/*
Theme Name: Alfian Ardiansyah Portfolio
Theme URI: https://alfianard25@gmail.com
Author: Alfian Ardiansyah, S.Pd.
Author URI: https://alfianard25@gmail.com
Description: Personal portfolio theme untuk Alfian Ardiansyah — 3D Designer, Drone Specialist & Mekatronika Engineer.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: alfian-portfolio
Tags: portfolio, personal, dark, modern, responsive, one-page
*/

/* ─── CSS VARIABLES ─────────────────────────────────── */
:root {
  --bg:        #0c0c0e;
  --bg2:       #111114;
  --card:      #17171b;
  --accent:    #4f8ef7;
  --accent2:   #7eb3ff;
  --gold:      #c8a96e;
  --text:      #eeeef0;
  --muted:     #7c7c8a;
  --border:    #252530;
  --ff-head:   'Sora', sans-serif;
  --ff-body:   'Inter', sans-serif;
  --ff-mono:   'JetBrains Mono', monospace;
  --ease:      cubic-bezier(.4,0,.2,1);
  --r:         6px;
  --shadow:    0 8px 32px rgba(0,0,0,.45);
}

/* ─── RESET ─────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg);color:var(--text);font-family:var(--ff-body);line-height:1.7;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:color .25s}
a:hover{color:var(--accent2)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* ─── TYPOGRAPHY ────────────────────────────────────── */
h1,h2,h3,h4{font-family:var(--ff-head);font-weight:700;line-height:1.15;color:var(--text)}
h1{font-size:clamp(2.6rem,7vw,5.5rem);letter-spacing:-.04em}
h2{font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.03em}
h3{font-size:clamp(1.1rem,2.5vw,1.5rem)}
p{color:var(--muted);margin-bottom:1rem}

.label{
  font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);display:block;margin-bottom:.9rem
}

/* ─── LAYOUT ────────────────────────────────────────── */
.container{max-width:1160px;margin:0 auto;padding:0 2rem}
section{padding:7rem 0}

/* ─── BUTTONS ───────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.78rem 1.8rem;font-family:var(--ff-body);
  font-size:.875rem;font-weight:600;border-radius:var(--r);
  cursor:pointer;transition:all .3s var(--ease);border:none
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent2);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(79,142,247,.3)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ─── HEADER / NAV ──────────────────────────────────── */
#site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:1.4rem 0;transition:all .35s var(--ease)
}
#site-header.scrolled{
  background:rgba(12,12,14,.92);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);padding:1rem 0
}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.site-logo{
  font-family:var(--ff-head);font-weight:800;font-size:1.3rem;
  color:var(--text);letter-spacing:-.04em
}
.site-logo span{color:var(--accent)}
.nav-menu{display:flex;align-items:center;gap:2.2rem}
.nav-menu a{
  font-size:.85rem;color:var(--muted);font-weight:500;
  letter-spacing:.02em;position:relative;transition:color .25s
}
.nav-menu a::after{
  content:'';position:absolute;bottom:-3px;left:0;
  width:0;height:1.5px;background:var(--accent);transition:width .3s
}
.nav-menu a:hover,.nav-menu a.active{color:var(--text)}
.nav-menu a:hover::after,.nav-menu a.active::after{width:100%}
.nav-cta{
  background:var(--accent)!important;color:#fff!important;
  padding:.45rem 1.1rem;border-radius:var(--r);font-size:.8rem!important
}
.nav-cta::after{display:none!important}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.menu-toggle span{display:block;width:22px;height:1.5px;background:var(--text);transition:all .3s}

