/* ==========================================================================
   ARIBA — PORTFOLIO
   A single-page developer portfolio styled like a code editor:
   the sidebar acts as a file explorer, section labels read like code
   comments, and the hero features a live-typed source snippet.
   Built with HTML5, CSS3, Bootstrap 5 (layout/grid/utilities) + custom CSS.
   ========================================================================== */
   
   
   @import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root{
  --black:#050506;
  --black-soft:#0b0b0e;
  --panel:#121216;
  --panel-light:#1a1a1f;
  --red:#ff2d3f;
  --red-deep:#8a0e1a;
  --red-glow:rgba(255,45,63,.45);
  --white:#f4f4f6;
  --gray:#9a9aa3;
  --gray-dim:#55555e;
  --border:rgba(255,255,255,.08);
  --sidebar-w:290px;
  --navbar-h:70px;
  --ease:cubic-bezier(.65,0,.35,1);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--black);
  color:var(--white);
  font-family:'IBM Plex Sans',sans-serif;
  font-weight:300;
  overflow-x:hidden;
  line-height:1.7;
}
::selection{background:var(--red);color:#fff;}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease);}
img{max-width:100%;display:block;}
button{font-family:inherit;}

h1,h2,h3,h4,h5,h6{
  font-family:'Space Grotesk',sans-serif;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--white);
}
.mono{font-family:'JetBrains Mono',monospace;}
.text-red{color:var(--red)!important;}
.text-gray{color:var(--gray)!important;}

/* thin custom scrollbar, dev-tool style */
::-webkit-scrollbar{width:9px;height:9px;}
::-webkit-scrollbar-track{background:var(--black);}
::-webkit-scrollbar-thumb{background:var(--panel-light);border-radius:10px;}
::-webkit-scrollbar-thumb:hover{background:var(--red-deep);}

:focus-visible{outline:2px solid var(--red);outline-offset:3px;}

.container-xl-custom{max-width:1240px;margin:0 auto;padding:0 clamp(20px,5vw,60px);}

/* ==========================================================================
   PRELOADER — terminal boot sequence
   ========================================================================== */
#preloader{
  position:fixed;inset:0;z-index:9999;
  background:var(--black);
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  overflow:hidden;
  transition:opacity .6s var(--ease), visibility .6s var(--ease);
}
#preloader.is-hidden{opacity:0;visibility:hidden;pointer-events:none;}
#preloader-matrix-canvas{
  position:absolute;inset:0;width:100%;height:100%;
  opacity:.28;pointer-events:none;z-index:0;
}
.terminal{
  position:relative;z-index:1;
  width:min(520px,86vw);
  max-width:100%;
  max-height:calc(100vh - 48px);
  max-height:calc(100dvh - 48px);
  display:flex;flex-direction:column;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:10px;
  box-shadow:0 30px 80px -20px rgba(255,45,63,.15), 0 0 0 1px rgba(255,255,255,.02);
  overflow:hidden;
}
.terminal__bar{
  display:flex;align-items:center;gap:8px;
  padding:11px 14px;
  background:var(--panel-light);
  border-bottom:1px solid var(--border);
  flex:0 0 auto;
}
.terminal__dot{width:10px;height:10px;border-radius:50%;}
.terminal__dot:nth-child(1){background:#ff2d3f;}
.terminal__dot:nth-child(2){background:#55555e;}
.terminal__dot:nth-child(3){background:#8a0e1a;}
.terminal__title{
  margin-left:8px;font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--gray);
}
.terminal__body{
  padding:20px 22px 24px;
  font-family:'JetBrains Mono',monospace;
  font-size:.82rem;
  min-height:170px;
  flex:1 1 auto;
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  word-break:break-word;
  overflow-wrap:anywhere;
}
.terminal__line{
  color:var(--gray);
  margin-bottom:8px;
  opacity:0;
  animation:tline .4s forwards;
  display:flex;flex-wrap:wrap;column-gap:6px;
}
.terminal__line .ok{color:var(--red);}
.terminal__line .path{color:var(--white);}
@keyframes tline{to{opacity:1;}}
.terminal__progress-row{
  display:flex;align-items:center;gap:10px;margin-top:14px;
}
.terminal__bar-track{
  flex:1;height:6px;border-radius:6px;background:var(--panel-light);overflow:hidden;
}
.terminal__bar-fill{
  height:100%;width:0%;
  background:linear-gradient(90deg,var(--red-deep),var(--red));
  transition:width .15s linear;
}
.terminal__percent{
  font-family:'JetBrains Mono',monospace;color:var(--red);font-size:.82rem;min-width:38px;text-align:right;
}
.terminal__cursor{
  display:inline-block;width:7px;height:14px;background:var(--red);
  animation:blink 1s step-end infinite;vertical-align:middle;margin-left:2px;
}
@keyframes blink{50%{opacity:0;}}

