/* =========================================================
   Isah Muhammad S — Portfolio
   Design tokens
========================================================= */

:root{
  --font-display:'Space Grotesk', sans-serif;
  --font-body:'Inter', sans-serif;

  /* dark theme (default) */
  --bg:#0B0E14;
  --surface:#12151F;
  --surface-2:#171B27;
  --border:#242A38;
  --ink:#ECEDEF;
  --muted:#9AA0AC;

  --accent:#C9A227;        /* brass / gold — crown motif */
  --accent-ink:#0B0E14;
  --accent-soft:rgba(201,162,39,0.14);
  --accent-2:#3E55C4;      /* indigo — adire-dye reference */
  --accent-2-soft:rgba(62,85,196,0.16);

  --shadow: 0 20px 50px -20px rgba(0,0,0,0.55);
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:28px;

  --maxw:1180px;
  --ease:cubic-bezier(.22,.8,.28,1);
}

html[data-theme="light"]{
  --bg:#F3F0E7;
  --surface:#FFFFFF;
  --surface-2:#ECE7D9;
  --border:#DFD9C8;
  --ink:#14161C;
  --muted:#5B5F6B;

  --accent:#A9820F;
  --accent-ink:#FFFFFF;
  --accent-soft:rgba(169,130,15,0.12);
  --accent-2:#2E3FA0;
  --accent-2-soft:rgba(46,63,160,0.10);

  --shadow: 0 20px 44px -22px rgba(20,22,28,0.22);
}

/* =========================================================
   Reset
========================================================= */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  transition:background .35s var(--ease), color .35s var(--ease);
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font:inherit; }
h1,h2,h3,h4{ font-family:var(--font-display); margin:0; letter-spacing:-0.01em; }
p{ margin:0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; scroll-behavior:auto !important; }
}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:4px;
}

.container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 28px;
}

.section{ padding:120px 0; }
@media (max-width:720px){ .section{ padding:80px 0; } }

.eyebrow{
  display:inline-block;
  font-family:var(--font-body);
  font-size:0.85rem;
  color:var(--accent);
  font-weight:600;
  margin:0 0 14px;
}

.section__head{ max-width:640px; margin-bottom:52px; }
.section__title{ font-size:clamp(1.7rem, 3.2vw, 2.5rem); font-weight:600; line-height:1.15; }
.section__lead{ color:var(--muted); margin-top:14px; font-size:1.02rem; max-width:520px; }

/* =========================================================
   Reveal-on-scroll (single orchestrated pass)
========================================================= */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }

/* =========================================================
   Buttons
========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:0.95rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{
  background:var(--accent);
  color:var(--accent-ink);
  box-shadow:0 12px 24px -12px var(--accent-soft);
}
.btn--primary:hover{ box-shadow:0 16px 30px -12px var(--accent-soft); }
.btn--ghost{
  background:transparent;
  border-color:var(--border);
  color:var(--ink);
}
.btn--ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn--small{ padding:9px 18px; font-size:0.85rem; }
.btn--whatsapp{
  background:var(--accent-2);
  color:#fff;
  margin-top:26px;
  box-shadow:0 12px 24px -12px var(--accent-2-soft);
}

/* =========================================================
   Navbar
========================================================= */
.nav-wrap{
  position:fixed;
  top:18px; left:0; right:0;
  z-index:100;
  display:flex;
  justify-content:center;
  padding:0 18px;
}
.nav{
  width:100%;
  max-width:var(--maxw);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:10px 14px 10px 20px;
  border-radius:999px;
  background:color-mix(in srgb, var(--surface) 72%, transparent);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.nav__logo{ display:flex; align-items:center; gap:9px; }
.nav__logo-mark{ color:var(--accent); width:26px; height:26px; display:flex; }
.nav__logo-mark svg{ width:100%; height:100%; }
.nav__logo-text{ font-family:var(--font-display); font-weight:600; font-size:1.05rem; }

.nav__links{ display:flex; gap:30px; }
.nav__link{
  font-size:0.92rem;
  color:var(--muted);
  position:relative;
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute; left:0; right:0; bottom:0;
  height:2px; background:var(--accent);
  transform:scaleX(0); transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav__link:hover{ color:var(--ink); }
.nav__link:hover::after{ transform:scaleX(1); }

