/* ============================================================
   MOSTAFA MAHMOUD — CINEMATIC HOSPITALITY PORTFOLIO
   Design tokens
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Jost:wght@300;400;500;600&display=swap');

:root{
  --navy-black:#05070c;
  --navy-deep:#0a0f1a;
  --navy:#101a2b;
  --navy-light:#1b2740;
  --gold:#c9a24b;
  --gold-bright:#e8c874;
  --gold-dim:#8a7038;
  --champagne:#f3ead9;
  --champagne-dim:rgba(243,234,217,0.62);
  --line:rgba(201,162,75,0.28);

  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'Jost', sans-serif;

  --ease: cubic-bezier(.22,.7,.24,1);
  --dur-slow: 1.4s;
  --dur-med: .9s;
  --dur-fast: .45s;

  --container: min(1240px, 92vw);
  --nav-h: 84px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--navy-black);
  color:var(--champagne);
  font-family:var(--font-body);
  font-weight:300;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--champagne);
  margin:0;
  font-weight:500;
  letter-spacing:.01em;
}

a{ color:inherit; text-decoration:none; }
img,video{ display:block; max-width:100%; }
button{ font-family:inherit; }

::selection{ background:var(--gold); color:var(--navy-black); }

/* ---------- utility ---------- */
.eyebrow{
  font-family:var(--font-body);
  font-size:.72rem;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--gold);
  display:flex;
  align-items:center;
  gap:.7em;
}
.eyebrow::before{
  content:"";
  width:28px; height:1px;
  background:var(--gold);
  display:inline-block;
}
.container{ width:var(--container); margin-inline:auto; }

.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity 1.1s var(--ease), transform 1.1s var(--ease);
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }
.reveal-delay-1{ transition-delay:.12s; }
.reveal-delay-2{ transition-delay:.24s; }
.reveal-delay-3{ transition-delay:.36s; }

/* ============================================================
   KEY-LIGHT SCROLL INDICATOR (signature element)
   A vertical strip echoing a hotel door-lock LED, filling gold
   as the guest — the visitor — moves through the property.
   ============================================================ */
.keylight{
  position:fixed;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  height:min(38vh,320px);
  width:3px;
  background:rgba(243,234,217,0.12);
  border-radius:3px;
  z-index:60;
  overflow:hidden;
}
.keylight__fill{
  position:absolute;
  left:0; bottom:0; width:100%;
  height:0%;
  background:linear-gradient(180deg,var(--gold-bright),var(--gold));
  box-shadow:0 0 12px 1px rgba(201,162,75,.6);
  transition:height .25s linear;
}
.keylight__label{
  position:absolute;
  right:14px;
  bottom:calc(100% + 10px);
  font-size:.62rem;
  letter-spacing:.24em;
  color:var(--gold-dim);
  text-transform:uppercase;
  writing-mode:vertical-rl;
}
@media (max-width:820px){ .keylight{ display:none; } }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav{
  position:fixed; top:0; left:0; width:100%;
  z-index:100;
  padding:22px 0;
  transition:padding .4s var(--ease), background .4s var(--ease), backdrop-filter .4s var(--ease);
}
.nav.is-scrolled{
  padding:14px 0;
  background:rgba(5,7,12,0.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav__row{
  display:flex; align-items:center; justify-content:space-between;
}
.nav__brand{
  font-family:var(--font-display);
  font-size:1.28rem;
  letter-spacing:.02em;
  color:var(--champagne);
}
.nav__brand em{ color:var(--gold); font-style:normal; }
.nav__links{
  display:flex; gap:2.4rem;
  list-style:none; margin:0; padding:0;
}
.nav__links a{
  font-size:.76rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--champagne-dim);
  position:relative;
  padding-bottom:6px;
  transition:color .3s;
}
.nav__links a::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background:var(--gold); transition:width .35s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active{ color:var(--champagne); }
.nav__links a:hover::after, .nav__links a.is-active::after{ width:100%; }