/* ─── HERO ──────────────────────────────────────────── */
#hero{
  min-height:100vh;display:flex;align-items:center;
  position:relative;overflow:hidden;padding:0
}
.hero-mesh{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse 65% 55% at 75% 40%, rgba(79,142,247,.07) 0%, transparent 65%),
    radial-gradient(ellipse 40% 50% at 10% 80%, rgba(200,169,110,.05) 0%, transparent 60%)
}
.hero-dots{
  position:absolute;inset:0;
  background-image:radial-gradient(circle, rgba(79,142,247,.12) 1px, transparent 1px);
  background-size:36px 36px;mask-image:radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent)
}
.hero-inner{
  display:grid;grid-template-columns:1fr auto;
  align-items:center;gap:5rem;width:100%;position:relative;z-index:1
}
.hero-eyebrow{display:flex;align-items:center;gap:.8rem;margin-bottom:1.8rem;
  opacity:0;animation:fadeUp .8s var(--ease) .1s forwards}
.hero-line{width:36px;height:1.5px;background:var(--accent)}
.hero-title{opacity:0;animation:fadeUp .8s var(--ease) .25s forwards;margin-bottom:1.4rem}
.hero-title .hi{display:block;font-size:clamp(1rem,2vw,1.3rem);color:var(--muted);font-weight:400;letter-spacing:.05em;margin-bottom:.4rem}
.hero-title .name{display:block;color:var(--text)}
.hero-title .name em{color:var(--accent);font-style:normal}
.hero-desc{
  font-size:1.05rem;max-width:480px;
  opacity:0;animation:fadeUp .8s var(--ease) .4s forwards;margin-bottom:2.5rem
}
.hero-actions{
  display:flex;gap:.9rem;flex-wrap:wrap;
  opacity:0;animation:fadeUp .8s var(--ease) .55s forwards
}
.hero-contact-row{
  display:flex;gap:1.5rem;flex-wrap:wrap;margin-top:2rem;
  opacity:0;animation:fadeUp .8s var(--ease) .7s forwards
}
.hero-contact-row a{
  font-size:.8rem;color:var(--muted);font-family:var(--ff-mono);
  display:flex;align-items:center;gap:.4rem;transition:color .25s
}
.hero-contact-row a:hover{color:var(--accent)}

/* Hero Photo */
.hero-photo-wrap{
  position:relative;flex-shrink:0;
  opacity:0;animation:fadeIn .9s var(--ease) .5s forwards
}
.hero-photo{
  width:260px;height:320px;object-fit:cover;object-position:top center;
  border-radius:120px 120px 120px 30px;
  border:2px solid var(--border);
  filter:grayscale(10%) contrast(1.05);
  box-shadow:var(--shadow), 0 0 0 1px rgba(79,142,247,.15)
}
.hero-photo-badge{
  position:absolute;bottom:-12px;right:-12px;
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r);padding:.6rem 1rem;
  font-family:var(--ff-mono);font-size:.68rem;
  color:var(--accent);letter-spacing:.08em;
  box-shadow:var(--shadow)
}
.hero-photo-ring{
  position:absolute;inset:-14px;border-radius:130px 130px 130px 38px;
  border:1px dashed rgba(79,142,247,.2);pointer-events:none
}

/* ─── ABOUT ─────────────────────────────────────────── */
#about{background:var(--bg2)}
.about-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:5rem;align-items:center}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem;margin-top:2.5rem}
.stat-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r);padding:1.2rem 1.4rem
}
.stat-num{
  font-family:var(--ff-head);font-size:2.4rem;font-weight:800;
  color:var(--accent);line-height:1;margin-bottom:.2rem
}
.stat-lbl{font-size:.78rem;color:var(--muted)}

/* ─── SKILLS ────────────────────────────────────────── */
#skills{background:var(--bg)}
.skills-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;margin-top:4rem}
.skill-card{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r);padding:1.8rem 1.4rem;
  transition:transform .3s var(--ease),border-color .3s;
  position:relative;overflow:hidden
}
.skill-card::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .35s var(--ease)
}
.skill-card:hover{transform:translateY(-5px);border-color:rgba(79,142,247,.3)}
.skill-card:hover::after{transform:scaleX(1)}
.skill-icon{font-size:1.9rem;margin-bottom:.9rem}
.skill-card h3{font-size:1.05rem;margin-bottom:.6rem}
.skill-tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.9rem}
.tag{
  font-family:var(--ff-mono);font-size:.62rem;padding:.18rem .55rem;
  background:rgba(79,142,247,.08);border:1px solid rgba(79,142,247,.2);
  border-radius:3px;color:var(--accent);letter-spacing:.04em
}

/* ─── PORTFOLIO ─────────────────────────────────────── */
#portfolio{background:var(--bg2)}
.portfolio-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:3.5rem}
.filter-row{display:flex;gap:.5rem}
.filter-btn{
  font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.1em;
  text-transform:uppercase;padding:.38rem .85rem;
  background:transparent;border:1px solid var(--border);
  color:var(--muted);border-radius:var(--r);cursor:pointer;transition:all .25s
}
.filter-btn:hover,.filter-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}
.portfolio-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:1.3rem}
.p-item{
  position:relative;overflow:hidden;border-radius:var(--r);
  border:1px solid var(--border);background:var(--card);cursor:pointer
}
.p-item:nth-child(1){grid-column:span 7}
.p-item:nth-child(2){grid-column:span 5}
.p-item:nth-child(3){grid-column:span 5}
.p-item:nth-child(4){grid-column:span 7}
.p-item:nth-child(5){grid-column:span 12}
.p-thumb{
  aspect-ratio:16/9;background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--ff-mono);font-size:.75rem;color:var(--muted);
  transition:transform .45s var(--ease);overflow:hidden;
  position:relative
}
.p-thumb img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;transition:transform .45s var(--ease)
}
.p-item:hover .p-thumb img{transform:scale(1.05)}
.p-item:hover .p-thumb{transform:scale(1.04)}
.p-overlay{
  position:absolute;inset:0;background:rgba(12,12,14,.9);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:1.4rem;opacity:0;transition:opacity .3s
}
.p-item:hover .p-overlay{opacity:1}
.p-overlay h3{font-size:1.1rem;margin-bottom:.3rem}
.p-overlay p{font-size:.8rem;margin-bottom:.8rem}
.p-link{
  font-size:.75rem;color:var(--accent);
  font-family:var(--ff-mono);display:inline-flex;align-items:center;gap:.3rem
}