.nav__actions{ display:flex; align-items:center; gap:12px; }

.theme-toggle{
  width:38px; height:38px;
  display:flex; align-items:center; justify-content:center;
  border-radius:50%;
  border:1px solid var(--border);
  background:transparent;
  color:var(--ink);
  cursor:pointer;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.theme-toggle:hover{ border-color:var(--accent); transform:rotate(12deg); }
.theme-toggle svg{ width:18px; height:18px; }
.icon-moon{ display:none; }
html[data-theme="light"] .icon-sun{ display:none; }
html[data-theme="light"] .icon-moon{ display:block; }

.hamburger{
  display:none;
  flex-direction:column;
  gap:5px;
  width:38px; height:38px;
  align-items:center; justify-content:center;
  background:transparent; border:1px solid var(--border);
  border-radius:50%;
  cursor:pointer;
}
.hamburger span{
  width:16px; height:1.6px; background:var(--ink);
  transition:transform .25s var(--ease), opacity .25s var(--ease);
}
.hamburger[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.6px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.hamburger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.6px) rotate(-45deg); }

/* =========================================================
   Hero
========================================================= */
.hero{
  padding:190px 0 100px;
  position:relative;
}
.hero__grid{
  display:grid;
  grid-template-columns:1.05fr 0.85fr;
  gap:40px;
  align-items:center;
}
.hero__name{
  font-size:clamp(2.4rem, 5.6vw, 4.1rem);
  font-weight:700;
  line-height:1.03;
  margin:6px 0 10px;
}
.hero__title{
  font-size:clamp(1.1rem, 2vw, 1.35rem);
  color:var(--accent);
  font-weight:600;
  margin-bottom:22px;
}
.hero__tagline{
  margin:0 0 22px;
  padding-left:18px;
  border-left:3px solid var(--accent);
  font-family:var(--font-display);
  font-size:1.2rem;
  font-style:normal;
  color:var(--ink);
}
.hero__value{
  color:var(--muted);
  max-width:540px;
  font-size:1.02rem;
  margin-bottom:34px;
}
.hero__actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:46px; }
.hero__meta{ display:flex; gap:40px; flex-wrap:wrap; }
.hero__meta-item{ display:flex; flex-direction:column; gap:4px; }
.hero__meta-label{ font-size:0.78rem; color:var(--muted); }
.hero__meta-value{ font-weight:600; font-size:0.95rem; }

.hero__emblem{
  display:flex;
  justify-content:center;
  align-items:center;
  position:relative;
}

.hero__photo{
  width:min(100%, 430px);
  aspect-ratio:1 / 1;
  object-fit:cover;
  object-position: center top;
  border-radius:50%;
  border:4px solid var(--accent);
  box-shadow:0 0 0 12px rgba(201,162,39,0.12), 0 24px 60px -30px rgba(0,0,0,0.7);
  background:linear-gradient(160deg, var(--surface-2), var(--surface));
  display:block;
}

.emblem-svg{ width:100%; max-width:420px; }

.e-ring{ fill:none; stroke:var(--border); stroke-width:1; }
.e-ring--mid{ stroke-dasharray:2 8; animation:spin 60s linear infinite; transform-origin:210px 210px; }
.e-ring--outer{ animation:spin 90s linear infinite reverse; transform-origin:210px 210px; stroke-dasharray:1 6; }
.e-crown-path{ fill:var(--accent-soft); stroke:var(--accent); stroke-width:2.2; stroke-linejoin:round; }
.e-node{ fill:var(--accent-2); }
.e-node--gold{ fill:var(--accent); animation:pulse 2.6s ease-in-out infinite; }
.e-base{ stroke:var(--accent); stroke-width:2.2; }
.e-line{ stroke:var(--border); stroke-width:1.4; fill:none; }
.e-dot{ fill:var(--accent-2); }

@keyframes spin{ to{ transform:rotate(360deg); } }
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.35; } }

@media (prefers-reduced-motion: reduce){
  .e-ring--mid,.e-ring--outer,.e-node--gold{ animation:none; }
}

/* =========================================================
   About
========================================================= */
.about__grid{
  display:grid;
  grid-template-columns:0.55fr 1fr;
  gap:60px;
  align-items:center;
}
.about__frame{ position:relative; padding:18px; }
.about__frame-inner{
  aspect-ratio:1/1.05;
  border-radius:var(--radius-m);
  background:linear-gradient(155deg, var(--surface-2), var(--surface));
  border:1px solid var(--border);
  overflow:hidden;
  display:flex; align-items:center; justify-content:center;
}
.about__photo{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.about__corner{
  position:absolute;
  width:26px; height:26px;
  border:2px solid var(--accent);
}
.about__corner--tl{ top:0; left:0; border-right:none; border-bottom:none; }
.about__corner--tr{ top:0; right:0; border-left:none; border-bottom:none; }
.about__corner--bl{ bottom:0; left:0; border-right:none; border-top:none; }
.about__corner--br{ bottom:0; right:0; border-left:none; border-top:none; }

