {
  background: var(--cream);
  border-top: 1px solid var(--cream-border);
}
.about-layout {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 5rem;
  align-items: start;
}
.about-text p {
  font-size: 1.035rem;
  color: var(--brown-mid);
  line-height: 1.88;
  margin-bottom: 1.3rem;
}
.about-text p:last-child { margin-bottom: 0; }
.about-highlight {
  display: inline;
  color: var(--rust);
  font-style: italic;
}

.about-sidebar { display: flex; flex-direction: column; gap: 1.6rem; }
.stat-card {
  padding: 1.75rem 1.85rem;
  border: 1px solid var(--cream-border);
  background: rgba(255,255,255,0.28);
  position: relative;
  overflow: hidden;
  transition: box-shadow .35s;
}
.stat-card:hover { box-shadow: 0 6px 28px var(--shadow); }
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--rust);
}
.stat-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem;
  font-weight: 600;
  color: var(--brown);
  line-height: 1;
  margin-bottom: .35rem;
}
.stat-label {
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--brown-soft);
}
.discipline-badge {
  display: inline-block;
  margin-top: .85rem;
  padding: .3rem .9rem;
  border: 1px solid var(--cream-border);
  font-size: .76rem;
  letter-spacing: .07em;
  color: var(--brown-mid);
  background: var(--cream);
}

/* ─────────────────────────────────────────
   SKILLS
───────────────────────────────────────── */
#skills {
  background: var(--cream-deep);
  border-top: 1px solid var(--cream-border);
  border-bottom: 1px solid var(--cream-border);
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.skill-card {
  background: var(--cream);
  border: 1px solid var(--cream-border);
  padding: 2.4rem 2.1rem;
  transition: box-shadow .35s, transform .35s;
}
.skill-card:hover {
  box-shadow: 0 8px 32px var(--shadow-deep);
  transform: translateY(-3px);
}
.skill-card-head {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid var(--cream-border);
  margin-bottom: 1.8rem;
}
.skill-icon-box {
  width: 44px; height: 44px;
  border: 1.5px solid var(--rust);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.skill-icon-box svg {
  width: 20px; height: 20px;
  stroke: var(--rust);
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.skill-cat-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--brown);
}
.skill-items { display: flex; flex-direction: column; gap: .95rem; }
.skill-item {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-size: .93rem;
  color: var(--brown-mid);
}
.skill-diamond {
  width: 7px; height: 7px;
  background: var(--rust);
  transform: rotate(45deg);
  flex-shrink: 0;
  opacity: .75;
}

/* ─────────────────────────────────────────
   PROJECTS
───────────────────────────────────────── */
#projects {
  background: var(--cream);
  border-top: 1px solid var(--cream-border);
}
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
}
.project-link { display: block; }
.project-card {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #180C02;
  cursor: pointer;
  transition: transform .5s cubic-bezier(.22,1,.36,1), box-shadow .5s ease;
}
.project-card:hover {
  transform: scale(1.026);
  box-shadow: 0 24px 64px rgba(38,18,0,.22);
}
.project-card video {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .65;
  transition: opacity .45s;
}
.project-card:hover video { opacity: .45; }
.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8,4,0,.92) 0%,
    rgba(8,4,0,.35) 45%,
    transparent 100%
  );
  z-index: 1;
}
.project-body {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.8rem 2rem;
  z-index: 2;
  transform: translateY(5px);
  transition: transform .4s ease;
}
.project-card:hover .project-body { transform: translateY(0); }
.project-series {
  font-size: .66rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--rust-hover);
  margin-bottom: .55rem;
}
.project-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.55rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  margin-bottom: .45rem;
}
.project-desc {
  font-size: .83rem;
  color: rgba(255,255,255,.68);
  line-height: 1.55;
}
.project-arrow-btn {
  position: absolute;
  top: 1.4rem; right: 1.4rem;
  z-index: 2;
  width: 42px; height: 42px;
  border: 1px solid rgba(255,255,255,.22);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity .4s, transform .4s;
}
.project-card:hover .project-arrow-btn {
  opacity: 1;
  transform: translateY(0);
}

