/* ================================================================
   PORTFOLIO.CSS — Muhammad Ilyas | Full Stack Developer
   Design system: dark terminal-inspired UI, electric blue + violet
   accents, Space Grotesk / Inter / JetBrains Mono type system.
   ================================================================ */

/* ---------------------------------------------------------------
   1. TOKENS
   --------------------------------------------------------------- */
:root,
[data-theme="dark"] {
  /* surfaces */
  --bg-primary:      #0A0A0A;
  --bg-secondary:    #111111;
  --card-bg:         #111111;
  --card-bg-hover:   #1C1C1C;
  --border:          rgba(255,255,255,0.08);
  --border-strong:   rgba(255,255,255,0.16);

  /* text */
  --text-primary:    #E0E0E0;
  --text-secondary:  #999999;
  --text-tertiary:   #666666;

  /* accents */
  --primary:         #ff2e2e;
  --primary-dark:    #d12525;
  --primary-light:   rgba(255,46,46,0.12);
  --primary-dim:     rgba(255,46,46,0.35);
  --accent-secondary:#34D8C5;
  --accent-tertiary: #FF8A3D;
  --success:         #10b981;
  --warning:         #f59e0b;
  --danger:          #ef4444;
  --star:            #fbbf24;

  /* type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* misc */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-soft: 0 20px 50px -20px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 0 1px var(--primary-dim), 0 20px 60px -25px rgba(255,46,46,0.35);
  --ease: cubic-bezier(0.4,0,0.2,1);
  --ease-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition: all 0.4s var(--ease-bounce);
}

[data-theme="light"] {
  --bg-primary:      #FBF8F7;
  --bg-secondary:    #FFFFFF;
  --card-bg:         #FFFFFF;
  --card-bg-hover:   #FDF1EF;
  --border:          rgba(20,10,10,0.08);
  --border-strong:   rgba(20,10,10,0.14);
  --text-primary:    #16130F;
  --text-secondary:  #6B625D;
  --text-tertiary:   #9B928D;
  --primary:         #e11f1f;
  --primary-dark:    #b81818;
  --primary-light:   rgba(225,31,31,0.08);
  --primary-dim:     rgba(225,31,31,0.25);
  --shadow-soft: 0 20px 50px -25px rgba(30,10,10,0.14);
  --shadow-glow: 0 0 0 1px var(--primary-dim), 0 20px 60px -25px rgba(225,31,31,0.18);
}

/* ---------------------------------------------------------------
   2. RESET & BASE
   --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .4s var(--ease), color .4s var(--ease);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 110px 0; position: relative; }
.navbar-spacing { padding-top: 84px; }
@media (max-width: 768px) {
  .section-padding { padding: 72px 0; }
}

h1,h2,h3,h4 { font-family: var(--font-display); font-weight: 700; margin: 0; color: var(--text-primary); }
p { margin: 0; }

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------------------------------------------------------------
   3. SHARED PATTERNS — eyebrow tag, buttons, terminal-card chrome
   --------------------------------------------------------------- */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--primary);
  background: var(--primary-light);
  border: 1px solid var(--primary-dim);
  padding: 6px 14px;
  border-radius: 999px;
}
.section-tag::before { content: "//"; opacity: 0.6; }

.section-header { text-align: center; max-width: 680px; margin: 0 auto 60px; }
.section-title { font-size: clamp(1.9rem, 3.2vw, 2.7rem); margin: 18px 0 14px; letter-spacing: -0.01em; }
.section-title span { color: var(--primary); }
.section-subtitle { color: var(--text-secondary); font-size: 1.05rem; }

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent-tertiary));
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(255,46,46,0.55);
}
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 40px -12px rgba(255,46,46,0.65); transition: var(--transition); }
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-3px) scale(1.02); transition: var(--transition); }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }
.btn-lg { padding: 16px 34px; font-size: 1.02rem; }
.btn-block { width: 100%; justify-content: center; }

/* magnetic buttons get a subtle press affordance (JS adds transform) */
[data-magnetic] { will-change: transform; }