.nav__toggle{
  display:none;
  width:44px; height:44px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
  border-radius:50%;
  position:relative;
  cursor:pointer;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after{
  content:""; position:absolute; left:13px; width:18px; height:1px; background:var(--champagne);
  transition:transform .3s var(--ease), opacity .3s;
}
.nav__toggle span{ top:21px; }
.nav__toggle span::before{ top:-6px; }
.nav__toggle span::after{ top:6px; }
.nav__toggle.is-open span{ background:transparent; }
.nav__toggle.is-open span::before{ transform:translateY(6px) rotate(45deg); }
.nav__toggle.is-open span::after{ transform:translateY(-6px) rotate(-45deg); }

.nav__mobile{
  position:fixed; inset:0;
  background:rgba(5,8,14,.98);
  z-index:99;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  gap:2.2rem;
  opacity:0; visibility:hidden;
  transition:opacity .4s var(--ease);
}
.nav__mobile.is-open{ opacity:1; visibility:visible; }
.nav__mobile a{
  font-family:var(--font-display);
  font-size:1.9rem;
  color:var(--champagne);
}

@media (max-width:900px){
  .nav__links{ display:none; }
  .nav__toggle{ display:block; }
}

/* ============================================================
   CINEMATIC SECTION / FULL-BLEED VIDEO MECHANICS
   ============================================================ */
.scene{
  position:relative;
  min-height:100svh;
  min-height:100dvh;
  width:100%;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  isolation:isolate;
}
.scene__media{
  position:absolute; inset:0;
  width:100%; height:100%;
  z-index:-2;
}
.scene__media video, .scene__media img{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover;
  object-position:center;
}
.scene__overlay{
  position:absolute; inset:0;
  z-index:-1;
}
.scene__overlay--bottom{ background:linear-gradient(180deg, rgba(5,7,12,0.12) 0%, rgba(5,7,12,0.28) 45%, rgba(5,7,12,0.92) 100%); }
.scene__overlay--full{ background:linear-gradient(180deg, rgba(5,7,12,0.55) 0%, rgba(5,7,12,0.42) 40%, rgba(5,7,12,0.86) 100%); }
.scene__overlay--radial{ background:radial-gradient(120% 90% at 15% 30%, rgba(5,7,12,0.2), rgba(5,7,12,0.82) 75%); }
.scene__content{
  position:relative;
  width:100%;
  padding:0 0 min(9vh,90px);
}
.scene--center{ align-items:center; }
.scene--center .scene__content{ padding:0; }

/* ---------- HERO ---------- */
.hero{ align-items:center; }
.hero .scene__content{ padding:0; }
.hero__inner{
  width:var(--container); margin-inline:auto;
  padding-top:var(--nav-h);
}
.hero__kicker{
  font-size:.78rem; letter-spacing:.34em; text-transform:uppercase;
  color:var(--gold);
  margin-bottom:1.4rem;
}
.hero__name{
  font-size:clamp(2.8rem, 8vw, 6.4rem);
  line-height:1.02;
  color:var(--champagne);
  font-weight:500;
}
.hero__name .accent{ color:var(--gold); font-style:italic; }
.hero__role{
  margin-top:1.1rem;
  font-family:var(--font-body);
  font-weight:300;
  font-size:clamp(1.05rem,2.2vw,1.5rem);
  color:var(--champagne-dim);
  letter-spacing:.02em;
}
.hero__meta{
  margin-top:2.2rem;
  display:flex; flex-wrap:wrap; gap:.9rem 1.6rem;
  font-size:.82rem;
  letter-spacing:.06em;
  color:var(--champagne-dim);
}
.hero__meta span{ display:flex; align-items:center; gap:.55rem; }
.hero__meta span::before{
  content:""; width:5px; height:5px; border-radius:50%;
  background:var(--gold);
}
.hero__scroll{
  position:absolute; left:50%; bottom:38px; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:.6rem;
  font-size:.64rem; letter-spacing:.28em; text-transform:uppercase;
  color:var(--champagne-dim);
}
.hero__scroll .line{
  width:1px; height:46px; background:linear-gradient(180deg,var(--gold),transparent);
  animation:scrollpulse 2.2s ease-in-out infinite;
}
@keyframes scrollpulse{ 0%,100%{ opacity:.3 } 50%{ opacity:1 } }

