/* ============================================
   TostyDevs - Professional Website Stylesheet
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-bg: #060611;
  --color-bg-alt: #0c0c1d;
  --color-bg-card: rgba(15, 15, 35, 0.6);
  --color-bg-card-solid: #0f0f23;
  --color-bg-card-hover: rgba(20, 20, 45, 0.8);
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 255, 255, 0.12);
  --color-border-accent: rgba(99, 102, 241, 0.3);
  --color-text: #eaeaf0;
  --color-text-muted: #9494b0;
  --color-text-dim: #5e5e7a;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-gradient-start: #6366f1;
  --color-gradient-mid: #8b5cf6;
  --color-gradient-end: #a855f7;
  --color-success: #22c55e;
  --color-error: #ef4444;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-size-base: 0.95rem;
  --font-size-lg: 1rem;
  --font-size-xl: 1.05rem;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.2);
  --shadow-card-hover: 0 8px 32px rgba(0,0,0,0.4), 0 0 0 1px rgba(99,102,241,0.1);
  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.08);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1280px;
  --navbar-height: 68px;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  /* Fluid root font-size: scales ALL rem-based text with viewport width
     360px  → 14px    |  768px  → 15px   |  1280px → 16.2px
     1440px → 16.6px  |  1920px → 17.8px |  2560px → 19.4px  */
  font-size: clamp(14px, 13px + 0.25vw, 20px);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  overflow-x: hidden;
}

body.loading { overflow: hidden; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
input, textarea { font-family: inherit; font-size: inherit; }
::selection { background: rgba(99, 102, 241, 0.3); color: #fff; }

/* ---------- Utilities ---------- */
.container { width: 90%; max-width: var(--container-max); margin: 0 auto; padding: 0; }
.text-accent { color: var(--color-accent-light); }
.text-gradient {
  background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-mid), var(--color-gradient-end));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

.section { padding: clamp(80px, 12vw, 140px) 0; position: relative; }

.section__header { text-align: center; margin-bottom: clamp(48px, 7vw, 80px); }

.section__tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 50px;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  color: var(--color-accent-light);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.section__title {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px;
  font-size: 0.88rem; font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  box-shadow: 0 2px 12px rgba(99, 102, 241, 0.25), inset 0 1px 0 rgba(255,255,255,0.1);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(99, 102, 241, 0.35), inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn--outline {
  background: transparent; color: var(--color-text);
  border: 1px solid var(--color-border-hover);
}
.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: rgba(99, 102, 241, 0.04);
  transform: translateY(-2px);
}

.btn--ghost {
  color: var(--color-text-muted);
  font-weight: 500;
}
.btn--ghost:hover { color: var(--color-accent-light); }

.btn--small {
  padding: 9px 20px; font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.95); color: #0a0a15;
  border-radius: var(--radius-sm); font-weight: 600;
}
.btn--small:hover { background: #fff; transform: translateY(-2px); }

.btn--lg { padding: 14px 36px; font-size: 0.92rem; }
.btn--full { width: 100%; }

/* ---------- Scroll Animations ---------- */
.animate-on-scroll {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   PRELOADER
   ============================================ */
.preloader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--color-bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
.preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader__inner { text-align: center; }
.preloader__logo {
  margin-bottom: 24px;
  animation: preloader-pulse 1.5s ease-in-out infinite;
}
.preloader__logo .navbar__logo-icon { font-size: 1.4rem; padding: 10px 14px; }
.preloader__bar {
  width: 160px; height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 10px; overflow: hidden;
}
.preloader__fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gradient-end));
  border-radius: 10px;
  animation: preloader-fill 1.8s ease-out forwards;
}
@keyframes preloader-pulse { 0%,100%{opacity:1} 50%{opacity:0.5} }
@keyframes preloader-fill { to{width:100%} }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--navbar-height);
  display: flex; align-items: center;
  transition: all var(--transition-base);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(6, 6, 17, 0.8);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
}
.navbar__inner { display: flex; align-items: center; justify-content: space-between; }

.navbar__logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 800; z-index: 1001; }
.navbar__logo-icon {
  font-family: var(--font-mono); font-size: 0.85rem; padding: 5px 8px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gradient-end));
  border-radius: 8px; color: #fff; line-height: 1;
}