/* terminal window chrome — signature element for cards */
.skill-card, .service-card, .learning-card, .capability-card {
  position: relative;
  padding-top: 40px !important;
}
.skill-card::before, .service-card::before, .learning-card::before, .capability-card::before {
  content: "";
  position: absolute;
  top: 16px; left: 20px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 18px 0 0 var(--warning), 36px 0 0 var(--success);
  opacity: 0.55;
}

/* reveal-on-scroll */
.reveal, .reveal-left, .reveal-right { opacity: 0; transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal { transform: translateY(28px); }
.reveal-left { transform: translateX(-32px); }
.reveal-right { transform: translateX(32px); }
.reveal.in-view, .reveal-left.in-view, .reveal-right.in-view { opacity: 1; transform: none; }
.delay-100.in-view { transition-delay: .1s; }
.delay-200.in-view { transition-delay: .2s; }
.delay-300.in-view { transition-delay: .3s; }

@keyframes fadeInUp { from { opacity:0; transform: translateY(18px);} to { opacity:1; transform:none; } }

/* ---------------------------------------------------------------
   4. GLOBAL CHROME — loader, scroll progress, toasts, theme toggle
   --------------------------------------------------------------- */
#scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent-tertiary));
  z-index: 9999;
}

#page-loader {
  position: fixed; inset: 0; z-index: 9998;
  background: var(--bg-primary);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 18px;
  transition: opacity .5s var(--ease);
}
#page-loader.loader-fade-out { opacity: 0; pointer-events: none; }
.loader-logo { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--primary); letter-spacing: 0.05em; }
.loader-bar-wrap { width: 160px; height: 3px; background: var(--border); border-radius: 3px; overflow: hidden; }
.loader-bar { width: 40%; height: 100%; background: var(--primary); animation: loaderMove 1.1s ease-in-out infinite; border-radius: 3px; }
@keyframes loaderMove { 0%{ transform: translateX(-100%);} 100%{ transform: translateX(350%);} }

.toast-container {
  position: fixed; bottom: 24px; right: 24px; z-index: 9997;
  display: flex; flex-direction: column; gap: 10px; max-width: 340px;
}
.toast {
  display: flex; align-items: center; gap: 12px;
  background: var(--card-bg); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding: 14px 16px;
  box-shadow: var(--shadow-soft);
  transform: translateX(120%); opacity: 0;
  transition: transform .35s var(--ease), opacity .35s var(--ease);
  position: relative; overflow: hidden;
}
.toast-visible { transform: translateX(0); opacity: 1; }
.toast-slide-out { transform: translateX(120%); opacity: 0; }
.toast-icon { font-size: 1.1rem; }
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--primary); }
.toast-message { font-size: 0.88rem; color: var(--text-primary); }
.toast-close { background: none; border: none; color: var(--text-tertiary); font-size: 0.8rem; }
.toast-progress { position: absolute; bottom: 0; left: 0; height: 2px; background: var(--primary); width: 100%; animation: toastShrink linear forwards; }
@keyframes toastShrink { from { width: 100%; } to { width: 0%; } }

.theme-toggle {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--card-bg); border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: color .3s var(--ease), border-color .3s var(--ease), transform .2s var(--ease);
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); }
.theme-toggle-animate { transform: rotate(180deg) scale(1.1); }

/* ---------------------------------------------------------------
   5. NAVBAR
   --------------------------------------------------------------- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 999;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 32px;
  background: transparent;
  transition: background .35s var(--ease), padding .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(10,10,10,0.75);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  padding: 13px 32px;
}
[data-theme="light"] .navbar.scrolled { background: rgba(255,255,255,0.78); }
.navbar.navbar-hidden { transform: translateY(-100%); }

.nav-logo { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--text-primary); }
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  font-size: 0.92rem; color: var(--text-secondary); font-weight: 500;
  position: relative; padding: 4px 0; transition: color .25s var(--ease);
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -3px; height: 2px; width: 0;
  background: var(--primary); transition: width .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 14px; }
.btn-hire {
  font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600;
  padding: 10px 20px; border-radius: var(--radius-sm);
  background: var(--primary); color: #fff;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.btn-hire:hover { transform: translateY(-2px); box-shadow: 0 10px 26px -10px var(--primary-dim); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: 8px;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text-primary); transition: transform .3s var(--ease), opacity .3s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed; top: 0; right: 0; height: 100vh; width: min(78vw, 320px);
  background: var(--bg-secondary); border-left: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 4px; padding: 100px 28px 28px;
  transform: translateX(100%); transition: transform .4s var(--ease);
  z-index: 998;
}
.mobile-menu.mobile-menu-open { transform: translateX(0); }
.mobile-menu a { padding: 14px 4px; font-size: 1.02rem; color: var(--text-primary); border-bottom: 1px solid var(--border); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .btn-hire { display: none; }
}

