/* ================================================================
   Ridho Rezky Anwar — Portfolio
   Palette: near-black + terminal green + amber, mono type accents
   ================================================================ */

:root {
  /* Light "paper terminal" (default) */
  --bg: #f5f4ee;
  --bg-alt: #ecebe3;
  --surface: #ffffff;
  --surface-2: #f0efe6;
  --text: #0d0f0c;
  --text-soft: #3d4238;
  --muted: #6b7261;
  --border: rgba(13, 15, 12, 0.14);
  --border-strong: rgba(13, 15, 12, 0.35);

  --accent: #14a05c;     /* terminal green */
  --accent-2: #0d7a45;
  --amber: #d97706;      /* CRT amber */
  --danger: #c1272d;

  --shadow-sm: 2px 2px 0 rgba(13, 15, 12, 0.9);
  --shadow-md: 4px 4px 0 rgba(13, 15, 12, 0.9);
  --shadow-lg: 8px 8px 0 rgba(13, 15, 12, 0.9);

  --radius: 4px;
  --radius-lg: 6px;

  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Menlo", "Consolas", monospace;
  --font-display: "JetBrains Mono", "Fira Code", monospace;
}

[data-theme="dark"] {
  --bg: #0a0d0a;
  --bg-alt: #0e120e;
  --surface: #121612;
  --surface-2: #171d17;
  --text: #e6ffe6;
  --text-soft: #a9bfaa;
  --muted: #6b7f6c;
  --border: rgba(20, 160, 92, 0.22);
  --border-strong: rgba(20, 160, 92, 0.6);

  --accent: #22ff88;
  --accent-2: #14a05c;
  --amber: #ffb020;

  --shadow-sm: 2px 2px 0 rgba(34, 255, 136, 0.35);
  --shadow-md: 4px 4px 0 rgba(34, 255, 136, 0.35);
  --shadow-lg: 6px 6px 0 rgba(34, 255, 136, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background .25s ease, color .25s ease;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
code, .mono { font-family: var(--font-mono); }

/* CRT scanline background layer for dark mode */
[data-theme="dark"] body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,0.015) 0px,
    rgba(255,255,255,0.015) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* ================= Loader ================= */
#loader {
  position: fixed; inset: 0; background: var(--bg);
  display: grid; place-items: center;
  z-index: 9999; transition: opacity .4s, visibility .4s;
}
#loader.hidden { opacity: 0; visibility: hidden; }
.loader-ring {
  width: 44px; height: 44px; border-radius: 0;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ================= Utilities ================= */
.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.grad-text { color: var(--accent); }
.section { padding: 110px 0; position: relative; z-index: 1; }
.section.alt { background: var(--bg-alt); }
.section.alt::before,
.section.alt::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px;
  background: var(--border-strong);
}
.section.alt::before { top: 0; }
.section.alt::after { bottom: 0; }

.section-head { margin-bottom: 56px; }
.section-tag {
  display: inline-block; font-family: var(--font-mono);
  font-size: 13px; color: var(--accent); margin-bottom: 10px;
  letter-spacing: 0;
}
.section-tag::before { content: "// "; opacity: .6; }
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700; letter-spacing: -0.01em; line-height: 1.1;
}
.section h2::before { content: "> "; color: var(--accent); }

/* ================= Buttons ================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border-radius: var(--radius);
  font-family: var(--font-mono); font-weight: 600; font-size: 14px;
  border: 2px solid var(--text);
  transition: transform .12s ease, box-shadow .12s ease, background .12s;
}
.btn-primary {
  background: var(--accent); color: #0a0d0a;
  border-color: var(--text);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translate(0,0); box-shadow: none; }
.btn-ghost {
  background: transparent; color: var(--text); border-color: var(--text);
  box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow-md); background: var(--surface); }
[data-theme="dark"] .btn-primary { color: #0a0d0a; border-color: var(--accent); }
[data-theme="dark"] .btn-ghost { border-color: var(--accent); color: var(--accent); }