/* ==========================================================================
   CUSTOM CURSOR
   ========================================================================== */
.cursor-dot,.cursor-ring{
  position:fixed;top:0;left:0;pointer-events:none;z-index:9998;
  border-radius:50%;transform:translate(-50%,-50%);
}
.cursor-dot{width:6px;height:6px;background:var(--red);transition:opacity .2s;}
.cursor-ring{
  width:34px;height:34px;border:1px solid var(--red-glow);
  transition:width .25s var(--ease),height .25s var(--ease),opacity .2s,background .25s;
}
.cursor-ring.is-active{width:54px;height:54px;background:rgba(255,45,63,.08);}
body.no-cursor .cursor-dot,body.no-cursor .cursor-ring{display:none;}

/* ==========================================================================
   SCROLL PROGRESS BAR
   ========================================================================== */
#scroll-progress{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--red-deep),var(--red));
  z-index:1200;transition:width .1s linear;
  box-shadow:0 0 12px var(--red-glow);
}

/* ==========================================================================
   SIDEBAR (desktop) — styled like an editor's file-explorer panel
   ========================================================================== */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--panel);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  z-index:1000;
  overflow-y:auto;
}
.sidebar__logo{
  display:flex;align-items:center;gap:10px;
  padding:26px 24px 20px;
  border-bottom:1px solid var(--border);
}
.sidebar__logo-mark{
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:1.05rem;
  color:var(--red);letter-spacing:-.02em;
}
.sidebar__logo-mark span{color:var(--white);}
.sidebar__logo-tag{
  font-family:'JetBrains Mono',monospace;font-size:.62rem;color:var(--gray-dim);
  margin-left:auto;border:1px solid var(--border);padding:2px 7px;border-radius:20px;
}

.sidebar__profile{
  padding:26px 24px;text-align:center;border-bottom:1px solid var(--border);
}
.sidebar__avatar{
  position:relative;width:106px;height:106px;margin:0 auto 16px;
}
.sidebar__avatar img{
  width:100%;height:100%;object-fit:cover;border-radius:50%;
  border:2px solid var(--panel-light);
  box-shadow:0 0 0 5px rgba(255,45,63,.08), 0 12px 30px -8px rgba(0,0,0,.6);
  transition:transform .4s var(--ease);
}
.sidebar__avatar:hover img{transform:scale(1.05) rotate(-1deg);}
.sidebar__avatar-status{
  position:absolute;bottom:2px;right:2px;width:18px;height:18px;border-radius:50%;
  background:var(--red);border:3px solid var(--panel);box-shadow:0 0 8px var(--red-glow);
}
.sidebar__name{font-family:'Space Grotesk',sans-serif;font-size:1.15rem;font-weight:700;margin-bottom:4px;}
.sidebar__role{
  font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--red);
  display:block;min-height:16px;
}

.sidebar__meta{list-style:none;padding:18px 22px;border-bottom:1px solid var(--border);}
.sidebar__meta li{
  display:flex;align-items:center;gap:10px;
  font-size:.78rem;color:var(--gray);padding:7px 0;
  word-break:break-word;
}
.sidebar__meta li i{color:var(--red);font-size:.85rem;width:16px;text-align:center;flex-shrink:0;}
.sidebar__meta li a{color:var(--gray);}
.sidebar__meta li a:hover{color:var(--white);}