/* ---------------------------------------------------------------
   6. HERO
   --------------------------------------------------------------- */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  padding-top: 80px;
  --scroll: 0;
}
#hero-canvas { position: absolute; inset: 0; z-index: 0; opacity: 0.6; }

/* animated aurora mesh — slow rotating conic gradient, blended for depth */
.hero-gradient {
  position: absolute; inset: -20%; z-index: 1;
  background:
    radial-gradient(ellipse 42% 38% at 24% 22%, rgba(255,46,46,0.22), transparent 62%),
    radial-gradient(ellipse 38% 34% at 78% 68%, rgba(255,138,61,0.16), transparent 60%),
    radial-gradient(ellipse 30% 30% at 60% 15%, rgba(52,216,197,0.10), transparent 60%),
    conic-gradient(from 0deg at 50% 50%, rgba(255,46,46,0.05), transparent 25%, rgba(255,138,61,0.05), transparent 55%, rgba(255,46,46,0.05));
  animation: meshDrift 22s linear infinite;
  transform: translateY(calc(var(--scroll, 0) * -40px));
  mix-blend-mode: screen;
}
[data-theme="light"] .hero-gradient { mix-blend-mode: normal; opacity: 0.7; }
@keyframes meshDrift {
  0%   { transform: rotate(0deg) translateY(calc(var(--scroll, 0) * -40px)); }
  100% { transform: rotate(360deg) translateY(calc(var(--scroll, 0) * -40px)); }
}

/* fine grid, subtle parallax against scroll */
.hero-grid {
  position: absolute; inset: 0; z-index: 1;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
  opacity: 0.5;
  transform: translateY(calc(var(--scroll, 0) * -18px));
}

/* soft grain texture for a premium, non-flat finish */
.hero-gradient::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.6;
}

/* scanline sweep — a slow light beam, terminal-boot signature (no extra markup needed) */
#hero::after {
  content: "";
  position: absolute; left: 0; right: 0; top: -140px; height: 140px; z-index: 1;
  background: linear-gradient(180deg, transparent, rgba(255,46,46,0.07), transparent);
  animation: scanSweep 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes scanSweep {
  0%   { top: -140px; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

.blob { position: absolute; border-radius: 50%; filter: blur(90px); z-index: 1; opacity: 0.35; animation: blobFloat 14s ease-in-out infinite; }
.blob-1 { width: 380px; height: 380px; background: var(--primary); top: -80px; left: -100px; }
.blob-2 { width: 320px; height: 320px; background: var(--accent-tertiary); bottom: -60px; right: -80px; animation-delay: -4s; }
.blob-3 { width: 260px; height: 260px; background: var(--accent-secondary); top: 40%; left: 55%; animation-delay: -8s; }
@keyframes blobFloat {
  0%,100% { transform: translate(0,0) scale(1) translateY(calc(var(--scroll, 0) * -60px)); }
  50%     { transform: translate(30px,-30px) scale(1.08) translateY(calc(var(--scroll, 0) * -60px)); }
}

.hero-content { transition: opacity .2s linear, transform .2s linear; }

.hero-content { position: relative; z-index: 2; max-width: 760px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 0.8rem; color: var(--success);
  background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3);
  padding: 7px 16px; border-radius: 999px; margin-bottom: 26px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); animation: dotPulse 1.6s ease-in-out infinite; }
@keyframes dotPulse { 0%,100%{ opacity:1; box-shadow:0 0 0 0 rgba(16,185,129,.5);} 50%{ opacity:.6; box-shadow:0 0 0 6px rgba(16,185,129,0);} }

