/* ============================================================
   SAIKUMAR KANCHUPARTHI — PREMIUM PORTFOLIO STYLES
   ============================================================
   - 8px spacing scale
   - CSS custom properties for light/dark themes
   - Space Grotesk (headings) + Inter (body)
   - 3 responsive breakpoints
   ============================================================ */

/* ---------- THEME TOKENS ---------- */
:root {
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

  /* palette */
  --color-primary: #0b63d6;
  --color-primary-dark: #094fa8;
  --color-primary-soft: rgba(11, 99, 214, 0.10);
  --color-secondary: #00bfa6;
  --color-secondary-dark: #009e89;
  --color-secondary-soft: rgba(0, 191, 166, 0.10);

  --gray-50: #f9fafb;
  --gray-100: #f7f8fa;
  --gray-200: #eef0f3;
  --gray-300: #e2e8f0;
  --gray-400: #cbd5e1;
  --gray-500: #94a3b8;
  --gray-600: #64748b;
  --gray-700: #475569;
  --gray-800: #334155;
  --gray-900: #1e293b;

  /* theme surfaces (light) */
  --bg: #ffffff;
  --bg-alt: var(--gray-100);
  --bg-card: #ffffff;
  --bg-sunken: var(--gray-50);
  --text: var(--gray-900);
  --text-soft: var(--gray-700);
  --text-muted: var(--gray-600);
  --border: var(--gray-200);
  --on-accent: #ffffff;

  /* shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10), 0 4px 8px rgba(15, 23, 42, 0.04);
  --shadow-primary: 0 8px 24px rgba(11, 99, 214, 0.30);

  --nav-bg: rgba(255, 255, 255, 0.85);

  /* radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --nav-h: 72px;
}

/* Dark theme overrides — shared layout via variables */
[data-theme="dark"] {
  --bg: #0b1120;
  --bg-alt: #111a2c;
  --bg-card: #16213a;
  --bg-sunken: #0d1526;
  --text: #e2e8f0;
  --text-soft: #cbd5e1;
  --text-muted: #94a3b8;
  --border: #24324d;
  --nav-bg: rgba(11, 17, 32, 0.85);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
  --shadow-primary: 0 8px 24px rgba(11, 99, 214, 0.45);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: var(--color-primary); color: #fff; }

/* ---------- UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--color-primary); }

.section { padding: 100px 0; }

.section__tag {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition),
              background-color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px) scale(1.02); }

.btn--primary {
  background: var(--color-primary);
  color: var(--on-accent);
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: var(--shadow-primary);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.8rem;
}
.btn--ghost:hover { color: var(--text); border-color: var(--text-muted); }

.btn--sm { padding: 9px 20px; font-size: 0.85rem; }
.btn--full { width: 100%; }

/* ---------- FADE-IN (Intersection Observer) ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}
.brand-dot { color: var(--color-secondary); }

.navbar__links { display: flex; gap: 32px; }

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 100%;
  height: 2px;
  border-radius: 1px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left bottom;
  transition: transform var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--text); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.navbar__actions { display: flex; align-items: center; gap: 16px; }

/* Theme toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition), border-color var(--transition);
}
.theme-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }
.theme-toggle .icon { width: 20px; height: 20px; }
.icon--sun { display: none; }
.icon--moon { display: block; }

[data-theme="dark"] .icon--sun { display: block; }
[data-theme="dark"] .icon--moon { display: none; }

/* Mobile toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  z-index: 1001;
}
.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.navbar__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle.open span:nth-child(2) { opacity: 0; }
.navbar__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 64px;
  overflow: hidden;
}

/* gradient glow behind hero */
.hero__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 400px at 12% 20%, var(--color-primary-soft), transparent 60%),
    radial-gradient(600px 400px at 88% 80%, var(--color-secondary-soft), transparent 60%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero__tagline {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.hero__subline {
  font-size: 1.1rem;
  color: var(--text-soft);
  margin-bottom: 20px;
}
.hero__sep { color: var(--color-secondary); margin: 0 8px; }

.hero__desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 460px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero__visual { display: flex; justify-content: center; }

.hero__avatar {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.avatar-ring {
  width: 232px;
  height: 232px;
  border-radius: 50%;
  padding: 6px;
  background: conic-gradient(from 0deg, var(--color-primary), var(--color-secondary), var(--color-primary));
  box-shadow: var(--shadow-lg);
  animation: spin-slow 12s linear infinite;
}
[data-theme="dark"] .avatar-ring { box-shadow: 0 20px 60px rgba(11, 99, 214, 0.4); }