.sidebar__nav{flex:1;padding:14px 12px;}
.sidebar__nav-eyebrow{
  font-family:'JetBrains Mono',monospace;font-size:.62rem;color:var(--gray-dim);
  padding:8px 12px 6px;letter-spacing:.03em;
}
.sidebar__nav-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;margin-bottom:2px;border-radius:7px;
  font-family:'JetBrains Mono',monospace;font-size:.8rem;color:var(--gray);
  border-left:2px solid transparent;
  transition:background .25s,color .25s,border-color .25s;
  position:relative;
}
.sidebar__nav-link .dot{
  width:6px;height:6px;border-radius:50%;background:var(--gray-dim);flex-shrink:0;
  transition:background .25s,box-shadow .25s;
}
.sidebar__nav-link .ext{color:var(--gray-dim);}
.sidebar__nav-link:hover{background:var(--panel-light);color:var(--white);}
.sidebar__nav-link.is-active{
  background:var(--panel-light);color:var(--white);border-left-color:var(--red);
}
.sidebar__nav-link.is-active .dot{background:var(--red);box-shadow:0 0 8px var(--red-glow);}

.sidebar__footer{padding:16px 22px 22px;border-top:1px solid var(--border);}
.sidebar__social{display:flex;gap:10px;margin-bottom:14px;}
.sidebar__social a{
  width:34px;height:34px;border:1px solid var(--border);border-radius:8px;
  display:flex;align-items:center;justify-content:center;color:var(--gray);
  transition:all .25s var(--ease);font-size:.85rem;
}
.sidebar__social a:hover{border-color:var(--red);color:var(--red);transform:translateY(-3px);}
.sidebar__status{
  font-family:'JetBrains Mono',monospace;font-size:.66rem;color:var(--gray-dim);
  display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--border);padding-top:12px;
}
.sidebar__status .live{color:var(--red);}
.sidebar__status .live::before{
  content:'';display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--red);margin-right:5px;box-shadow:0 0 6px var(--red-glow);
  animation:pulse 1.8s infinite;
}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}

/* ==========================================================================
   MOBILE / TABLET NAVBAR
   ========================================================================== */
.mobile-nav{
  position:fixed;top:0;left:0;right:0;height:var(--navbar-h);
  background:rgba(5,5,6,.85);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  z-index:1100;display:none;
  align-items:center;
}
.mobile-nav__logo{font-family:'JetBrains Mono',monospace;font-weight:700;color:var(--red);}
.mobile-nav__logo span{color:var(--white);}
.mobile-nav .navbar-toggler{border:1px solid var(--border);padding:7px 10px;}
.mobile-nav .navbar-toggler:focus{box-shadow:none;}
.mobile-nav .navbar-toggler-icon{
  width:20px;height:16px;position:relative;background:none;
}
.mobile-nav__offcanvas{
  background:var(--panel);width:min(320px,84vw);border-left:1px solid var(--border);
}
.mobile-nav__offcanvas .sidebar__meta,
.mobile-nav__offcanvas .sidebar__nav,
.mobile-nav__offcanvas .sidebar__footer,
.mobile-nav__offcanvas .sidebar__profile{padding-left:22px;padding-right:22px;}

/* ==========================================================================
   MAIN LAYOUT
   ========================================================================== */
.main{margin-left:var(--sidebar-w);position:relative;}
section{padding:120px 0;position:relative;}
.section-alt{background:var(--black-soft);}

.eyebrow{
  font-family:'JetBrains Mono',monospace;font-size:.82rem;color:var(--gray-dim);
  margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.eyebrow .slash{color:var(--red);}
.section-title{
  font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:18px;
}
.section-title .accent{color:var(--red);}
.section-lede{color:var(--gray);max-width:560px;margin-bottom:56px;font-weight:300;}