.hero-greeting { font-family: var(--font-mono); color: var(--text-secondary); font-size: 1rem; margin-bottom: 10px; }
.hero-name { font-size: clamp(2.8rem, 7vw, 5rem); line-height: 1.02; letter-spacing: -0.02em; margin-bottom: 14px; }
.hero-name .first { color: var(--text-primary); }
.hero-name .last { background: linear-gradient(120deg, var(--primary), var(--accent-tertiary)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-username { font-family: var(--font-mono); color: var(--text-tertiary); margin-bottom: 26px; }
.hero-username span { color: var(--primary); }

.hero-typing-wrap { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: clamp(1.2rem, 2.4vw, 1.6rem); margin-bottom: 22px; flex-wrap: wrap; }
.hero-prefix { color: var(--text-secondary); }
#typed-text { color: var(--primary); font-weight: 600; }
.typed-cursor { width: 2px; height: 1.3em; background: var(--primary); display: inline-block; animation: cursorBlink 0.9s steps(1) infinite; }
@keyframes cursorBlink { 50% { opacity: 0; } }

.hero-bio { color: var(--text-secondary); font-size: 1.08rem; max-width: 540px; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 46px; }

.hero-socials { display: flex; align-items: center; gap: 14px; }
.hero-socials span { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-tertiary); }
.social-icon-link {
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--card-bg); border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.social-icon-link:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-3px); }

.hero-float-cards { position: absolute; right: 6%; top: 50%; transform: translateY(-50%); z-index: 2; display: flex; flex-direction: column; gap: 18px; }
.float-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--card-bg); border: 1px solid var(--border);
  padding: 14px 18px; border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  animation: cardFloat 5s ease-in-out infinite;
}
.float-card:nth-child(2) { animation-delay: -1.6s; }
.float-card:nth-child(3) { animation-delay: -3.2s; }
@keyframes cardFloat { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-12px);} }
.float-card-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; color: #fff; }
.float-card-icon.purple { background: linear-gradient(135deg,var(--accent-tertiary),var(--primary-dark)); }
.float-card-icon.cyan { background: linear-gradient(135deg,var(--accent-secondary),#199C8C); }
.float-card-icon.green { background: linear-gradient(135deg,var(--success),#0C8C64); }
.float-card-text { display: flex; flex-direction: column; }
.float-card-text strong { font-size: 0.9rem; color: var(--text-primary); }
.float-card-text span { font-size: 0.78rem; color: var(--text-tertiary); }
@media (max-width: 1100px) { .hero-float-cards { display: none; } }

.hero-scroll { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 2; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.scroll-mouse { width: 24px; height: 38px; border: 2px solid var(--border-strong); border-radius: 14px; display: flex; justify-content: center; padding-top: 6px; }
.scroll-wheel { width: 3px; height: 8px; background: var(--primary); border-radius: 2px; animation: scrollWheel 1.6s ease-in-out infinite; }
@keyframes scrollWheel { 0%{ opacity:1; transform: translateY(0);} 100%{ opacity:0; transform: translateY(10px);} }
.hero-scroll span { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.15em; color: var(--text-tertiary); }

/* ---------------------------------------------------------------
   7. ABOUT
   --------------------------------------------------------------- */
.about-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: center; }
.about-image-wrap { position: relative; }
.about-image-frame {
  border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border);
  aspect-ratio: 4/5; background: var(--card-bg);
  box-shadow: var(--shadow-soft);
}
.about-image { width: 100%; height: 100%; object-fit: cover; }
.about-stats { position: absolute; bottom: -24px; left: -24px; display: flex; gap: 14px; }
.about-stat-card {
  background: var(--card-bg); border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm); padding: 16px 20px; box-shadow: var(--shadow-soft);
  min-width: 100px; text-align: center;
}
.about-stat-num { font-family: var(--font-display); font-size: 1.6rem; color: var(--primary); }
.about-stat-label { font-size: 0.75rem; color: var(--text-secondary); }