/* ================= Navigation ================= */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 0; transition: background .25s, border-color .25s, padding .25s;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border-bottom-color: var(--border);
  padding: 10px 0;
}
.nav-container {
  max-width: 1180px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-family: var(--font-display); font-weight: 700; font-size: 18px;
  letter-spacing: 0; color: var(--text);
}
.logo span { color: var(--accent); }
.nav-links { display: flex; list-style: none; gap: 4px; }
.nav-links a {
  padding: 8px 14px; font-family: var(--font-mono);
  font-size: 13px; color: var(--text-soft);
  border-radius: var(--radius);
  transition: color .18s, background .18s;
}
.nav-links a::before { content: "["; opacity: 0; margin-right: 4px; color: var(--accent); transition: opacity .18s; }
.nav-links a::after  { content: "]"; opacity: 0; margin-left: 4px; color: var(--accent); transition: opacity .18s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:hover::before, .nav-links a:hover::after,
.nav-links a.active::before, .nav-links a.active::after { opacity: 1; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
#theme-toggle, #menu-toggle {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: var(--radius); border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text);
  transition: background .15s, color .15s;
}
#theme-toggle:hover, #menu-toggle:hover { background: var(--accent); color: #0a0d0a; border-color: var(--accent); }
#menu-toggle { display: none; }

/* ================= Hero ================= */
.hero {
  min-height: 100vh; padding: 130px 24px 80px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
/* remove old blob visuals; replace with grid + subtle noise */
.blob { display: none; }
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero-content {
  position: relative; z-index: 1; width: 100%; max-width: 1180px;
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px; border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface); font-family: var(--font-mono);
  font-size: 12px; color: var(--text-soft);
}
.dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 25%, transparent); animation: pulse 1.8s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px transparent; } }

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.2vw, 62px);
  font-weight: 700; line-height: 1.05; letter-spacing: -0.02em;
  margin: 18px 0;
}
.caret { color: var(--accent); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.lead { font-size: 17px; color: var(--text-soft); max-width: 560px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }

.socials { display: flex; gap: 8px; }
.socials a {
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: var(--radius); border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text-soft);
  transition: all .15s;
}
.socials a:hover { color: #0a0d0a; background: var(--accent); border-color: var(--accent); transform: translate(-2px,-2px); box-shadow: 2px 2px 0 var(--text); }
.socials.big a { width: 46px; height: 46px; font-size: 17px; }

/* Hero visual — terminal window with avatar */
.hero-visual { display: flex; justify-content: center; }
.avatar-wrap {
  position: relative; width: 340px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0; overflow: hidden;
}
.avatar-ring { display: none; }
.avatar-wrap::before {
  content: "● ● ●   ~/ridho.dev";
  display: block; padding: 10px 14px; font-family: var(--font-mono);
  font-size: 12px; color: var(--muted);
  background: var(--surface-2); border-bottom: 1px solid var(--border-strong);
  letter-spacing: 2px;
}
.avatar {
  position: relative; inset: auto;
  width: 100%; aspect-ratio: 1/1;
  border-radius: 0; overflow: hidden; background: var(--surface);
  box-shadow: none;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; filter: contrast(1.03) saturate(0.95); }
[data-theme="dark"] .avatar img { filter: contrast(1.05) saturate(0.85) hue-rotate(-6deg); }

.badge {
  position: absolute; width: 52px; height: 52px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
  display: grid; place-items: center; font-size: 22px; color: var(--text);
  animation: bob 4.5s ease-in-out infinite;
}
.badge-1 { top: 40px;  left: -22px; color: var(--accent); }
.badge-2 { top: 130px; left: -30px; animation-delay: -1.2s; }
.badge-3 { top: 50px;  right: -22px; color: var(--amber); animation-delay: -2s; }
.badge-4 { top: 170px; right: -30px; animation-delay: -3s; }
@keyframes bob {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-10px); }
}

.scroll-hint {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  width: 22px; height: 36px; border: 2px solid var(--text-soft); border-radius: 12px;
  display: grid; place-items: center;
}
.scroll-hint span {
  width: 3px; height: 7px; background: var(--accent); border-radius: 2px;
  animation: scroll 1.5s ease-in-out infinite;
}
@keyframes scroll { 0%,100% { transform: translateY(-6px); opacity: 0; } 50% { transform: translateY(6px); opacity: 1; } }