.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.is-visible{opacity:1;transform:translateY(0);}
.reveal-scale{opacity:0;transform:scale(.92);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal-scale.is-visible{opacity:1;transform:scale(1);}
.reveal-left{opacity:0;transform:translateX(-46px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal-left.is-visible{opacity:1;transform:translateX(0);}
.reveal-right{opacity:0;transform:translateX(46px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal-right.is-visible{opacity:1;transform:translateX(0);}
[data-stagger] .reveal{transition-delay:calc(var(--i,0) * 90ms);}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  padding-top:160px;padding-bottom:100px;
  overflow:hidden;
}
#matrix-canvas{
  position:absolute;inset:0;width:100%;height:100%;
  opacity:.16;pointer-events:none;z-index:0;
}
.hero__glow{
  position:absolute;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,var(--red-deep) 0%,transparent 70%);
  opacity:.22;top:-160px;right:-160px;pointer-events:none;filter:blur(10px);
  z-index:0;
}
.hero__content{position:relative;z-index:2;}
.hero__greet{
  font-family:'JetBrains Mono',monospace;color:var(--red);font-size:.95rem;margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.hero__greet::before{content:'';width:26px;height:1px;background:var(--red);}
.hero__title{
  font-size:clamp(2.4rem,5.4vw,4.4rem);line-height:1.08;margin-bottom:22px;
}
.hero__title .line2{color:var(--gray-dim);}
.hero__desc{color:var(--gray);max-width:480px;margin-bottom:34px;font-size:1.02rem;}
.hero__cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px;}

.btn-neon{
  font-family:'JetBrains Mono',monospace;font-size:.85rem;
  padding:13px 28px;border-radius:8px;border:1px solid var(--red);
  background:var(--red);color:#0a0a0a;font-weight:600;
  transition:all .3s var(--ease);display:inline-flex;align-items:center;gap:8px;
}
.btn-neon:hover{background:transparent;color:var(--red);box-shadow:0 0 24px var(--red-glow);transform:translateY(-2px);}
.btn-ghost{
  font-family:'JetBrains Mono',monospace;font-size:.85rem;
  padding:13px 28px;border-radius:8px;border:1px solid var(--border);
  background:transparent;color:var(--white);
  transition:all .3s var(--ease);display:inline-flex;align-items:center;gap:8px;
}
.btn-ghost:hover{border-color:var(--white);transform:translateY(-2px);}

.hero__stats{display:flex;gap:40px;flex-wrap:wrap;}
.hero__stat b{
  font-family:'Space Grotesk',sans-serif;font-size:1.7rem;color:var(--white);display:block;
}
.hero__stat span{font-size:.76rem;color:var(--gray-dim);font-family:'JetBrains Mono',monospace;}

.hero__code{
  position:relative;z-index:2;background:var(--panel);
  border:1px solid var(--border);border-radius:12px;
  box-shadow:0 40px 90px -30px rgba(0,0,0,.7);
  transform:perspective(1000px) rotateY(-6deg) rotateX(2deg);
  transition:transform .4s var(--ease);
}
.hero__code:hover{transform:perspective(1000px) rotateY(-2deg) rotateX(0deg);}
.hero__code-bar{
  display:flex;align-items:center;gap:8px;padding:12px 16px;
  border-bottom:1px solid var(--border);background:var(--panel-light);
  border-radius:12px 12px 0 0;
}
.hero__code-body{
  padding:22px 24px;font-family:'JetBrains Mono',monospace;font-size:.84rem;
  min-height:230px;color:var(--gray);
}
.hero__code-body .k{color:var(--white);font-weight:500;}
.hero__code-body .s{color:var(--red);}
.hero__code-body .p{color:var(--white);font-weight:600;}
.hero__code-body .c{color:var(--gray-dim);}
.code-caret{display:inline-block;width:7px;height:15px;background:var(--red);vertical-align:middle;animation:blink 1s step-end infinite;}