/* ---------- generic section heading ---------- */
.section-head{ margin-bottom:clamp(2.4rem,6vh,4.6rem); max-width:640px; }
.section-head h2{
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  margin-top:.9rem;
  line-height:1.08;
}
.section-head p{
  margin-top:1.2rem;
  color:var(--champagne-dim);
  font-size:1.02rem;
  line-height:1.7;
  max-width:52ch;
}

/* ---------- ABOUT ---------- */
.about .scene__content{ padding-bottom:0; display:flex; align-items:center; min-height:100%; }
.about__grid{
  width:var(--container); margin-inline:auto;
  display:grid; grid-template-columns:1.1fr .9fr; gap:4rem;
  align-items:center;
  padding-block: clamp(120px, 16vh, 200px) 80px;
}
.about__lead{
  font-family:var(--font-display);
  font-size:clamp(1.3rem,2.3vw,1.7rem);
  line-height:1.5;
  color:var(--champagne);
  font-style:italic;
}
.about__body{ margin-top:1.6rem; color:var(--champagne-dim); line-height:1.8; font-size:.98rem; }
.about__facts{
  display:flex; flex-direction:column; gap:1.6rem;
  border-left:1px solid var(--line);
  padding-left:2.2rem;
}
.about__fact b{ display:block; font-family:var(--font-display); font-size:1.9rem; color:var(--gold); font-weight:500; }
.about__fact span{ font-size:.78rem; letter-spacing:.08em; color:var(--champagne-dim); text-transform:uppercase; }

@media (max-width:900px){
  .about__grid{ grid-template-columns:1fr; gap:2.4rem; padding-block:130px 60px; }
  .about__facts{ border-left:none; border-top:1px solid var(--line); padding-left:0; padding-top:1.6rem; flex-direction:row; flex-wrap:wrap; gap:2rem; }
}

/* ---------- EXPERIENCE (timeline) ---------- */
.experience .scene__content{ padding-block:calc(var(--nav-h) + 60px) 70px; }
.timeline{ margin-top:2.6rem; display:flex; flex-direction:column; }
.timeline__item{
  display:grid; grid-template-columns:120px 1fr;
  gap:2rem;
  padding:2.1rem 0;
  border-top:1px solid var(--line);
}
.timeline__item:last-child{ border-bottom:1px solid var(--line); }
.timeline__years{ font-family:var(--font-display); color:var(--gold); font-size:1.2rem; font-style:italic; }
.timeline__role{ font-size:1.35rem; color:var(--champagne); font-family:var(--font-display); font-weight:500; }
.timeline__org{ margin-top:.3rem; font-size:.82rem; letter-spacing:.1em; text-transform:uppercase; color:var(--champagne-dim); }
.timeline__desc{ margin-top:.9rem; color:var(--champagne-dim); font-size:.94rem; line-height:1.75; max-width:60ch; }
.edu-card{
  margin-top:2.4rem; padding-top:2.2rem; border-top:1px solid var(--line);
  display:grid; grid-template-columns:120px 1fr; gap:2rem;
}
@media (max-width:720px){
  .timeline__item, .edu-card{ grid-template-columns:1fr; gap:.5rem; }
}