.avatar-core {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: spin-slow-reverse 12s linear infinite;
}
.avatar-initials {
  font-family: var(--font-display);
  font-size: 3.4rem;
  font-weight: 700;
  color: var(--color-primary);
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}
@keyframes spin-slow-reverse {
  to { transform: rotate(-360deg); }
}

.hero__stats-card {
  display: flex;
  gap: 28px;
  background: var(--bg-card);
  padding: 16px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.stat-item { display: flex; flex-direction: column; align-items: center; }
.stat-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}
.stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }

/* ============================================================
   ABOUT
   ============================================================ */
.about { background: var(--bg); }

.about__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}

.about__text p { margin-bottom: 16px; color: var(--text-muted); line-height: 1.7; }

.about__strengths h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text);
}

.about__strengths ul { display: flex; flex-direction: column; gap: 8px; }
.about__strengths li {
  padding-left: 20px;
  position: relative;
  color: var(--text-muted);
}
.about__strengths li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card--large {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card--large:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-card__number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
  line-height: 1.1;
}
.stat-card__label { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; }

/* ============================================================
   SERVICES
   ============================================================ */
.services { background: var(--bg-alt); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #fff;
}
.service-card__icon svg { width: 26px; height: 26px; }

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}
.service-card__desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   SKILLS
   ============================================================ */
.skills { background: var(--bg); }

.skills__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 48px;
  margin-bottom: 40px;
}

.skill-item__header { display: flex; justify-content: space-between; margin-bottom: 8px; }
.skill-item__name { font-size: 0.9rem; font-weight: 600; }
.skill-item__pct {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
}

.skill-bar {
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--bg-alt);
  overflow: hidden;
}
.skill-bar__fill {
  height: 100%;
  width: 0;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-bar__fill.animate { width: var(--target-width); }

.skills__chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 8px 18px;
  background: var(--bg-alt);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
}
.chip:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects { background: var(--bg-alt); }

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.project-card__thumb {
  height: 160px;
  overflow: hidden;
}
.project-card__thumb svg { width: 100%; height: 100%; }
.thumb--blue   { --thumb-accent: #0b63d6; }
.thumb--teal   { --thumb-accent: #00bfa6; }
.thumb--amber  { --thumb-accent: #f59e0b; }
.thumb--pink   { --thumb-accent: #ec4899; }
.thumb--violet { --thumb-accent: #7c3aed; }
.thumb--slate  { --thumb-accent: #64748b; }

.project-card__body { padding: 24px; }

.project-card__role {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}
.project-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.project-card__desc { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.6; }

.project-card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.project-card__tags span {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: var(--bg-alt);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-weight: 500;
}

.project-card__result { display: flex; gap: 12px; flex-wrap: wrap; }
.result-metric {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-secondary-dark);
  background: var(--color-secondary-soft);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* ============================================================
   CASE STUDIES
   ============================================================ */
.case-studies { background: var(--bg); }

.cases__grid { display: flex; flex-direction: column; gap: 32px; }

.case-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.case-card__header { padding: 32px 36px; color: #fff; }
.header--blue   { background: linear-gradient(135deg, #0b63d6, #00bfa6); }
.header--teal   { background: linear-gradient(135deg, #00bfa6, #0b63d6); }
.header--violet { background: linear-gradient(135deg, #7c3aed, #ec4899); }

.case-card__tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  background: rgba(255, 255, 255, 0.2);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}
.case-card__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.3;
}

.case-card__body { padding: 36px; }

.case-card__section { margin-bottom: 24px; }
.case-card__section:last-child { margin-bottom: 0; }

.case-card__section h4 {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--color-primary);
  margin-bottom: 10px;
}
.case-card__section p { color: var(--text-muted); line-height: 1.7; }

.case-card__section ul { display: flex; flex-direction: column; gap: 8px; }
.case-card__section li {
  padding-left: 20px;
  position: relative;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.case-card__section li::before {
  content: '';
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-secondary);
}

.case-card__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.metric {
  text-align: center;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  padding: 20px 16px;
}
.metric__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
  line-height: 1.2;
}
.metric__label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials { background: var(--bg-alt); }

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.testimonial-card__stars { color: #f59e0b; font-size: 1.1rem; margin-bottom: 16px; letter-spacing: 2px; }

