/* ============================================================
   SEAN'S PORTFOLIO — Global Master Stylesheet
   Design System: Samsung Galaxy S24 Ultra / One UI Dark Mode
   Author: Sean | Built: July 2026
   ============================================================ */

/* ── 0. GOOGLE FONTS IMPORT ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── 1. CUSTOM TOKEN VARIABLES ── */
:root {
  /* Core Palette */
  --color-canvas:          #000000;  /* Pure OLED True Black */
  --color-surface:         #121212;  /* Elevated charcoal card surface */
  --color-surface-raised:  #1A1A1A;  /* Hover-elevated surface */
  --color-border:          #2C2C2E;  /* Container border */
  --color-border-subtle:   #1E1E20;  /* Very subtle dividers */

  /* Accent */
  --color-accent:          #3E91FF;  /* Samsung desaturated blue */
  --color-accent-hover:    #5CA8FF;  /* Lighter accent on hover */
  --color-accent-muted:    rgba(62, 145, 255, 0.12); /* Glow fill */
  --color-accent-glow:     rgba(62, 145, 255, 0.25);

  /* Typography */
  --color-text-primary:    #E5E5E7;  /* Crisp off-white */
  --color-text-secondary:  #A1A1A6;  /* Muted slate gray */
  --color-text-tertiary:   #6C6C72;  /* Dimmed labels */
  --color-text-inverse:    #000000;

  /* Status Colors */
  --color-success:         #30D158;
  --color-warning:         #FFD60A;
  --color-error:           #FF453A;
  --color-info:            #3E91FF;

  /* Navigation / Glassmorphic */
  --nav-bg:                rgba(18, 18, 18, 0.80);
  --nav-blur:              blur(20px);
  --nav-border:            rgba(255, 255, 255, 0.06);

  /* Spacing Scale (8px base) */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Border Radius */
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-pill: 9999px;

  /* Typography Scale */
  --font-family:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-size-xs:   11px;
  --font-size-sm:   13px;
  --font-size-base: 15px;
  --font-size-md:   17px;
  --font-size-lg:   20px;
  --font-size-xl:   24px;
  --font-size-2xl:  30px;
  --font-size-3xl:  38px;
  --font-size-4xl:  48px;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.6), 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md:   0 4px 12px rgba(0,0,0,0.7), 0 2px 6px rgba(0,0,0,0.5);
  --shadow-lg:   0 8px 24px rgba(0,0,0,0.8), 0 4px 12px rgba(0,0,0,0.6);
  --shadow-accent: 0 0 20px rgba(62, 145, 255, 0.20);

  /* Layout */
  --content-max-width: 1120px;
  --nav-height:        64px;
}

/* ── 2. GLOBAL RESET & BASE ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* ── 3. LAYOUT UTILITIES ── */
.container {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-16) 0;
}

.section--sm {
  padding: var(--space-10) 0;
}

.section--lg {
  padding: var(--space-24) 0;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.text-center { text-align: center; }
.text-secondary { color: var(--color-text-secondary); }
.text-accent { color: var(--color-accent); }

/* ── 4. GLASSMORPHIC NAVIGATION ── */
.nav {
  position: sticky;
  top: var(--space-3);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  pointer-events: none;
}

.nav__pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--content-max-width);
  padding: var(--space-3) var(--space-5);
  background: var(--nav-bg);
  backdrop-filter: var(--nav-blur);
  -webkit-backdrop-filter: var(--nav-blur);
  border: 1px solid var(--nav-border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.03);
  pointer-events: all;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.nav__logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent), #6B5BFF);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-sm);
  color: #fff;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.nav__brand-text {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.3px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  position: relative;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav__link.active {
  color: var(--color-accent);
  background: var(--color-accent-muted);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

.nav__cta {
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: var(--color-text-inverse) !important;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.nav__cta:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
  color: var(--color-text-inverse) !important;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* Mobile nav drawer */
.nav__mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.95);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav__mobile.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-link {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__mobile-link:hover,
.nav__mobile-link.active {
  color: var(--color-accent);
}

.nav__mobile-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-xl);
  cursor: pointer;
  line-height: 1;
}

/* ── 5. CARD COMPONENTS ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base), background var(--transition-base);
}

.card:hover {
  border-color: rgba(62, 145, 255, 0.30);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  transform: translateY(-2px);
  background: var(--color-surface-raised);
}

.card--flat {
  transition: none;
}

.card--flat:hover {
  transform: none;
}

.card__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--color-accent-muted);
  color: var(--color-accent);
  border: 1px solid rgba(62, 145, 255, 0.20);
  margin-bottom: var(--space-3);
}

.card__tag--success {
  background: rgba(48, 209, 88, 0.10);
  color: var(--color-success);
  border-color: rgba(48, 209, 88, 0.20);
}

.card__tag--warning {
  background: rgba(255, 214, 10, 0.10);
  color: var(--color-warning);
  border-color: rgba(255, 214, 10, 0.20);
}

.card__date {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  line-height: 1.3;
  letter-spacing: -0.3px;
}

.card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

.card__meta-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ── 6. HERO SECTION ── */
.hero {
  padding: var(--space-20) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(62, 145, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-muted);
  border: 1px solid rgba(62, 145, 255, 0.25);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.hero__eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero__heading {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: var(--space-5);
  max-width: 780px;
}