.hero__badge{
  position:absolute;display:flex;align-items:center;gap:8px;
  background:var(--panel);border:1px solid var(--border);
  padding:10px 14px;border-radius:10px;font-family:'JetBrains Mono',monospace;
  font-size:.78rem;box-shadow:0 20px 40px -18px rgba(0,0,0,.7);z-index:3;
  will-change:transform;
}
.hero__badge i{color:var(--red);}
.hero__badge--1{top:6%;left:-8%;}
.hero__badge--2{bottom:12%;left:-4%;}
.hero__badge--3{top:48%;right:-10%;}

.hero__scroll{
  position:absolute;bottom:36px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  font-family:'JetBrains Mono',monospace;font-size:.66rem;color:var(--gray-dim);
  z-index:2;
}
.hero__scroll-mouse{
  width:22px;height:36px;border:1px solid var(--border);border-radius:14px;position:relative;
}
.hero__scroll-mouse::before{
  content:'';position:absolute;top:6px;left:50%;width:3px;height:7px;background:var(--red);
  border-radius:2px;transform:translateX(-50%);animation:scrolldown 1.6s infinite;
}
@keyframes scrolldown{0%{opacity:1;top:6px;}100%{opacity:0;top:18px;}}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about__frame{
  position:relative;max-width:400px;
}
.about__frame-img{
  border-radius:14px;overflow:hidden;border:1px solid var(--border);
  transform:perspective(1200px) rotateY(4deg);
  transition:transform .5s var(--ease);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.7);
}
.about__frame:hover .about__frame-img{transform:perspective(1200px) rotateY(0deg);}
.about__frame-img img{width:100%;height:460px;object-fit:cover;filter:grayscale(.25) contrast(1.05);}
.about__badge{
  position:absolute;bottom:-22px;right:-22px;
  background:var(--panel);border:1px solid var(--border);
  padding:16px 20px;border-radius:12px;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.8);
  font-family:'JetBrains Mono',monospace;text-align:center;
}
.about__badge b{display:block;font-family:'Space Grotesk',sans-serif;font-size:1.6rem;color:var(--red);}
.about__badge span{font-size:.66rem;color:var(--gray-dim);}
.about__frame-grid{
  position:absolute;top:-18px;left:-18px;width:100%;height:100%;
  border:1px solid var(--border);border-radius:14px;z-index:-1;
}

.about__info{list-style:none;margin:26px 0 30px;display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.about__info li{font-size:.86rem;color:var(--gray);}
.about__info li b{
  display:block;color:var(--white);font-family:'JetBrains Mono',monospace;font-size:.72rem;
  text-transform:uppercase;letter-spacing:.04em;color:var(--gray-dim);margin-bottom:3px;
}

.stat-row{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--border);margin-top:44px;}
.stat-item{flex:1 1 130px;padding:26px 10px 0;text-align:left;border-right:1px solid var(--border);}
.stat-item:last-child{border-right:none;}
.stat-item b{
  font-family:'Space Grotesk',sans-serif;font-size:2.1rem;color:var(--white);display:block;
}
.stat-item b .plus{color:var(--red);}
.stat-item span{font-family:'JetBrains Mono',monospace;font-size:.7rem;color:var(--gray-dim);}

/* ==========================================================================
   3D ROTATING TECH CUBE (pure CSS 3D transforms)
   ========================================================================== */
.cube-stage{
  width:150px;height:150px;margin:0 auto;perspective:900px;
}
.cube{
  width:100%;height:100%;position:relative;
  transform-style:preserve-3d;
  animation:spinCube 16s linear infinite;
}
.cube:hover{animation-play-state:paused;}
.cube__face{
  position:absolute;width:150px;height:150px;
  background:var(--panel);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:2.4rem;color:var(--red);border-radius:10px;
  box-shadow:inset 0 0 40px rgba(255,45,63,.06);
}
.cube__face--front{transform:translateZ(75px);}
.cube__face--back{transform:rotateY(180deg) translateZ(75px);}
.cube__face--right{transform:rotateY(90deg) translateZ(75px);}
.cube__face--left{transform:rotateY(-90deg) translateZ(75px);}
.cube__face--top{transform:rotateX(90deg) translateZ(75px);}
.cube__face--bottom{transform:rotateX(-90deg) translateZ(75px);}
@keyframes spinCube{
  from{transform:rotateX(0) rotateY(0);}
  to{transform:rotateX(360deg) rotateY(360deg);}
}