.navbar__links { display: flex; align-items: center; gap: 4px; }
.navbar__link {
  padding: 8px 16px; font-size: 0.88rem; font-weight: 500;
  color: var(--color-text-muted); border-radius: var(--radius-sm);
  transition: all var(--transition-fast); position: relative;
}
.navbar__link:hover { color: var(--color-text); }
.navbar__link.active { color: var(--color-text); }
.navbar__link.active::after {
  content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gradient-end));
  border-radius: 2px;
}
.navbar__link--cta {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff !important; padding: 8px 20px; margin-left: 8px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}
.navbar__link--cta::after { display: none !important; }
.navbar__link--cta:hover { box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3); transform: translateY(-1px); }

.navbar__toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; z-index: 1001; }
.navbar__toggle span { width: 22px; height: 2px; background: var(--color-text); transition: all var(--transition-base); border-radius: 2px; }
.navbar__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar__toggle.active span:nth-child(2) { opacity: 0; }
.navbar__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh; min-height: 100dvh;
  display: flex; align-items: center;
  position: relative; overflow: hidden; padding-top: var(--navbar-height);
}

.hero__bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 20%, transparent 70%);
}

.hero__orb {
  position: absolute; border-radius: 50%; pointer-events: none;
  filter: blur(80px); opacity: 0.5;
}
.hero__orb--1 {
  width: clamp(250px, 40vw, 500px); height: clamp(250px, 40vw, 500px);
  top: -15%; right: -8%;
  background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 70%);
  animation: orb-float 15s ease-in-out infinite;
}
.hero__orb--2 {
  width: clamp(200px, 32vw, 400px); height: clamp(200px, 32vw, 400px);
  bottom: -10%; left: -5%;
  background: radial-gradient(circle, rgba(168,85,247,0.1) 0%, transparent 70%);
  animation: orb-float 20s ease-in-out infinite reverse;
}
.hero__orb--3 {
  width: clamp(150px, 24vw, 300px); height: clamp(150px, 24vw, 300px);
  top: 40%; left: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%);
  animation: orb-float 18s ease-in-out infinite 5s;
}
@keyframes orb-float {
  0%,100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

.hero__inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 60px); align-items: center;
  position: relative; z-index: 1; padding: clamp(20px, 4vw, 40px) 0;
}

.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px;
  background: rgba(34, 197, 94, 0.06);
  border: 1px solid rgba(34, 197, 94, 0.15);
  border-radius: 50px; font-size: 0.78rem; font-weight: 500;
  color: var(--color-success); margin-bottom: 24px;
}
.hero__badge-dot {
  width: 8px; height: 8px; background: var(--color-success);
  border-radius: 50%; animation: pulse-dot 2s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(34,197,94,0.4);
}
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.8)} }

.hero__title {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 800; line-height: 1.12;
  margin-bottom: 20px; letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: var(--font-size-xl); color: var(--color-text-muted);
  margin-bottom: 40px; max-width: 560px; line-height: 1.8;
}

.hero__actions { display: flex; gap: 14px; margin-bottom: clamp(32px, 4vw, 52px); flex-wrap: wrap; }

.hero__stats { display: flex; align-items: center; gap: 0; }
.hero__stat { display: flex; flex-direction: column; }
.hero__stat-number { font-size: 2rem; font-weight: 800; line-height: 1; letter-spacing: -0.02em; }
.hero__stat-label { font-size: 0.78rem; color: var(--color-text-dim); margin-top: 6px; font-weight: 500; }
.hero__stat-divider {
  width: 1px; height: 40px; background: var(--color-border); margin: 0 32px;
}

/* Code Window */
.hero__code-window {
  background: rgba(12, 12, 28, 0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.code-window__header {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--color-border);
}
.code-window__dots { display: flex; gap: 7px; }
.code-window__dot { width: 11px; height: 11px; border-radius: 50%; }
.code-window__dot--red { background: #ff5f57; }
.code-window__dot--yellow { background: #febc2e; }
.code-window__dot--green { background: #28c840; }
.code-window__tabs { display: flex; gap: 0; margin-left: auto; }
.code-window__tab {
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--color-text-muted); padding: 4px 14px;
  border-bottom: 2px solid transparent;
}
.code-window__tab.active { color: var(--color-text); border-color: var(--color-accent); }