/* ================= About ================= */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: start; }
.about-text p { color: var(--text-soft); margin-bottom: 14px; font-size: 16px; }
.about-list { list-style: none; margin-top: 24px; display: grid; gap: 10px; }
.about-list li {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-soft); font-family: var(--font-mono); font-size: 13.5px;
}
.about-list i { color: var(--accent); width: 16px; text-align: center; }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stat {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s;
}
.stat:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow-md); }
.stat h3 {
  font-family: var(--font-display); font-size: 34px; color: var(--accent);
  font-weight: 700;
}
.stat p { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }

/* ================= Skills ================= */
.skills-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin-bottom: 56px;
}
.skill-card {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 22px 16px;
  text-align: center; box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s, background .15s;
}
.skill-card:hover {
  transform: translate(-3px,-3px); box-shadow: var(--shadow-md);
  background: var(--surface-2);
}
.skill-card i { font-size: 32px; margin-bottom: 8px; color: var(--accent); }
.skill-card span { display: block; font-family: var(--font-mono); font-weight: 500; font-size: 13px; }

.bars { max-width: 720px; margin: 0 auto; display: grid; gap: 16px; }
.bar-label {
  display: flex; justify-content: space-between; font-family: var(--font-mono);
  font-size: 13px; margin-bottom: 6px;
}
.bar-label > span:last-child { color: var(--accent); }
.bar-track {
  height: 10px; background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); overflow: hidden; padding: 1px;
}
.bar-fill {
  height: 100%; width: 0; background: var(--accent);
  transition: width 1.3s ease;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,.14) 0 4px,
    transparent 4px 8px
  );
}

/* ================= Projects ================= */
.filter-bar { display: flex; justify-content: center; gap: 8px; margin-bottom: 36px; flex-wrap: wrap; }
.filter {
  padding: 8px 18px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 13px;
  color: var(--text-soft); border: 1px solid var(--border-strong);
  background: var(--surface);
  transition: all .15s;
}
.filter:hover { color: var(--text); background: var(--surface-2); }
.filter.active { background: var(--accent); color: #0a0d0a; border-color: var(--accent); font-weight: 600; }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, opacity .25s;
}
.project.hide { display: none; }
.project:hover { transform: translate(-4px,-4px); box-shadow: var(--shadow-lg); }
.project-media {
  position: relative; aspect-ratio: 16/10; overflow: hidden;
  background: var(--bg); border-bottom: 1px solid var(--border-strong);
}
.project-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.project:hover .project-media img { transform: scale(1.04); }
.project-overlay {
  position: absolute; inset: 0; background: rgba(10, 13, 10, 0.7);
  display: flex; align-items: center; justify-content: center; gap: 12px;
  opacity: 0; transition: opacity .2s;
}
.project:hover .project-overlay { opacity: 1; }
.icon-btn {
  width: 44px; height: 44px; border-radius: var(--radius);
  background: var(--accent); color: #0a0d0a;
  display: grid; place-items: center; font-size: 16px;
  border: 2px solid #0a0d0a;
  transition: transform .12s;
}
.icon-btn:hover { transform: scale(1.08); }
.project-body { padding: 22px; }
.project-body h3 { font-family: var(--font-display); font-size: 20px; margin-bottom: 6px; }
.project-body h3::before { content: "$ "; color: var(--accent); font-weight: 400; }
.project-body p { color: var(--text-soft); font-size: 14.5px; margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tags span {
  font-family: var(--font-mono); font-size: 11px;
  padding: 3px 8px; border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  color: var(--text-soft);
}
.tags span::before { content: "#"; color: var(--accent); }

/* ================= Certifications ================= */
.certs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.cert {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius); padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s;
  position: relative;
}
.cert::before {
  content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 4px;
  background: var(--accent);
}
.cert:hover { transform: translate(-3px,-3px); box-shadow: var(--shadow-md); }
.cert-issuer {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--muted); letter-spacing: 1px; text-transform: uppercase;
  margin-bottom: 6px;
}
.cert h4 { font-family: var(--font-display); font-size: 15.5px; line-height: 1.35; margin-bottom: 6px; }
.cert-id { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-soft); }