.about__text{ color:var(--muted); margin-bottom:18px; max-width:60ch; }
.about__text em{ color:var(--ink); font-style:normal; font-weight:600; }

.skills{
  display:flex; flex-wrap:wrap; gap:10px;
  margin-top:26px;
}
.skills li{
  padding:8px 16px;
  border:1px solid var(--border);
  border-radius:999px;
  font-size:0.85rem;
  color:var(--ink);
  background:var(--surface);
}

/* =========================================================
   Services
========================================================= */
.services__grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--border);
  border:1px solid var(--border);
  border-radius:var(--radius-m);
  overflow:hidden;
}
.s-card{
  background:var(--surface);
  padding:32px 28px;
  position:relative;
  transition:background .25s var(--ease);
}
.s-card::before{
  content:"";
  position:absolute; left:0; top:0; bottom:0;
  width:3px; background:var(--accent);
  transform:scaleY(0); transform-origin:top;
  transition:transform .3s var(--ease);
}
.s-card:hover{ background:var(--surface-2); }
.s-card:hover::before{ transform:scaleY(1); }
.s-card__icon{
  display:inline-flex;
  width:42px; height:42px;
  align-items:center; justify-content:center;
  border-radius:12px;
  background:var(--accent-soft);
  color:var(--accent);
  margin-bottom:18px;
}
.s-card__icon svg{ width:22px; height:22px; }
.s-card__title{ font-size:1.05rem; font-weight:600; margin-bottom:8px; }
.s-card__desc{ color:var(--muted); font-size:0.92rem; }

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

/* =========================================================
   Portfolio
========================================================= */
.p-featured{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:0;
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  overflow:hidden;
  margin-bottom:28px;
  background:var(--surface);
}
.p-featured__visual{
  background:
    radial-gradient(circle at 30% 20%, var(--accent-soft), transparent 60%),
    linear-gradient(160deg, var(--surface-2), var(--bg));
  display:flex; align-items:center; justify-content:center;
  padding:50px;
  min-height:260px;
  color:var(--accent);
}
.p-featured__mark{ width:60%; max-width:180px; }
.p-featured__body{ padding:48px; display:flex; flex-direction:column; gap:6px; justify-content:center; }
.p-featured__tag{
  display:inline-block;
  color:var(--accent-2);
  font-weight:600;
  font-size:0.82rem;
  margin-bottom:6px;
}
.p-featured__title{ font-size:1.9rem; font-weight:700; }
.p-featured__cat{ color:var(--accent); font-weight:600; font-size:0.95rem; margin:6px 0 14px; }
.p-featured__desc{ color:var(--muted); max-width:52ch; }

.p-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:20px;
}
.p-card{
  border:1px solid var(--border);
  border-radius:var(--radius-m);
  padding:28px;
  background:var(--surface);
  transition:transform .3s var(--ease), border-color .3s var(--ease);
}
.p-card:hover{ transform:translateY(-6px); border-color:var(--accent); }
.p-card__cat{
  font-size:0.78rem;
  color:var(--accent-2);
  font-weight:600;
}
.p-card__title{ font-size:1.15rem; font-weight:600; margin:10px 0 8px; }
.p-card__desc{ color:var(--muted); font-size:0.92rem; }

@media (max-width:920px){
  .p-featured{ grid-template-columns:1fr; }
  .p-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:600px){ .p-grid{ grid-template-columns:1fr; } .p-featured__body{ padding:32px; } }

/* =========================================================
   Why work with me
========================================================= */
.why__grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:36px 30px;
}
.why__item h3{ font-size:1.05rem; font-weight:600; margin:16px 0 8px; }
.why__item p{ color:var(--muted); font-size:0.92rem; }
.why__icon{
  display:inline-flex;
  width:44px; height:44px;
  align-items:center; justify-content:center;
  border-radius:50%;
  background:var(--accent-2-soft);
  color:var(--accent-2);
}
.why__icon svg{ width:22px; height:22px; }

@media (max-width:900px){ .why__grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .why__grid{ grid-template-columns:1fr; } }