.code-window__body {
  padding: clamp(14px, 2vw, 20px); font-family: var(--font-mono);
  font-size: clamp(0.68rem, 1.2vw, 0.82rem); line-height: 1.85;
  display: flex; gap: clamp(12px, 1.5vw, 20px); min-height: clamp(200px, 30vw, 280px);
}
.code-window__lines {
  display: flex; flex-direction: column;
  color: var(--color-text-dim); user-select: none;
  text-align: right; font-size: 0.78rem; line-height: 1.85;
  opacity: 0.5;
}
.code-window__body pre { margin: 0; flex: 1; overflow-x: auto; }
.code-window__status {
  display: flex; gap: 20px; padding: 6px 16px;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--color-text-dim);
  border-top: 1px solid var(--color-border);
  background: rgba(255,255,255,0.01);
}

.code-keyword { color: #c678dd; }
.code-var { color: #e06c75; }
.code-prop { color: #e5c07b; }
.code-string { color: #98c379; }
.code-number { color: #d19a66; }
.code-func { color: #61afef; }
.code-param { color: #e06c75; }
.code-comment { color: #5c6370; font-style: italic; }
.code-cursor {
  display: inline-block; width: 2px; height: 1.1em;
  background: var(--color-accent-light); vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero__scroll-indicator {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--color-text-dim); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.5px;
}
.hero__scroll-mouse {
  width: 22px; height: 34px; border: 2px solid var(--color-text-dim);
  border-radius: 12px; position: relative; opacity: 0.5;
}
.hero__scroll-wheel {
  width: 3px; height: 7px; background: var(--color-text-dim);
  border-radius: 3px; position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  animation: scroll-wheel 2s ease-in-out infinite;
}
@keyframes scroll-wheel { 0%{transform:translateX(-50%) translateY(0);opacity:1} 100%{transform:translateX(-50%) translateY(12px);opacity:0} }

/* ============================================
   TECH STRIP
   ============================================ */
.tech-strip {
  padding: clamp(24px, 4vw, 40px) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: rgba(12, 12, 28, 0.5);
  overflow: hidden;
}
.tech-strip__label {
  text-align: center; font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--color-text-dim); margin-bottom: 24px;
}
.tech-strip__logos { overflow: hidden; position: relative; }
.tech-strip__logos::before,
.tech-strip__logos::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 100px; z-index: 2;
  pointer-events: none;
}
.tech-strip__logos::before { left: 0; background: linear-gradient(90deg, var(--color-bg), transparent); }
.tech-strip__logos::after { right: 0; background: linear-gradient(270deg, var(--color-bg), transparent); }

.tech-strip__track {
  display: flex; gap: 48px; align-items: center;
  animation: marquee 30s linear infinite;
  width: max-content;
}
.tech-strip__item {
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 600;
  color: var(--color-text-dim); white-space: nowrap;
  transition: color var(--transition-fast);
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  border-radius: 50px;
}
@keyframes marquee { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* ============================================
   ABOUT
   ============================================ */
.about { background: var(--color-bg-alt); }
.about__grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: clamp(32px, 6vw, 72px); align-items: center; }
.about__heading { font-size: 1.4rem; font-weight: 700; margin-bottom: 20px; line-height: 1.3; letter-spacing: -0.01em; }
.about__text { color: var(--color-text-muted); margin-bottom: 18px; line-height: 1.8; font-size: var(--font-size-lg); }
.about__values { display: flex; flex-direction: column; gap: 20px; margin-top: 36px; }
.about__value { display: flex; gap: 16px; align-items: flex-start; }
.about__value-icon {
  flex-shrink: 0; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-md); color: var(--color-accent-light);
}
.about__value h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.about__value p { font-size: 0.85rem; color: var(--color-text-muted); line-height: 1.6; }
.about__image-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; }
.about__image-placeholder {
  aspect-ratio: 4 / 3; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 16px;
  background: var(--color-bg-card-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-dim); font-size: 0.85rem;
  position: relative; overflow: hidden;
}
.about__image-placeholder::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.05) 0%, transparent 50%, rgba(168,85,247,0.05) 100%);
}