/* ==========================================================================
   SKILLS
   ========================================================================== */
.skills-tabs{display:flex;gap:10px;margin-bottom:44px;flex-wrap:wrap;}
.skills-tab{
  font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--gray);
  background:var(--panel);border:1px solid var(--border);padding:10px 18px;border-radius:8px;
  cursor:pointer;transition:all .25s var(--ease);
}
.skills-tab.is-active{color:var(--black);background:var(--red);border-color:var(--red);}
.skills-tab:hover:not(.is-active){border-color:var(--red);color:var(--white);}

.skill-card{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;
  padding:22px;height:100%;transition:transform .3s var(--ease),border-color .3s;
}
.skill-card:hover{border-color:rgba(255,45,63,.4);}
.skill-card__top{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.skill-card__icon{
  width:42px;height:42px;border-radius:10px;background:var(--panel-light);
  display:flex;align-items:center;justify-content:center;color:var(--red);font-size:1.15rem;flex-shrink:0;
}
.skill-card__name{font-family:'Space Grotesk',sans-serif;font-size:.95rem;}
.skill-card__pct{margin-left:auto;font-family:'JetBrains Mono',monospace;color:var(--gray-dim);font-size:.78rem;}
.skill-bar{height:5px;border-radius:6px;background:var(--panel-light);overflow:hidden;}
.skill-bar__fill{
  height:100%;width:0%;border-radius:6px;
  background:linear-gradient(90deg,var(--red-deep),var(--red));
  transition:width 1.2s var(--ease);
}
.skills-grid[data-hidden] .skill-card{display:none;}

/* ==========================================================================
   SERVICES — 3D flip cards
   ========================================================================== */
.flip-card{height:230px;perspective:1200px;}
.flip-card__inner{
  position:relative;width:100%;height:100%;transition:transform .6s var(--ease);
  transform-style:preserve-3d;
}
.flip-card:hover .flip-card__inner{transform:rotateY(180deg);}
.flip-card__face{
  position:absolute;inset:0;backface-visibility:hidden;border-radius:14px;
  border:1px solid var(--border);padding:26px;display:flex;flex-direction:column;
}
.flip-card__front{background:var(--panel);justify-content:space-between;}
.flip-card__back{
  background:linear-gradient(150deg,var(--red-deep),#3a0509);
  transform:rotateY(180deg);justify-content:center;color:#fff;
}
.flip-card__icon{
  width:52px;height:52px;border-radius:12px;background:var(--panel-light);
  display:flex;align-items:center;justify-content:center;color:var(--red);font-size:1.4rem;
}
.flip-card__front h4{font-size:1.05rem;}
.flip-card__front .num{
  font-family:'JetBrains Mono',monospace;color:var(--gray-dim);font-size:.72rem;
}
.flip-card__back p{font-size:.85rem;line-height:1.6;opacity:.95;}
.flip-card__back span{font-family:'JetBrains Mono',monospace;font-size:.7rem;opacity:.7;margin-top:10px;display:block;}

/* ==========================================================================
   PROJECTS
   ========================================================================== */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:44px;}
.filter-btn{
  font-family:'JetBrains Mono',monospace;font-size:.78rem;color:var(--gray);
  background:transparent;border:1px solid var(--border);padding:9px 17px;border-radius:20px;
  cursor:pointer;transition:all .25s var(--ease);
}
.filter-btn.is-active{background:var(--red);color:#0a0a0a;border-color:var(--red);}
.filter-btn:hover:not(.is-active){border-color:var(--red);color:var(--white);}