.testimonial-card blockquote {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.7;
  margin-bottom: 24px;
  flex: 1;
  font-style: italic;
}

.testimonial-card__author { display: flex; align-items: center; gap: 12px; }
.testimonial-card__avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.testimonial-card__name { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.testimonial-card__role { font-size: 0.8rem; color: var(--text-muted); }

/* ============================================================
   BLOG
   ============================================================ */
.blog { background: var(--bg); }

.blog__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.blog-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.blog-card__meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.blog-card__meta time { font-size: 0.8rem; color: var(--text-muted); }
.blog-card__cat {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.blog-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
  color: var(--text);
}
.blog-card__excerpt { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 16px; line-height: 1.6; }
.blog-card__link { font-size: 0.9rem; font-weight: 600; color: var(--color-primary); transition: color var(--transition); }
.blog-card__link:hover { color: var(--color-primary-dark); }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--bg-alt); }

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact__info p { color: var(--text-muted); margin-bottom: 28px; line-height: 1.7; }

.contact__details { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }

.contact__detail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-soft);
  transition: color var(--transition);
}
a.contact__detail-item:hover { color: var(--color-primary); }
.contact__detail-item svg {
  width: 22px; height: 22px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact__socials { display: flex; gap: 12px; }

.social-link {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition);
}
.social-link svg { width: 20px; height: 20px; }
.social-link:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

/* Form */
.contact__form {
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-success {
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--color-secondary-soft);
  border: 1px solid rgba(0, 191, 166, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-secondary-dark);
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--text);
  color: #cbd5e1;
  padding-top: 60px;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand .navbar__brand { color: #fff; }
.footer__brand p { margin-top: 12px; font-size: 0.9rem; line-height: 1.6; max-width: 300px; color: #94a3b8; }

.footer__links h4,
.footer__newsletter h4 { color: #fff; font-size: 0.95rem; font-weight: 600; margin-bottom: 16px; }

.footer__links ul { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: 0.9rem; transition: color var(--transition); }
.footer__links a:hover { color: var(--color-secondary); }

.footer__newsletter p { font-size: 0.9rem; margin-bottom: 16px; color: #94a3b8; }

.newsletter-form { display: flex; gap: 8px; }
.newsletter-form input {
  flex: 1;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
}
.newsletter-form input:focus { border-color: var(--color-secondary); }
.newsletter-form input::placeholder { color: #94a3b8; }

.footer__bottom { padding: 20px 0; }
.footer__bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer__bottom p { font-size: 0.8rem; color: #94a3b8; }
.footer__bottom-actions { display: flex; align-items: center; gap: 16px; }
.footer__contact-link { font-size: 0.85rem; color: #cbd5e1; transition: color var(--transition); }
.footer__contact-link:hover { color: var(--color-secondary); }

/* ============================================================
   RESPONSIVE — TABLET (<= 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }
  .hero__desc { margin: 0 auto 32px; }
  .hero__actions { justify-content: center; }
  .hero__visual { order: -1; }

  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .skills__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .testimonials__grid { grid-template-columns: 1fr; }
  .blog__grid { grid-template-columns: 1fr; }
  .contact__grid { grid-template-columns: 1fr; gap: 40px; }
  .case-card__metrics { grid-template-columns: repeat(3, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

/* ============================================================
   RESPONSIVE — MOBILE (<= 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root { --nav-h: 64px; }
  .section { padding: 64px 0; }

  /* Nav */
  .navbar__links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-card);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
    z-index: 1000;
  }
  .navbar__links.open { right: 0; }
  .navbar__toggle { display: flex; }
  .navbar__cta { display: none; }

  /* Hero */
  .hero { min-height: auto; padding: calc(var(--nav-h) + 40px) 0 48px; }
  .hero__title { font-size: 2.1rem; }
  .avatar-ring { width: 170px; height: 170px; }
  .avatar-initials { font-size: 2.4rem; }
  .hero__stats-card { padding: 12px 20px; gap: 16px; }
  .stat-number { font-size: 1.2rem; }
  .hero__actions { flex-direction: column; width: 100%; }
  .hero__actions .btn { width: 100%; }

  /* Sections */
  .services__grid { grid-template-columns: 1fr; }
  .about__stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .case-card__metrics { grid-template-columns: 1fr; gap: 12px; }
  .case-card__header { padding: 24px; }
  .case-card__body { padding: 24px; }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .newsletter-form { flex-direction: column; }
  .footer__bottom-actions { flex-direction: column; align-items: flex-start; }
}