/* =========================================================
   Process
========================================================= */
.process__steps{
  display:grid;
  grid-template-columns:repeat(6, 1fr);
  gap:0;
  position:relative;
}
.process__steps::before{
  content:"";
  position:absolute;
  top:14px; left:4%; right:4%;
  height:1px;
  background:var(--border);
}
.process__step{
  position:relative;
  padding:0 16px 0 0;
}
.process__num{
  display:block;
  font-family:var(--font-display);
  font-weight:700;
  color:var(--accent);
  font-size:0.95rem;
  margin-bottom:20px;
  position:relative;
}
.process__num::before{
  content:"";
  display:block;
  width:9px; height:9px;
  border-radius:50%;
  background:var(--accent);
  margin-bottom:10px;
}
.process__step h3{ font-size:1rem; font-weight:600; margin-bottom:6px; }
.process__step p{ color:var(--muted); font-size:0.86rem; }

@media (max-width:900px){
  .process__steps{ grid-template-columns:repeat(2, 1fr); gap:34px 20px; }
  .process__steps::before{ display:none; }
}
@media (max-width:560px){ .process__steps{ grid-template-columns:1fr; } }

/* =========================================================
   Contact
========================================================= */
.contact__grid{
  display:grid;
  grid-template-columns:0.8fr 1.2fr;
  gap:60px;
  align-items:start;
}
.contact__card{
  display:flex; flex-direction:column; gap:4px;
  padding:16px 0;
  border-bottom:1px solid var(--border);
}
.contact__card:first-of-type{ border-top:1px solid var(--border); margin-top:30px; }
.contact__card-label{ font-size:0.78rem; color:var(--muted); }
.contact__card-value{ font-weight:600; }

.contact__form{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  padding:36px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.form__row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form__field{ display:flex; flex-direction:column; gap:8px; font-size:0.85rem; color:var(--muted); }
.form__field--full{ grid-column:1 / -1; }
.form__field input, .form__field select, .form__field textarea{
  font:inherit;
  padding:12px 14px;
  border-radius:var(--radius-s);
  border:1px solid var(--border);
  background:var(--bg);
  color:var(--ink);
  transition:border-color .2s var(--ease);
  resize:vertical;
}
.form__field input:focus, .form__field select:focus, .form__field textarea:focus{
  outline:none;
  border-color:var(--accent);
}
.form__submit{ align-self:flex-start; margin-top:4px; }
.form__note{ font-size:0.85rem; color:var(--accent-2); min-height:1.2em; }

@media (max-width:900px){
  .contact__grid{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  .form__row{ grid-template-columns:1fr; }
  .contact__form{ padding:24px; }
}

/* =========================================================
   Footer
========================================================= */
.footer{
  border-top:1px solid var(--border);
  padding:64px 0 0;
  background:var(--surface);
}
.footer__grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer__brand p{ color:var(--muted); font-size:0.88rem; margin-top:10px; }
.footer__loc{ margin-top:4px !important; }
.footer__col h4{ font-size:0.85rem; font-weight:600; margin-bottom:16px; color:var(--muted); }
.footer__col ul{ display:flex; flex-direction:column; gap:10px; }
.footer__col a{ font-size:0.92rem; transition:color .2s var(--ease); }
.footer__col a:hover{ color:var(--accent); }
.footer__bottom{
  border-top:1px solid var(--border);
  padding:22px 28px;
  text-align:center;
  font-size:0.8rem;
  color:var(--muted);
}

@media (max-width:780px){
  .footer__grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:480px){
  .footer__grid{ grid-template-columns:1fr; }
}

/* =========================================================
   Mobile nav
========================================================= */
@media (max-width:860px){
  .nav__links{
    position:fixed;
    top:82px; left:18px; right:18px;
    flex-direction:column;
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--radius-m);
    padding:14px;
    gap:2px;
    box-shadow:var(--shadow);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:transform .25s var(--ease), opacity .25s var(--ease);
  }
  .nav__links.is-open{
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .nav__link{ padding:12px 10px; display:block; }
  .hamburger{ display:flex; }
  .nav__actions .btn--small{ display:none; }
}

@media (max-width:760px){
  .hero__grid{ grid-template-columns:1fr; }
  .hero__emblem{ order:-1; max-width:280px; margin:0 auto 20px; }
  .hero{ padding-top:150px; }
  .about__grid{ grid-template-columns:1fr; }
  .about__frame{ max-width:280px; margin:0 auto; }
}