.about-tag { margin-bottom: 20px; }
.about-title { font-size: clamp(1.9rem,3vw,2.5rem); margin-bottom: 22px; line-height: 1.2; }
.about-title span { color: var(--primary); }
.about-text { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.75; }
.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 28px 0 34px; }
.about-highlight-item { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; color: var(--text-primary); }
.about-highlight-item i { color: var(--success); }
.about-cta { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 70px; }
  .about-stats { position: static; margin-top: 20px; justify-content: center; }
  .about-highlights { grid-template-columns: 1fr; }
}

/* ---------------------------------------------------------------
   8. SKILLS
   --------------------------------------------------------------- */
.skills-categories { display: flex; flex-direction: column; gap: 54px; }
.skills-category-title { font-size: 1.15rem; margin-bottom: 24px; color: var(--text-primary); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px,1fr)); gap: 20px; }
.skill-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 22px; padding-top: 40px;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.skill-card:hover { transform: translateY(-6px); border-color: var(--primary-dim); box-shadow: var(--shadow-glow); }
.skill-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.skill-icon-wrap { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1.2rem; }
.skill-percent { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-tertiary); }
.skill-name { font-weight: 600; margin-bottom: 14px; }
.skill-bar-track { height: 6px; background: var(--border); border-radius: 4px; overflow: hidden; }
.skill-bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), var(--accent-tertiary)); border-radius: 4px; }

.other-skills-grid { display: flex; flex-wrap: wrap; gap: 12px; }
.skill-tag {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.86rem; font-family: var(--font-mono);
  padding: 10px 16px; border-radius: 999px;
  background: var(--card-bg); border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.skill-tag:hover { color: var(--primary); border-color: var(--primary-dim); }
.skill-tag i { color: var(--primary); }

/* ---------------------------------------------------------------
   9. LEARNING
   --------------------------------------------------------------- */
.learning-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 24px; }
.learning-card {
  position: relative; background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 26px; padding-top: 40px; overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.learning-card:hover { transform: translateY(-6px); border-color: var(--primary-dim); }
.learning-card-glow { position: absolute; top: -40%; right: -30%; width: 220px; height: 220px; background: var(--primary); filter: blur(90px); opacity: 0.12; }
.learning-icon { width: 46px; height: 46px; border-radius: 12px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; margin-bottom: 18px; }
.learning-title { font-size: 1.1rem; margin-bottom: 10px; }
.learning-desc { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.65; margin-bottom: 22px; }
.learning-progress-top { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-tertiary); margin-bottom: 8px; }
.learning-bar-track { height: 5px; background: var(--border); border-radius: 4px; overflow: hidden; }
.learning-bar-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent-secondary), var(--primary)); border-radius: 4px; }

/* ---------------------------------------------------------------
   10. SERVICES
   --------------------------------------------------------------- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 24px; }
.service-card {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 28px; padding-top: 42px;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.service-card:hover { transform: translateY(-6px); border-color: var(--primary-dim); box-shadow: var(--shadow-glow); }
.service-icon-wrap { width: 48px; height: 48px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--accent-tertiary)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 20px; }
.service-title { font-size: 1.15rem; margin-bottom: 12px; }
.service-desc { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.65; margin-bottom: 20px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tag { font-family: var(--font-mono); font-size: 0.72rem; padding: 5px 11px; border-radius: 999px; background: var(--primary-light); color: var(--primary); }