/* ============================================
   SERVICES
   ============================================ */
.services__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 20px; }

.service-card {
  position: relative; padding: 36px 32px;
  background: var(--color-bg-card);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0; transition: opacity var(--transition-base);
}
.service-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.service-card:hover::before { opacity: 1; }

.service-card__number {
  position: absolute; top: 20px; right: 20px;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 700;
  color: rgba(99, 102, 241, 0.15);
  letter-spacing: 1px;
}
.service-card__icon {
  width: 52px; height: 52px; display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-accent-light); margin-bottom: 20px;
}
.service-card__title { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; letter-spacing: -0.01em; }
.service-card__desc { color: var(--color-text-muted); font-size: 0.92rem; line-height: 1.65; margin-bottom: 20px; }
.service-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.service-card__tags li {
  padding: 5px 14px; font-size: 0.8rem; font-weight: 500;
  color: var(--color-text-dim);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: 50px;
}

/* ============================================
   PROCESS
   ============================================ */
.process { background: var(--color-bg-alt); }
.process__timeline { position: relative; max-width: 760px; margin: 0 auto; }
.process__line {
  position: absolute; left: 28px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-gradient-end), transparent);
  opacity: 0.2;
}
.process__step {
  display: flex; gap: 28px; align-items: flex-start;
  margin-bottom: 48px; position: relative;
}
.process__step:last-child { margin-bottom: 0; }
.process__step-marker {
  flex-shrink: 0; width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-card-solid);
  border: 2px solid var(--color-accent);
  border-radius: 50%; z-index: 1;
  box-shadow: 0 0 20px rgba(99,102,241,0.15);
}
.process__step-marker span {
  font-family: var(--font-mono); font-size: 1rem; font-weight: 800;
  color: var(--color-accent-light);
}
.process__step-content { padding-top: 8px; }
.process__step-content h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.process__step-content p { color: var(--color-text-muted); font-size: 0.92rem; line-height: 1.7; }

/* ============================================
   PROJECTS
   ============================================ */
.projects__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 20px; }
.project-card {
  background: var(--color-bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all var(--transition-base);
}
.project-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.project-card__image { position: relative; overflow: hidden; }
.project-card__placeholder {
  aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center;
  transition: transform var(--transition-slow);
}
.project-card:hover .project-card__placeholder { transform: scale(1.05); }
.project-card__overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.55); backdrop-filter: blur(4px);
  opacity: 0; transition: opacity var(--transition-base);
}
.project-card:hover .project-card__overlay { opacity: 1; }
.project-card__info { padding: 24px; }
.project-card__category {
  display: inline-block; font-size: 0.78rem; font-weight: 600;
  color: var(--color-accent-light); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px;
}
.project-card__title { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.project-card__desc { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.65; margin-bottom: 14px; }
.project-card__tech { display: flex; flex-wrap: wrap; gap: 8px; }
.project-card__tech span {
  padding: 4px 12px; font-size: 0.78rem; font-weight: 500;
  color: var(--color-text-dim);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: 50px;
}

/* ============================================
   HAPPY CLIENTS
   ============================================ */
.clients { background: var(--color-bg-alt); }
.clients__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 20px; }

.client-card {
  position: relative; padding: 36px 32px;
  background: var(--color-bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  display: flex; flex-direction: column;
}
.client-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.client-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.client-card__stars { display: flex; gap: 3px; }
.client-card__quote-icon { color: var(--color-accent); }

.client-card__quote {
  font-size: 0.88rem; color: var(--color-text-muted);
  line-height: 1.7; flex: 1; margin-bottom: 24px;
  font-style: normal;
}

.client-card__author { display: flex; align-items: center; gap: 14px; padding-top: 20px; border-top: 1px solid var(--color-border); }
.client-card__avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.client-card__avatar span { font-size: 0.8rem; font-weight: 700; color: #fff; }
.client-card__name { display: block; font-size: 0.9rem; font-weight: 600; color: var(--color-text); }
.client-card__role { display: block; font-size: 0.78rem; color: var(--color-text-dim); margin-top: 2px; }