.project-card{
  border-radius:14px;overflow:hidden;background:var(--panel);
  border:1px solid var(--border);transition:transform .15s linear,border-color .3s;
  height:100%;
}
.project-card:hover{border-color:rgba(255,45,63,.35);}
.project-card__browser{
  display:flex;align-items:center;gap:6px;padding:9px 12px;background:var(--panel-light);
}
.project-card__browser span{width:8px;height:8px;border-radius:50%;background:var(--gray-dim);}
.project-card__media{position:relative;overflow:hidden;height:220px;}
.project-card__media img{
  width:100%;height:100%;object-fit:cover;filter:grayscale(.55) brightness(.75);
  transition:transform .6s var(--ease),filter .5s var(--ease);
}
.project-card:hover .project-card__media img{transform:scale(1.08);filter:grayscale(0) brightness(.9);}
.project-card__overlay{
  position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,5,6,.92) 100%);
  display:flex;align-items:flex-end;padding:18px;opacity:0;transition:opacity .35s var(--ease);
}
.project-card:hover .project-card__overlay{opacity:1;}
.project-card__links{display:flex;gap:10px;}
.project-card__links a{
  width:38px;height:38px;border-radius:50%;background:var(--red);color:#0a0a0a;
  display:flex;align-items:center;justify-content:center;transition:transform .25s var(--ease);
}
.project-card__links a:hover{transform:translateY(-4px) scale(1.05);}
.project-card__body{padding:22px;}
.project-card__cat{font-family:'JetBrains Mono',monospace;font-size:.68rem;color:var(--red);margin-bottom:8px;display:block;}
.project-card__title{font-size:1.08rem;margin-bottom:8px;}
.project-card__desc{font-size:.83rem;color:var(--gray);margin-bottom:16px;}
.project-card__tags{display:flex;gap:7px;flex-wrap:wrap;}
.project-card__tags span{
  font-family:'JetBrains Mono',monospace;font-size:.66rem;color:var(--gray);
  border:1px solid var(--border);padding:3px 9px;border-radius:20px;
}
.project-col{display:none;}
.project-col.is-shown{display:block;}

/* ==========================================================================
   EXPERIENCE TIMELINE
   ========================================================================== */
.timeline{position:relative;max-width:820px;margin:0 auto;}
.timeline::before{
  content:'';position:absolute;left:50%;top:0;bottom:0;width:1px;
  background:var(--border);transform:translateX(-50%);
}
.timeline-item{
  position:relative;width:50%;padding:0 46px 60px;
}
.timeline-item:nth-child(odd){left:0;text-align:right;}
.timeline-item:nth-child(even){left:50%;text-align:left;}
.timeline-item__dot{
  position:absolute;top:2px;width:13px;height:13px;border-radius:50%;
  background:var(--black);border:2px solid var(--red);box-shadow:0 0 0 5px var(--black-soft);
}
.timeline-item:nth-child(odd) .timeline-item__dot{right:-7px;}
.timeline-item:nth-child(even) .timeline-item__dot{left:-7px;}
.timeline-item__date{font-family:'JetBrains Mono',monospace;color:var(--red);font-size:.74rem;margin-bottom:6px;display:block;}
.timeline-item__card{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px 24px;
  display:inline-block;transition:border-color .3s,transform .3s var(--ease);text-align:left;
}
.timeline-item__card:hover{border-color:rgba(255,45,63,.35);transform:translateY(-3px);}
.timeline-item__role{font-size:1.02rem;margin-bottom:2px;}
.timeline-item__org{font-family:'JetBrains Mono',monospace;font-size:.76rem;color:var(--gray-dim);margin-bottom:10px;display:block;}
.timeline-item__desc{font-size:.85rem;color:var(--gray);}