/* ---------- SKILLS ---------- */
.skills .scene__content{ padding-block:calc(var(--nav-h)+60px) 70px; }
.skills__cols{ display:grid; grid-template-columns:1fr 1fr; gap:3rem; margin-top:2.6rem; }
.skills__col h4{ font-size:.76rem; letter-spacing:.22em; text-transform:uppercase; color:var(--gold); margin-bottom:1.3rem; font-family:var(--font-body); font-weight:500; }
.chip-list{ display:flex; flex-wrap:wrap; gap:.7rem; }
.chip{
  padding:.6rem 1.1rem;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.82rem;
  color:var(--champagne);
  background:rgba(201,162,75,0.05);
  transition:border-color .3s, background .3s, transform .3s;
}
.chip:hover{ border-color:var(--gold); background:rgba(201,162,75,0.14); transform:translateY(-2px); }
@media (max-width:760px){ .skills__cols{ grid-template-columns:1fr; gap:2.2rem; } }

/* ============================================================
   PROJECTS — editorial full-bleed storytelling
   ============================================================ */
.projects-intro .scene__content{ display:flex; align-items:center; min-height:100%; padding-block:calc(var(--nav-h)+40px) 60px; }
.projects-intro__inner{ width:var(--container); margin-inline:auto; }
.projects-intro h2{ font-size:clamp(2.6rem,7vw,5.2rem); max-width:14ch; }

.project{
  position:relative;
  min-height:100svh; min-height:100dvh;
  display:flex; align-items:center;
  overflow:hidden;
  border-top:1px solid var(--line);
}
.project__media{ position:absolute; inset:0; z-index:-2; }
.project__media video, .project__media img, .project__media .fallback{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
}
.project__media .fallback{
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(201,162,75,.14), transparent 55%),
    linear-gradient(155deg, var(--navy) 0%, var(--navy-black) 78%);
}
.project__overlay{ position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg, rgba(5,7,12,.92) 0%, rgba(5,7,12,.72) 32%, rgba(5,7,12,.32) 62%, rgba(5,7,12,.12) 100%); }
.project--media-right .project__overlay{ background:linear-gradient(270deg, rgba(5,7,12,.92) 0%, rgba(5,7,12,.72) 32%, rgba(5,7,12,.32) 62%, rgba(5,7,12,.12) 100%); }

.project__inner{ width:var(--container); margin-inline:auto; }
.project__grid{ display:grid; grid-template-columns:1fr 1fr; }
.project__text{ max-width:560px; padding-block:80px; }
.project--media-right .project__text{ grid-column:1; }
.project--media-left .project__text{ grid-column:2; }

.project__index{ font-family:var(--font-display); font-size:1rem; color:var(--gold-dim); }
.project__category{ margin-top:1.4rem; }
.project__name{ margin-top:.9rem; font-size:clamp(2rem,3.6vw,3.1rem); line-height:1.06; }
.project__desc{ margin-top:1.3rem; color:var(--champagne-dim); line-height:1.75; font-size:.98rem; }
.project__problem{ margin-top:1.4rem; font-size:.9rem; color:var(--champagne); }
.project__problem b{ color:var(--gold); font-weight:500; display:block; font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; margin-bottom:.5rem; }
.project__tags{ margin-top:1.5rem; display:flex; flex-wrap:wrap; gap:.55rem; }
.project__tags span{ font-size:.72rem; letter-spacing:.05em; padding:.4rem .85rem; border:1px solid var(--line); border-radius:4px; color:var(--champagne-dim); }
.project__link{
  margin-top:2rem; display:inline-flex; align-items:center; gap:.6rem;
  font-size:.78rem; letter-spacing:.18em; text-transform:uppercase; color:var(--gold);
  border-bottom:1px solid var(--gold-dim); padding-bottom:6px;
}
.project__link svg{ width:14px; height:14px; transition:transform .3s var(--ease); }
.project__link:hover svg{ transform:translateX(4px); }

@media (max-width:900px){
  .project__grid{ grid-template-columns:1fr; }
  .project--media-right .project__text, .project--media-left .project__text{ grid-column:1; }
  .project__text{ padding-block:120px 70px; }
}