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
  position: relative; padding: clamp(60px, 8vw, 100px) 0; overflow: hidden;
}
.cta-banner__bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.06) 0%, rgba(168,85,247,0.04) 50%, rgba(99,102,241,0.06) 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.cta-banner__inner {
  position: relative; text-align: center; z-index: 1;
}
.cta-banner__title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em;
}
.cta-banner__text {
  font-size: var(--font-size-xl); color: var(--color-text-muted);
  max-width: 540px; margin: 0 auto 40px; line-height: 1.8;
}
.cta-banner__actions { display: flex; gap: 16px; justify-content: center; align-items: center; flex-wrap: wrap; }

/* ============================================
   CONTACT
   ============================================ */
.contact__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 5vw, 60px); align-items: start; }
.contact__info-title { font-size: 1.3rem; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.01em; }
.contact__info-text { color: var(--color-text-muted); line-height: 1.8; margin-bottom: 40px; font-size: var(--font-size-lg); }
.contact__details { display: flex; flex-direction: column; gap: 20px; margin-bottom: 36px; }
.contact__detail { display: flex; align-items: center; gap: 16px; }
.contact__detail-icon {
  flex-shrink: 0; width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-md); color: var(--color-accent-light);
}
.contact__detail-label { display: block; font-size: 0.75rem; color: var(--color-text-dim); margin-bottom: 2px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 500; }
.contact__detail-value { font-size: 0.92rem; color: var(--color-text); transition: color var(--transition-fast); }
a.contact__detail-value:hover { color: var(--color-accent-light); }

.contact__socials { display: flex; gap: 10px; }
.contact__social {
  width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md); color: var(--color-text-muted);
  transition: all var(--transition-fast);
}
.contact__social:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: rgba(99, 102, 241, 0.08);
  transform: translateY(-2px);
}

/* Contact Form */
.contact__form {
  padding: 44px; background: var(--color-bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--color-text-muted); margin-bottom: 8px; }
.form-input {
  width: 100%; padding: 12px 16px;
  background: rgba(6, 6, 17, 0.6);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  color: var(--color-text); font-size: 0.92rem;
  transition: all var(--transition-fast); outline: none;
}
.form-input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.08); }
.form-input::placeholder { color: var(--color-text-dim); }
.form-textarea { resize: vertical; min-height: 120px; }

.form-message {
  margin-top: 16px; padding: 14px 18px; border-radius: var(--radius-md);
  font-size: 0.88rem; display: none; font-weight: 500;
}
.form-message.success { display: block; background: rgba(34, 197, 94, 0.08); border: 1px solid rgba(34, 197, 94, 0.15); color: var(--color-success); }
.form-message.error { display: block; background: rgba(239, 68, 68, 0.08); border: 1px solid rgba(239, 68, 68, 0.15); color: var(--color-error); }

/* ============================================
   FOOTER
   ============================================ */
.footer { padding: 72px 0 0; background: var(--color-bg-alt); border-top: 1px solid var(--color-border); }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: clamp(24px, 4vw, 48px); padding-bottom: 48px; }
.footer__brand-text { color: var(--color-text-muted); font-size: 0.88rem; line-height: 1.7; margin-top: 16px; max-width: 280px; }
.footer__col-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 20px; letter-spacing: 0.02em; }
.footer__links { display: flex; flex-direction: column; gap: 12px; }
.footer__links a, .footer__links span { font-size: 0.88rem; color: var(--color-text-muted); transition: color var(--transition-fast); }
.footer__links a:hover { color: var(--color-accent-light); }
.footer__bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 28px 0; border-top: 1px solid var(--color-border);
  font-size: 0.82rem; color: var(--color-text-dim);
}
.footer__bottom-links { display: flex; gap: 24px; }
.footer__bottom-links a { color: var(--color-text-dim); transition: color var(--transition-fast); }
.footer__bottom-links a:hover { color: var(--color-text); }