/* ─────────────────────────────────────────
   EXPERIENCE
───────────────────────────────────────── */
#experience {
  background: var(--cream-deep);
  border-top: 1px solid var(--cream-border);
}
.timeline {
  position: relative;
  padding-left: 3.2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--rust) 0%, var(--cream-border) 100%);
}
.tl-item {
  position: relative;
  padding-bottom: 3.5rem;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -3.2rem; top: .42rem;
  transform: translateX(-4px);
  width: 9px; height: 9px;
  background: var(--rust);
  border-radius: 50%;
  border: 2.5px solid var(--cream-deep);
  box-shadow: 0 0 0 3px var(--rust-subtle);
}
.tl-period {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: .5rem;
}
.tl-role {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: .22rem;
}
.tl-company {
  font-size: .88rem;
  font-weight: 500;
  color: var(--brown-soft);
  letter-spacing: .06em;
  margin-bottom: .95rem;
}
.tl-desc {
  font-size: .935rem;
  color: var(--brown-mid);
  line-height: 1.82;
  max-width: 660px;
}
.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: 1.1rem;
}
.tl-tag {
  padding: .28rem .85rem;
  border: 1px solid var(--cream-border);
  font-size: .73rem;
  font-weight: 500;
  letter-spacing: .07em;
  color: var(--brown-mid);
  background: var(--cream);
}

/* ─────────────────────────────────────────
   CONTACT
───────────────────────────────────────── */
#contact {
  background: var(--cream);
  border-top: 1px solid var(--cream-border);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 5rem;
  align-items: start;
}
.contact-tagline {
  font-size: 1.02rem;
  color: var(--brown-mid);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.45rem;
}
.c-icon {
  width: 40px; height: 40px;
  border: 1px solid var(--cream-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: .05rem;
}
.c-icon svg {
  width: 16px; height: 16px;
  stroke: var(--rust);
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.c-detail-inner strong {
  display: block;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--brown-soft);
  margin-bottom: .22rem;
}
.c-detail-inner span,
.c-detail-inner a {
  font-size: .92rem;
  color: var(--brown-mid);
  transition: color .3s;
}
.c-detail-inner a:hover { color: var(--rust); }
.social-links {
  display: flex;
  gap: .9rem;
  flex-wrap: wrap;
  margin-top: 2.4rem;
}
.soc-btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .6rem 1.25rem;
  border: 1px solid var(--cream-border);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .07em;
  color: var(--brown-mid);
  transition: border-color .3s, color .3s;
}
.soc-btn svg {
  width: 14px; height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.soc-btn:hover {
  border-color: var(--rust);
  color: var(--rust);
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: .38rem;
}
.form-field label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--brown-soft);
}
.form-field input,
.form-field textarea {
  padding: .85rem 1rem;
  border: 1.5px solid var(--cream-border);
  background: transparent;
  font-family: 'DM Sans', sans-serif;
  font-size: .935rem;
  color: var(--brown);
  outline: none;
  resize: none;
  transition: border-color .3s;
  -webkit-appearance: none;
}
.form-field input:focus,
.form-field textarea:focus { border-color: var(--rust); }
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--brown-soft);
  opacity: .55;
}
.btn-submit {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  padding: .9rem 2.2rem;
  background: var(--brown);
  color: var(--cream);
  font-family: 'DM Sans', sans-serif;
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  border: 2px solid var(--brown);
  cursor: pointer;
  align-self: flex-start;
  transition: background .35s, border-color .35s, transform .35s;
}
.btn-submit:hover {
  background: var(--rust);
  border-color: var(--rust);
  transform: translateY(-2px);
}
.btn-submit svg {
  width: 15px; height: 15px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.form-success {
  display: none;
  padding: 1.1rem 1.4rem;
  border: 1px solid rgba(181,92,24,.3);
  background: var(--rust-subtle);
  color: var(--rust);
  font-size: .88rem;
  font-weight: 500;
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
footer {
  padding: 1.85rem 4rem;
  border-top: 1px solid var(--cream-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--cream);
}
.footer-logo {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--brown);
}
.footer-copy {
  font-size: .76rem;
  color: var(--brown-soft);
  letter-spacing: .05em;
}

/* ─────────────────────────────────────────
   KEYFRAMES
───────────────────────────────────────── */
@keyframes riseUp {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes linePulse {
  0%, 100% { opacity: .4; transform: scaleY(1); }
  50%       { opacity: 1; transform: scaleY(1.1); }
}

/* ─────────────────────────────────────────
   RESPONSIVE
───────────────────────────────────────── */
@media (max-width: 1080px) {
  section { padding: 5.5rem 2.5rem; }
  nav { padding: 0 2.5rem; }
  footer { padding: 1.6rem 2.5rem; }
  .about-layout { gap: 3rem; }
}
@media (max-width: 800px) {
  section { padding: 4.5rem 1.5rem; }
  nav { padding: 0 1.5rem; }
  footer { padding: 1.5rem; flex-direction: column; gap: .6rem; text-align: center; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
  .about-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }
  .social-links { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .timeline { padding-left: 2rem; }
  .tl-dot { left: -2rem; }
  .hero-name { letter-spacing: -.02em; }
}