/* ============================================================
   MASTERMIND SYNDICATE — Gunmetal Minimalist
   ============================================================ */

:root {
  /* --- Type Scale --- */
  --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.9375rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.1rem + 1.1vw, 2rem);
  --text-2xl: clamp(1.75rem, 1rem + 2.2vw, 3rem);
  --text-3xl: clamp(2.25rem, 0.8rem + 3.5vw, 4.25rem);

  /* --- Spacing --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* --- Radius --- */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;

  /* --- Motion --- */
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* --- Fonts --- */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
}

/* === DARK (default) === */
:root,
[data-theme='dark'] {
  --bg: #111316;
  --bg-raised: #181b1f;
  --bg-card: #1c2024;
  --border: #2a2e34;
  --border-subtle: #222529;
  --text-primary: #eff0f3;
  --text-secondary: #9ea4ad;
  --text-tertiary: #6b7280;
  --accent: #9ca3ae;
  --accent-dim: rgba(156, 163, 174, 0.08);
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
}

/* === LIGHT === */
[data-theme='light'] {
  --bg: #f2f3f5;
  --bg-raised: #ffffff;
  --bg-card: #ffffff;
  --border: #d0d3d9;
  --border-subtle: #e0e2e6;
  --text-primary: #111318;
  --text-secondary: #3d4350;
  --text-tertiary: #646b78;
  --accent: #3d4350;
  --accent-dim: rgba(61, 67, 80, 0.06);
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f2f3f5;
    --bg-raised: #ffffff;
    --bg-card: #ffffff;
    --border: #d0d3d9;
    --border-subtle: #e0e2e6;
    --text-primary: #111318;
    --text-secondary: #3d4350;
    --text-tertiary: #646b78;
    --accent: #3d4350;
    --accent-dim: rgba(61, 67, 80, 0.06);
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
  }
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: clamp(var(--space-16), 7vw, var(--space-24));
}

/* ============================================================
   HEADER
   ============================================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--bg) l c h / 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

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

.header__logo-mark {
  width: 28px;
  height: 28px;
  color: var(--text-secondary);
}

.header__logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.3;
  color: var(--text-primary);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav a {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.header__nav a:hover { color: var(--text-primary); }

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--accent-dim);
}

.mobile-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .header__nav { display: none; }
  .mobile-toggle { display: flex; }
  .header__nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-6);
    gap: var(--space-4);
  }
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero__content {
  max-width: 720px;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-6);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.hero__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  font-weight: 500;
  max-width: 480px;
  line-height: 1.65;
  margin-bottom: var(--space-10);
}

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

/* Subtle decorative line on the right */
.hero__line {
  position: absolute;
  right: 10%;
  top: 20%;
  width: 1px;
  height: 200px;
  background: linear-gradient(to bottom, transparent, var(--border), transparent);
  opacity: 0.5;
}

.hero__line-2 {
  position: absolute;
  right: 14%;
  top: 35%;
  width: 1px;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--border), transparent);
  opacity: 0.3;
}

@media (max-width: 768px) {
  .hero__line, .hero__line-2 { display: none; }
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.btn--primary {
  background: var(--text-primary);
  color: var(--bg);
}
.btn--primary:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); }

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

/* ============================================================
   DIVIDER
   ============================================================ */

.divider {
  border: 0;
  height: 1px;
  background: var(--border-subtle);
  margin: 0;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.section-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  max-width: 480px;
  line-height: 1.65;
}

.section-header {
  margin-bottom: clamp(var(--space-10), 4vw, var(--space-16));
}

/* ============================================================
   STATS
   ============================================================ */

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  padding-block: clamp(var(--space-10), 4vw, var(--space-16));
}

@media (max-width: 640px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

.stat { text-align: center; }

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
  letter-spacing: -0.02em;
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================================================
   SERVICES
   ============================================================ */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

@media (max-width: 768px) {
  .services-grid { grid-template-columns: 1fr; }
}

.service-cell {
  padding: var(--space-8) var(--space-6);
  background: var(--bg-card);
  transition: background var(--transition);
}
.service-cell:hover {
  background: var(--bg-raised);
}

.service-cell__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}

.service-cell__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.service-cell__desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.6;
}

/* ============================================================
   ABOUT — SPLIT
   ============================================================ */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}

@media (max-width: 768px) {
  .split { grid-template-columns: 1fr; }
}

/* Terminal */
.terminal {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}

.terminal__body {
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.9;
  color: var(--text-tertiary);
  min-height: 280px;
}

.terminal__line--prompt { color: var(--text-secondary); }
.terminal__line--output { color: var(--text-secondary); }
.terminal__line--ok { color: #6b9e6b; }
.terminal__line--warn { color: #b89e5a; }

/* Capabilities */
.cap-list {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.cap-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

.cap-item::before {
  content: '—';
  color: var(--text-tertiary);
  flex-shrink: 0;
}

/* ============================================================
   APPROACH
   ============================================================ */

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .process-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .process-list { grid-template-columns: 1fr; }
}

.process-item {}

.process-item__num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.process-item__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.process-item__desc {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ============================================================
   CONTACT
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-form {
  display: grid;
  gap: var(--space-4);
}

.form-group label {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-sm);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--text-tertiary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-info {
  display: grid;
  gap: var(--space-6);
}

.contact-info__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.contact-info__label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-info__value {
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.contact-info__value a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition);
}
.contact-info__value a:hover { color: var(--text-secondary); }

/* Form footer & status */
.form-footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.form-status {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  transition: color var(--transition);
}
.form-status--ok { color: #6b9e6b; }
.form-status--error { color: #b86a6a; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-8);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__links a {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--text-secondary); }

/* ============================================================
   SCROLL ANIMATION (subtle)
   ============================================================ */

.fade-in { opacity: 1; }

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}
@keyframes reveal { to { opacity: 1; } }