.hero__heading .accent {
  background: linear-gradient(135deg, var(--color-accent), #8B7BFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ── 7. BUTTON SYSTEM ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  letter-spacing: 0.1px;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 2px 12px rgba(62, 145, 255, 0.30);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 20px rgba(62, 145, 255, 0.45);
  transform: translateY(-1px);
  color: #fff;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.15);
  color: var(--color-text-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  padding: var(--space-2) var(--space-3);
}

.btn--ghost:hover {
  background: var(--color-accent-muted);
  color: var(--color-accent-hover);
}

.btn--sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
}

/* ── 8. BADGE / STATUS PILL ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.badge--live {
  color: var(--color-success);
  background: rgba(48, 209, 88, 0.10);
}

.badge--draft {
  color: var(--color-warning);
  background: rgba(255, 214, 10, 0.10);
}

.badge--coming {
  color: var(--color-text-secondary);
  background: rgba(161, 161, 166, 0.10);
}

/* ── 9. SECTION HEADERS ── */
.section-header {
  margin-bottom: var(--space-10);
}

.section-header__eyebrow {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.section-header__title {
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-3xl));
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: var(--space-3);
}

.section-header__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 560px;
}

/* ── 10. DIVIDER ── */
.divider {
  height: 1px;
  background: var(--color-border-subtle);
  border: none;
  margin: var(--space-10) 0;
}

/* ── 11. STAT BLOCKS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  text-align: center;
}

.stat-card__value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-card__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* ── 12. BLOG FEED ── */
.blog-feed {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: center;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base), background var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  border-color: rgba(62, 145, 255, 0.30);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  transform: translateY(-2px);
  background: var(--color-surface-raised);
}

.blog-card__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.blog-card__number {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.blog-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
}

.blog-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

.blog-card__arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent-muted);
  border: 1px solid rgba(62, 145, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.blog-card:hover .blog-card__arrow {
  background: var(--color-accent);
  color: #fff;
  transform: translateX(3px);
}

/* ── 13. TOOLS GRID ── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), #8B7BFF);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.tool-card:hover {
  border-color: rgba(62, 145, 255, 0.30);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  transform: translateY(-3px);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-muted);
  border: 1px solid rgba(62, 145, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.tool-card__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  letter-spacing: -0.2px;
}

.tool-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
  flex: 1;
}

.tool-card__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

/* Expandable Tool Panel */
.tool-panel {
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-top: var(--space-4);
  display: none;
}

.tool-panel.open {
  display: block;
  animation: slideDown 0.25s ease;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── 14. FORM ELEMENTS ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  letter-spacing: 0.2px;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-tertiary);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23A1A1A6' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: var(--space-10);
}

/* ── 15. PROJECTS GRID ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-5);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.project-card:hover {
  border-color: rgba(62, 145, 255, 0.30);
  box-shadow: var(--shadow-md), var(--shadow-accent);
  transform: translateY(-3px);
}

.project-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-card__icon {
  font-size: 28px;
}

.project-card__links {
  display: flex;
  gap: var(--space-2);
}

.project-card__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.project-card__link:hover {
  background: var(--color-accent-muted);
  border-color: rgba(62, 145, 255, 0.30);
  color: var(--color-accent);
}

.project-card__title {
  font-size: var(--font-size-md);
  font-weight: 700;
  letter-spacing: -0.2px;
}

.project-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.project-card__tag {
  padding: 3px var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

/* ── 16. PROGRESS BAR ── */
.progress-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), #8B7BFF);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 17. TOAST NOTIFICATION ── */
.toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  transition: transform var(--transition-base);
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ── 18. FOOTER ── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: var(--space-16);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent), #6B5BFF);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-xs);
  color: #fff;
}

.footer__brand-name {
  font-weight: 700;
  color: var(--color-text-primary);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 300px;
}

.footer__col-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-subtle);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--color-accent-muted);
  border-color: rgba(62, 145, 255, 0.30);
  color: var(--color-accent);
}

/* ── 19. CONTACT PAGE ── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-10);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-info__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-muted);
  border: 1px solid rgba(62, 145, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-info__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-info__value {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── 20. PAGE TRANSITIONS ── */
.page-fade {
  animation: pageFadeIn 0.4s ease;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── 21. SCROLL PROGRESS BAR ── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), #8B7BFF);
  z-index: 2000;
  width: 0%;
  transition: width 0.1s linear;
}

/* ── 22. SKELETON LOADING ── */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-surface-raised) 50%, var(--color-surface) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── 23. RESPONSIVE BREAKPOINTS ── */
@media (max-width: 768px) {
  :root {
    --space-16: 48px;
    --space-20: 60px;
    --space-24: 72px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .nav__links {
    display: none;
  }

  .nav__cta {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .hero {
    padding: var(--space-12) 0 var(--space-10);
  }

  .blog-card {
    grid-template-columns: 1fr;
  }

  .blog-card__arrow {
    width: 36px;
    height: 36px;
    align-self: flex-start;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero__heading {
    letter-spacing: -0.8px;
  }

  .section-header__title {
    letter-spacing: -0.5px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .nav__pill {
    padding: var(--space-2) var(--space-4);
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .blog-card {
    padding: var(--space-4);
  }

  .tool-card {
    padding: var(--space-4);
  }

  .project-card {
    padding: var(--space-4);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ── 24. FOCUS / ACCESSIBILITY ── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ── 25. SELECTION COLOR ── */
::selection {
  background: rgba(62, 145, 255, 0.30);
  color: var(--color-text-primary);
}

/* ── 26. SCROLLBAR STYLING ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-canvas);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.15);
}