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 99;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-card-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all var(--transition-base);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* --- Tablet landscape / small desktop --- */
@media (max-width: 1024px) {
  .container { width: 92%; }
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__subtitle { margin: 0 auto 32px; max-width: 90%; }
  .hero__actions { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__visual { max-width: 480px; margin: 0 auto; }
  .about__grid { grid-template-columns: 1fr; }
  .about__image { order: -1; max-width: 420px; margin: 0 auto; }
  .about__content { max-width: 640px; margin: 0 auto; }
  .contact__grid { grid-template-columns: 1fr; }
  .contact__info { max-width: 540px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

/* --- Tablet portrait --- */
@media (max-width: 768px) {
  :root { --navbar-height: 64px; }
  .container { width: 94%; }

  .navbar__toggle { display: flex; }
  .navbar__links {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    flex-direction: column; justify-content: center; align-items: center; gap: 12px;
    background: rgba(6, 6, 17, 0.98);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    transform: translateX(100%); transition: transform var(--transition-base);
  }
  .navbar__links.open { transform: translateX(0); }
  .navbar__link { font-size: 1.05rem; padding: 12px 24px; }
  .navbar__link.active::after { display: none; }
  .navbar__link--cta { margin-left: 0; margin-top: 8px; }

  .hero__scroll-indicator { display: none; }
  .hero__stats { flex-direction: column; gap: 16px; align-items: center; }
  .hero__stat { align-items: center; }
  .hero__stat-divider { width: 40px; height: 1px; margin: 0; }

  .process__step { gap: 20px; }
  .process__step-marker { width: 48px; height: 48px; }
  .process__line { left: 23px; }

  .tech-strip__track { gap: 24px; }
  .tech-strip__item { padding: 6px 14px; font-size: 0.8rem; }

  .form-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 16px; text-align: center; }
}

/* --- Mobile --- */
@media (max-width: 480px) {
  .container { width: 92%; }

  .hero__badge { font-size: 0.8rem; padding: 6px 14px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn:not(.btn--ghost):not(.contact__social) { width: 100%; justify-content: center; }

  .about__image { max-width: 100%; }
  .about__values { gap: 16px; }

  .service-card { padding: 24px 20px; }
  .service-card__number { top: 16px; right: 16px; }

  .process__step { gap: 16px; margin-bottom: 32px; }
  .process__step-marker { width: 42px; height: 42px; }
  .process__step-marker span { font-size: 0.85rem; }
  .process__line { left: 20px; }
  .process__step-content h3 { font-size: 0.95rem; }
  .process__step-content p { font-size: 0.85rem; }

  .project-card__info { padding: 20px; }
  .client-card { padding: 24px 20px; }

  .contact__form { padding: 24px 20px; }

  .cta-banner__actions { flex-direction: column; align-items: stretch; }

  .code-window__lines { display: none; }

  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}

/* --- Very small screens --- */
@media (max-width: 360px) {
  .container { width: 94%; }
  .navbar__logo-text { font-size: 1.15rem; }
  .contact__detail { gap: 12px; }
  .contact__detail-icon { width: 40px; height: 40px; }
}

/* --- Large desktop --- */
@media (min-width: 1440px) {
  :root { --container-max: 1400px; }
  .container { width: 88%; }
}

@media (min-width: 1600px) {
  :root { --container-max: 1520px; }
  .container { width: 86%; }
}

@media (min-width: 1920px) {
  :root { --container-max: 1680px; }
  .container { width: 84%; }
  .service-card { padding: 40px 36px; }
  .client-card { padding: 40px 36px; }
  .project-card__info { padding: 28px; }
  .contact__form { padding: 52px; }
}

@media (min-width: 2560px) {
  :root { --container-max: 2100px; }
  .container { width: 82%; }
  .service-card { padding: 48px 44px; }
  .client-card { padding: 48px 44px; }
  .project-card__info { padding: 36px; }
  .contact__form { padding: 60px; }
}

/* --- Height-constrained viewports (landscape phones) --- */
@media (max-height: 600px) and (orientation: landscape) {
  .hero { min-height: auto; padding: calc(var(--navbar-height) + 32px) 0 32px; }
  .hero__stats { flex-direction: row; }
  .hero__stat-divider { width: 1px; height: 32px; margin: 0 20px; }
  .hero__scroll-indicator { display: none; }
  .preloader { display: none; }
}