/* ---------------------------------------------------------------
   11. PROJECTS (home section)
   --------------------------------------------------------------- */
.project-filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 46px; }
.filter-btn {
  font-family: var(--font-mono); font-size: 0.82rem;
  padding: 10px 18px; border-radius: 999px;
  background: var(--card-bg); border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all .25s var(--ease);
}
.filter-btn:hover { color: var(--text-primary); border-color: var(--border-strong); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px,1fr)); gap: 26px; }
.project-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-md);
  overflow: hidden; transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease);
}
.project-card:hover { transform: translateY(-8px); border-color: var(--primary-dim); box-shadow: var(--shadow-glow); }
.project-card.hidden { display: none; }
.project-img-wrap { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.project-img-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.project-emoji { font-size: 3rem; filter: drop-shadow(0 6px 14px rgba(0,0,0,.3)); }
.project-overlay {
  position: absolute; inset: 0; background: rgba(10,10,10,0.75);
  display: flex; align-items: center; justify-content: center; gap: 12px;
  opacity: 0; transition: opacity .3s var(--ease);
}
.project-card:hover .project-overlay { opacity: 1; }
.project-category {
  position: absolute; top: 12px; left: 12px;
  font-family: var(--font-mono); font-size: 0.72rem;
  background: rgba(10,10,10,0.7); color: #fff;
  padding: 6px 12px; border-radius: 999px;
}
.project-body { padding: 22px; }
.project-title { font-size: 1.12rem; margin-bottom: 10px; }
.project-desc { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.6; margin-bottom: 16px; }
.project-features { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.feature-badge { font-size: 0.72rem; color: var(--text-tertiary); display: flex; align-items: center; gap: 5px; }
.feature-badge i { color: var(--success); font-size: 0.7rem; }
.feature-badge.more-features { color: var(--primary); }
.project-tech { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tech-badge { font-family: var(--font-mono); font-size: 0.7rem; padding: 5px 10px; border-radius: 6px; background: var(--primary-light); color: var(--primary); }
.tech-badge.more-tech { background: var(--border); color: var(--text-secondary); }
.project-links { display: flex; gap: 10px; flex-wrap: wrap; }

.projects-stats-bar {
  display: flex; flex-wrap: wrap; justify-content: space-around; gap: 20px;
  margin-top: 60px; padding: 30px; background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.stat-item { text-align: center; }
.stat-number { display: block; font-family: var(--font-display); font-size: 1.8rem; color: var(--primary); }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }

/* ---------------------------------------------------------------
   12. COLLABORATION
   --------------------------------------------------------------- */
#collaboration { position: relative; overflow: hidden; }
.collab-bg { position: absolute; inset: 0; background: radial-gradient(ellipse 60% 60% at 80% 30%, rgba(255,138,61,0.12), transparent 65%); }
.collab-inner { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.collab-title { font-size: clamp(1.9rem,3vw,2.5rem); margin: 18px 0 20px; }
.collab-title span { color: var(--primary); }
.collab-text { color: var(--text-secondary); line-height: 1.75; margin-bottom: 30px; max-width: 480px; }
.collab-list { display: flex; flex-direction: column; gap: 14px; }
.collab-item { display: flex; align-items: center; gap: 14px; }
.collab-item-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; }
.collab-item-text { font-size: 0.94rem; color: var(--text-primary); }

.collab-visual { display: flex; justify-content: center; }
.collab-orbit { position: relative; width: 340px; height: 340px; }
.orbit-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 74px; height: 74px; border-radius: 50%;
  background: linear-gradient(135deg,var(--primary),var(--accent-tertiary));
  display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.5rem;
  box-shadow: 0 0 50px rgba(255,46,46,0.35);
}
.orbit-ring { position: absolute; top: 50%; left: 50%; border: 1px dashed var(--border-strong); border-radius: 50%; transform: translate(-50%,-50%); animation: orbitSpin linear infinite; }
.orbit-ring-1 { width: 190px; height: 190px; animation-duration: 16s; }
.orbit-ring-2 { width: 320px; height: 320px; animation-duration: 26s; animation-direction: reverse; }
@keyframes orbitSpin { from { transform: translate(-50%,-50%) rotate(0deg); } to { transform: translate(-50%,-50%) rotate(360deg); } }
.orbit-icon {
  position: absolute; width: 40px; height: 40px; border-radius: 50%;
  background: var(--card-bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; color: var(--primary);
  animation: orbitCounterSpin linear infinite; animation-duration: inherit;
}
@keyframes orbitCounterSpin { from { transform: rotate(0deg); } to { transform: rotate(-360deg); } }
.orbit-ring-1 .orbit-icon:nth-child(1) { top: -20px; left: 50%; margin-left: -20px; }
.orbit-ring-1 .orbit-icon:nth-child(2) { bottom: -20px; left: 50%; margin-left: -20px; }
.orbit-ring-2 .orbit-icon:nth-child(1) { top: -20px; left: 50%; margin-left: -20px; }
.orbit-ring-2 .orbit-icon:nth-child(2) { right: -20px; top: 50%; margin-top: -20px; }
.orbit-ring-2 .orbit-icon:nth-child(3) { bottom: -20px; left: 50%; margin-left: -20px; }
.orbit-ring-2 .orbit-icon:nth-child(4) { left: -20px; top: 50%; margin-top: -20px; }