/* ================= Resume ================= */
.resume-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: center; }
.resume-inner .lead { margin: 16px 0 26px; }
.resume-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.resume-card {
  padding: 36px 28px; text-align: center;
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  transition: transform .18s;
}
.resume-card:hover { transform: translate(-3px,-3px) rotate(-1deg); }
.resume-card i { font-size: 64px; color: var(--accent); margin-bottom: 14px; }
.resume-card h4 { font-family: var(--font-mono); font-size: 15px; margin-bottom: 4px; word-break: break-all; }
.resume-card p { color: var(--muted); font-family: var(--font-mono); font-size: 12px; }

/* ================= Contact ================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 50px; }
.contact-info { display: grid; gap: 14px; align-content: start; }
.info-item {
  display: flex; gap: 14px; align-items: center;
  padding: 18px; background: var(--surface);
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s;
}
.info-item:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow-md); }
.info-item i {
  width: 40px; height: 40px; display: grid; place-items: center;
  background: var(--accent); color: #0a0d0a;
  border: 1px solid #0a0d0a;
  border-radius: var(--radius); flex-shrink: 0;
}
.info-item h4 { font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 2px; color: var(--muted); }
.info-item p { color: var(--text); font-family: var(--font-mono); font-size: 14px; }

.contact-form {
  background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg); padding: 28px;
  box-shadow: var(--shadow-md);
}
.field { margin-bottom: 16px; }
.field label {
  display: block; font-family: var(--font-mono); font-size: 12px;
  margin-bottom: 6px; color: var(--text-soft);
  text-transform: uppercase; letter-spacing: 1px;
}
.field label::before { content: "> "; color: var(--accent); }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--radius);
  border: 1px solid var(--border-strong); background: var(--bg);
  color: var(--text); font-family: var(--font-mono); font-size: 14px;
  transition: border .15s, box-shadow .15s;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent);
}
.field textarea { resize: vertical; min-height: 120px; }
.field .error { color: var(--danger); font-family: var(--font-mono); font-size: 11px; margin-top: 4px; display: block; min-height: 15px; }
.form-status { margin-top: 14px; font-family: var(--font-mono); font-size: 13px; color: var(--accent); }

/* ================= Footer ================= */
footer {
  padding: 36px 0; border-top: 1px solid var(--border-strong);
  background: var(--bg-alt); position: relative; z-index: 1;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; font-family: var(--font-mono);
  font-size: 13px; color: var(--text-soft);
}
.footer-inner i { color: var(--danger); }
.back-top-link { color: var(--accent); }
.back-top-link:hover { text-decoration: underline; }

/* ================= Scroll to top ================= */
#scrollTop {
  position: fixed; bottom: 24px; right: 24px; width: 44px; height: 44px;
  border-radius: var(--radius); background: var(--accent); color: #0a0d0a;
  border: 2px solid var(--text);
  box-shadow: var(--shadow-sm);
  opacity: 0; visibility: hidden;
  transition: all .2s; z-index: 90;
}
#scrollTop.visible { opacity: 1; visibility: visible; }
#scrollTop:hover { transform: translate(-2px,-2px); box-shadow: var(--shadow-md); }

/* ================= Reveal ================= */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ================= Selection ================= */
::selection { background: var(--accent); color: #0a0d0a; }

/* ================= Responsive ================= */
@media (max-width: 960px) {
  .hero-content, .about-grid, .contact-grid, .resume-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .avatar-wrap { max-width: 300px; }
  .projects-grid, .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 720px) {
  .section { padding: 70px 0; }
  #menu-toggle { display: grid; }
  .nav-links {
    position: fixed; top: 68px; right: 16px; left: 16px;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 14px; background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
    transform: translateY(-16px); opacity: 0; pointer-events: none;
    transition: all .25s ease;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 10px 14px; }
  .projects-grid, .certs-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero { padding-top: 110px; }
  .hero-text h1 { font-size: 36px; }
  .stat h3 { font-size: 28px; }
}