/* ─── EXPERIENCE ────────────────────────────────────── */
#experience{background:var(--bg)}
.timeline{position:relative;margin-top:4rem;padding-left:1.5rem}
.timeline::before{
  content:'';position:absolute;left:0;top:0;bottom:0;
  width:1px;background:var(--border)
}
.tl-item{position:relative;padding-left:2rem;padding-bottom:3rem}
.tl-item::before{
  content:'';position:absolute;left:-4.5px;top:8px;
  width:10px;height:10px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 3px rgba(79,142,247,.15)
}
.tl-date{
  font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;margin-bottom:.4rem
}
.tl-title{font-size:1.15rem;margin-bottom:.2rem}
.tl-company{font-size:.85rem;color:var(--muted);margin-bottom:.7rem}
.tl-desc{font-size:.88rem;max-width:640px}

/* ─── CONTACT ───────────────────────────────────────── */
#contact{background:var(--bg2)}
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:5rem;align-items:start}
.contact-links{display:flex;flex-direction:column;gap:.9rem;margin-top:2rem}
.c-link{
  display:flex;align-items:center;gap:1rem;
  padding:.9rem 1.1rem;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r);
  transition:all .25s;color:var(--text)
}
.c-link:hover{border-color:rgba(79,142,247,.35);transform:translateX(5px);color:var(--accent)}
.c-icon{font-size:1.1rem;width:1.8rem;text-align:center}
.c-text{font-size:.88rem}
.contact-form{display:flex;flex-direction:column;gap:1.1rem}
.form-group{display:flex;flex-direction:column;gap:.35rem}
.form-group label{
  font-family:var(--ff-mono);font-size:.68rem;
  letter-spacing:.12em;text-transform:uppercase;color:var(--muted)
}
.form-group input,.form-group textarea{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r);padding:.8rem 1rem;
  color:var(--text);font-family:var(--ff-body);font-size:.9rem;
  outline:none;width:100%;transition:border-color .25s
}
.form-group input:focus,.form-group textarea:focus{border-color:rgba(79,142,247,.5)}
.form-group textarea{resize:vertical;min-height:130px}

/* ─── FOOTER ────────────────────────────────────────── */
#colophon{
  background:var(--bg);border-top:1px solid var(--border);padding:2.5rem 0
}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
.footer-copy{font-size:.78rem;color:var(--muted);margin:0}
.footer-links{display:flex;gap:1.2rem}
.footer-links a{font-size:.78rem;color:var(--muted);font-family:var(--ff-mono)}
.footer-links a:hover{color:var(--accent)}

/* ─── ANIMATIONS ────────────────────────────────────── */
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ─── RESPONSIVE ────────────────────────────────────── */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:3rem}
  .hero-photo-wrap{display:none}
  .about-grid{grid-template-columns:1fr;gap:3rem}
  .skills-grid{grid-template-columns:repeat(2,1fr)}
  .portfolio-grid{grid-template-columns:1fr 1fr}
  .p-item:nth-child(n){grid-column:span 1}
}
@media(max-width:768px){
  section{padding:5rem 0}
  .container{padding:0 1.2rem}
  .nav-menu{
    display:none;position:fixed;inset:0;background:var(--bg);
    flex-direction:column;justify-content:center;align-items:center;gap:2rem;z-index:99
  }
  .nav-menu.open{display:flex}
  .nav-menu a{font-size:1.4rem}
  .menu-toggle{display:flex;z-index:100}
  .skills-grid{grid-template-columns:1fr}
  .portfolio-head{flex-direction:column;align-items:flex-start;gap:1.5rem}
  .portfolio-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:3rem}
  .footer-inner{flex-direction:column;gap:1.2rem;text-align:center}
  .about-stats{grid-template-columns:1fr 1fr}
}