@media (max-width: 900px) {
  .collab-inner { grid-template-columns: 1fr; text-align: center; }
  .collab-text { margin: 0 auto 30px; }
  .collab-list { align-items: center; }
  .collab-item { flex-direction: column; }
}

/* ---------------------------------------------------------------
   13. CAPABILITIES
   --------------------------------------------------------------- */
.capabilities-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 22px; }
.capability-card {
  display: flex; gap: 18px; background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 26px; padding-top: 42px;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.capability-card:hover { transform: translateY(-5px); border-color: var(--primary-dim); }
.capability-num { font-family: var(--font-mono); font-size: 1.6rem; color: var(--primary-dim); font-weight: 700; }
.capability-title { font-size: 1.05rem; margin-bottom: 10px; }
.capability-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* ---------------------------------------------------------------
   14. CONTACT
   --------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; }
.contact-title { font-size: clamp(1.7rem,2.6vw,2.2rem); margin-bottom: 18px; }
.contact-title span { color: var(--primary); }
.contact-text { color: var(--text-secondary); line-height: 1.75; margin-bottom: 32px; }

.contact-cards { display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; }
.contact-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 16px 20px;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.contact-card:hover { border-color: var(--primary-dim); transform: translateX(4px); }
.contact-card-icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem; }
.contact-card-icon.email { background: linear-gradient(135deg, var(--primary), var(--accent-tertiary)); }
.contact-card-icon.github { background: linear-gradient(135deg, #333, #1a1a1a); }
.contact-card-label { font-size: 0.75rem; color: var(--text-tertiary); }
.contact-card-value { font-family: var(--font-mono); font-size: 0.92rem; color: var(--text-primary); }
.contact-socials { display: flex; gap: 12px; }

.contact-form-wrap { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 34px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.86rem; color: var(--text-secondary); margin-bottom: 8px; }
.form-control {
  width: 100%; padding: 13px 16px; font-family: var(--font-body); font-size: 0.94rem;
  background: var(--bg-secondary); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  color: var(--text-primary); transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-control.error { border-color: var(--danger); }
textarea.form-control { min-height: 130px; resize: vertical; }
.form-error { display: block; font-size: 0.78rem; color: var(--danger); margin-top: 6px; min-height: 1em; }
.form-submit { margin-top: 6px; }
.btn-submit { position: relative; }
.btn-submit .spinner {
  display: none; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite;
}
.btn-submit.loading .btn-text { opacity: 0; }
.btn-submit.loading .spinner { display: block; position: absolute; left: 50%; top: 50%; margin: -8px 0 0 -8px; }
@keyframes spin { to { transform: rotate(360deg); } }

.form-success { text-align: center; padding: 40px 20px; }
.form-success-icon {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  background: rgba(16,185,129,0.12); color: var(--success);
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
}
.form-success h4 { margin-bottom: 8px; }
.form-success p { color: var(--text-secondary); }

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; gap: 46px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 24px; }
}

/* ---------------------------------------------------------------
   15. FOOTER
   --------------------------------------------------------------- */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 70px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 50px; }
.footer-logo { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; display: inline-block; }
.footer-tagline { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.65; margin-bottom: 22px; max-width: 320px; }
.footer-socials { display: flex; gap: 10px; }
.footer-col-title { font-size: 0.95rem; margin-bottom: 20px; color: var(--text-primary); }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: var(--text-secondary); font-size: 0.88rem; transition: color .25s var(--ease); display: flex; align-items: center; }
.footer-links a:hover { color: var(--primary); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 26px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 14px; }
.footer-copy { color: var(--text-tertiary); font-size: 0.85rem; }
.footer-copy span { color: var(--text-primary); }
.back-to-top {
  width: 40px; height: 40px; border-radius: 50%; background: var(--card-bg); border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center; color: var(--text-secondary);
  transition: color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.back-to-top:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-3px); }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-image {
  transform: scale(1.05); /* Hover par zoom */
}

/* Fallback icon styling */
.project-img-placeholder i {
  font-size: 4rem;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}