/* ==========================================================================
   TESTIMONIALS
   ========================================================================== */
.testi-card{
  background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px;height:100%;
}
.testi-card i.bi-quote{color:var(--red);font-size:1.6rem;}
.testi-card p{color:var(--gray);font-size:.92rem;margin:16px 0 22px;}
.testi-card__who{display:flex;align-items:center;gap:12px;}
.testi-card__who img{width:44px;height:44px;border-radius:50%;object-fit:cover;}
.testi-card__who b{display:block;font-size:.88rem;}
.testi-card__who span{font-family:'JetBrains Mono',monospace;font-size:.68rem;color:var(--gray-dim);}
#testimonial-carousel .carousel-indicators [data-bs-target]{background:var(--red);}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-card{
  display:flex;gap:16px;align-items:flex-start;padding:22px;
  background:var(--panel);border:1px solid var(--border);border-radius:12px;margin-bottom:16px;
  transition:border-color .3s;
}
.contact-card:hover{border-color:rgba(255,45,63,.35);}
.contact-card__icon{
  width:46px;height:46px;border-radius:10px;background:var(--panel-light);
  display:flex;align-items:center;justify-content:center;color:var(--red);flex-shrink:0;
}
.contact-card b{display:block;font-size:.72rem;font-family:'JetBrains Mono',monospace;color:var(--gray-dim);margin-bottom:4px;text-transform:uppercase;letter-spacing:.04em;}
.contact-card span,.contact-card a{font-size:.92rem;color:var(--white);}

.form-control-dark{
  background:var(--panel);border:1px solid var(--border);color:var(--white);
  padding:13px 16px;border-radius:8px;font-family:'IBM Plex Sans',sans-serif;font-size:.9rem;
}
.form-control-dark:focus{
  background:var(--panel);border-color:var(--red);color:var(--white);
  box-shadow:0 0 0 3px rgba(255,45,63,.15);
}
.form-control-dark::placeholder{color:var(--gray-dim);}
label.form-label-dark{font-family:'JetBrains Mono',monospace;font-size:.72rem;color:var(--gray-dim);margin-bottom:6px;display:block;}

/* ==========================================================================
   FOOTER + BACK TO TOP
   ========================================================================== */
.site-footer{
  border-top:1px solid var(--border);padding:30px 0;
  display:flex;justify-content:space-around;align-items:center;flex-wrap:wrap;gap:12px;
}
.site-footer p{font-size:.8rem;color:var(--gray-dim);}
.site-footer .mono{color:var(--red);}

#back-to-top{
  position:fixed;bottom:28px;right:28px;width:48px;height:48px;border-radius:50%;
  background:var(--red);color:#0a0a0a;border:none;display:flex;align-items:center;justify-content:center;
  z-index:900;opacity:0;visibility:hidden;transform:translateY(14px);
  transition:all .3s var(--ease);box-shadow:0 12px 30px -8px rgba(255,45,63,.5);
}
#back-to-top.is-shown{opacity:1;visibility:visible;transform:translateY(0);}
#back-to-top:hover{background:var(--white);}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:991.98px){
  .sidebar{display:none;}
  .mobile-nav{display:flex;}
  .main{margin-left:0;padding-top:var(--navbar-h);}
  .hero{padding-top:80px;}
  .timeline::before{left:18px;}
  .timeline-item,.timeline-item:nth-child(odd),.timeline-item:nth-child(even){
    width:100%;left:0;text-align:left;padding:0 0 40px 46px;
  }
  .timeline-item:nth-child(odd) .timeline-item__dot,
  .timeline-item:nth-child(even) .timeline-item__dot{left:12px;right:auto;}
  .about__badge{right:8px;bottom:-18px;}
  .hero__badge{display:none;}
}
@media (max-width:575.98px){
  section{padding:80px 0;}
  .about__info{grid-template-columns:1fr 1fr;}
  .stat-item{flex:1 1 45%;}
  #preloader{padding:16px;}
  .terminal{width:100%;}
  .terminal__body{padding:16px 16px 18px;font-size:.74rem;min-height:0;}
  .terminal__title{font-size:.64rem;}
  .terminal__percent{font-size:.74rem;min-width:34px;}
}
@media (max-height:520px){
  #preloader{padding:14px; margin:5px;}
  .terminal__body{padding:14px 18px 16px;min-height:0;}
  .terminal__line{margin-bottom:5px;}
  .terminal__progress-row{margin-top:8px;}
}
@media (hover:none){
  .cursor-dot,.cursor-ring{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
}