/* ============================================================
   AI LAB
   ============================================================ */
.ailab .scene__content{ display:flex; align-items:center; min-height:100%; padding-block:calc(var(--nav-h)+40px) 70px; }
.ailab__grid{ width:var(--container); margin-inline:auto; display:grid; grid-template-columns:1fr; gap:2.4rem; max-width:760px; }
.ailab__list{ margin-top:2.2rem; display:flex; flex-direction:column; gap:1.6rem; }
.ailab__item{ display:grid; grid-template-columns:44px 1fr; gap:1.2rem; border-top:1px solid var(--line); padding-top:1.5rem; }
.ailab__item:first-child{ border-top:none; padding-top:0; }
.ailab__item i{ width:8px; height:8px; margin-top:.5rem; border-radius:50%; background:var(--gold); box-shadow:0 0 14px 2px rgba(201,162,75,.55); display:block; }
.ailab__item h4{ font-family:var(--font-body); font-weight:500; font-size:1.02rem; color:var(--champagne); }
.ailab__item p{ margin-top:.4rem; color:var(--champagne-dim); font-size:.92rem; line-height:1.7; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact{ align-items:center; }
.contact .scene__content{ display:flex; align-items:center; min-height:100%; padding:0; }
.contact__inner{ width:var(--container); margin-inline:auto; text-align:center; }
.contact .section-head{ margin-inline:auto; max-width:640px; }
.contact .section-head p{ margin-inline:auto; }
.contact__eyebrow{ justify-content:center; }
.contact__eyebrow::before{ display:none; }
.contact h2{ font-size:clamp(2.4rem,6vw,4.6rem); }
.contact__links{ margin-top:2.6rem; display:flex; flex-wrap:wrap; justify-content:center; gap:1.1rem; }
.contact__link{
  padding:1rem 1.8rem; border:1px solid var(--line); border-radius:4px;
  font-size:.86rem; letter-spacing:.06em; color:var(--champagne);
  transition:border-color .3s, background .3s, transform .3s;
}
.contact__link:hover{ border-color:var(--gold); background:rgba(201,162,75,.08); transform:translateY(-3px); }
.contact__link b{ color:var(--gold); font-weight:500; }
.footer{
  position:relative; z-index:1;
  padding:2.4rem 0 max(2.4rem, env(safe-area-inset-bottom));
  text-align:center; font-size:.74rem; letter-spacing:.08em; color:var(--champagne-dim);
}
.footer b{ color:var(--gold); font-weight:500; }

@media (max-width:600px){
  .contact__links{ flex-direction:column; align-items:stretch; }
}

/* Safe-area padding for full-bleed sections on notch devices */
.scene__content{ padding-inline:0; }
.container, .hero__inner, .about__grid, .experience .scene__content .container,
.projects-intro__inner, .project__inner, .ailab__grid, .contact__inner{
  padding-left:max(0px, env(safe-area-inset-left));
  padding-right:max(0px, env(safe-area-inset-right));
}

/* Wrap generic sections' inner content width */
.experience .container, .skills .container{ width:var(--container); margin-inline:auto; }

/* Loading / poster fallback state */
video{ background:var(--navy-black); }

/* ============================================================
   SECTION-SPECIFIC FOCAL POINTS
   Keeps the important subject of each clip in frame on both
   the tall mobile crop and the wide desktop crop.
   ============================================================ */
.hero .scene__media video{ object-position:center 38%; }
.about .scene__media video{ object-position:center 62%; }
.experience .scene__media video{ object-position:center 55%; }
.skills .scene__media video{ object-position:center 48%; }
.projects-intro .scene__media video{ object-position:center 45%; }
.ailab .scene__media video{ object-position:center; }
.contact .scene__media video{ object-position:center 58%; }

/* Reused project clips inherit the same focal point as their source section */
.project--hotelmind .project__media video{ object-position:center 48%; }   /* skills clip */
.project--frontoffice .project__media video{ object-position:center 55%; } /* experience clip */
.project--guestreturn .project__media video{ object-position:center 62%; } /* about clip */
.project--nexretail .project__media video{ object-position:center 58%; }   /* contact clip */