/* ==========================================================
   NERUC PRIME - DESIGN SYSTEM v2.0 "Premium 2027"
   Linear / Raycast / Stripe / Vercel tier
   Capa 1: Tokens globales (aplica a TODO nerucprime.com)
   Capa 2: Identidades por pagina (cada una sobreescribe --accent)
   Capa 3: Premium effects (grain, glass, glow, spotlights)
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@300;400;500;600;700&family=Google+Sans+Display:wght@700;800;900&family=DM+Mono:wght@300;400;500&display=swap');

/* ── CAPA 1: TOKENS GLOBALES ── */
:root {
  --font-body:    'Google Sans', 'DM Sans', 'Segoe UI', sans-serif;
  --font-display: 'Google Sans Display', 'Google Sans', sans-serif;
  --font-mono:    'DM Mono', 'Fira Code', 'Courier New', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-2xl:  28px;
  --radius-full: 9999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg:  0 8px 24px rgba(0,0,0,.10), 0 4px 10px rgba(0,0,0,.06);
  --shadow-xl:  0 16px 40px rgba(0,0,0,.12), 0 6px 16px rgba(0,0,0,.07);

  --bg-base:    #f0f4f9;
  --bg-card:    #ffffff;
  --bg-glass:   rgba(255,255,255,0.75);
  --bg-overlay: rgba(0,0,0,0.40);

  --text-primary:   #1f2937;
  --text-secondary: #6b7280;
  --text-muted:     #9ca3af;
  --text-on-accent: #ffffff;

  --border:        rgba(0,0,0,0.08);
  --border-strong: rgba(0,0,0,0.15);

  --transition-fast:   all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   all 0.40s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);

  --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;

  --glass-blur:   blur(20px);
  --glass-border: 1px solid rgba(255,255,255,0.3);

  --accent:        #8b5cf6;
  --accent-light:  #a78bfa;
  --accent-dark:   #7c3aed;
  --accent-bg:     rgba(139, 92, 246, 0.08);
  --accent-border: rgba(139, 92, 246, 0.20);

  /* Premium 2027 dark palette */
  --dark-base:     #050510;
  --dark-elevated: #0a0a1a;
  --dark-surface:  #0f0f24;
  --dark-border:   rgba(255,255,255,0.06);
  --dark-text:     #ffffff;
  --dark-dim:      rgba(255,255,255,0.5);
  --dark-dimmer:   rgba(255,255,255,0.3);
  --dark-glass:    rgba(255,255,255,0.03);
  --dark-glass-hi: rgba(255,255,255,0.06);
  --accent-glow:   rgba(139,92,246,0.15);
  --gold:          #d4a847;
  --success:       #10b981;
}

/* ── CAPA 2: IDENTIDADES POR PAGINA ── */

[data-theme="neruc-prime"] {
  --accent: #8b5cf6; --accent-light: #a78bfa; --accent-dark: #7c3aed;
  --accent-bg: rgba(139,92,246,0.08); --accent-border: rgba(139,92,246,0.20);
}
[data-theme="neruc-one"] {
  --accent: #d4a847; --accent-light: #e2c06e; --accent-dark: #b8922e;
  --accent-bg: rgba(212,168,71,0.08); --accent-border: rgba(212,168,71,0.20);
}
[data-theme="neruc-technologies"] {
  --accent: #1a73e8; --accent-light: #4285f4; --accent-dark: #1558b0;
  --accent-bg: rgba(26,115,232,0.08); --accent-border: rgba(26,115,232,0.20);
}
[data-theme="headhunting"] {
  --accent: #e37400; --accent-light: #f9ab00; --accent-dark: #b35c00;
  --accent-bg: rgba(227,116,0,0.08); --accent-border: rgba(227,116,0,0.20);
}
[data-theme="ecommerce"] {
  --accent: #f43f5e; --accent-light: #fb7185; --accent-dark: #be123c;
  --accent-bg: rgba(244,63,94,0.08); --accent-border: rgba(244,63,94,0.20);
}
[data-theme="hosting"] {
  --accent: #0ea5e9; --accent-light: #38bdf8; --accent-dark: #0369a1;
  --accent-bg: rgba(14,165,233,0.08); --accent-border: rgba(14,165,233,0.20);
}
[data-theme="dominioweb"] {
  --accent: #8b5cf6; --accent-light: #a78bfa; --accent-dark: #6d28d9;
  --accent-bg: rgba(139,92,246,0.08); --accent-border: rgba(139,92,246,0.20);
}
[data-theme="correoselectronicos"] {
  --accent: #3b82f6; --accent-light: #60a5fa; --accent-dark: #1d4ed8;
  --accent-bg: rgba(59,130,246,0.08); --accent-border: rgba(59,130,246,0.20);
}
[data-theme="paidmedia"] {
  --accent: #ef4444; --accent-light: #f87171; --accent-dark: #b91c1c;
  --accent-bg: rgba(239,68,68,0.08); --accent-border: rgba(239,68,68,0.20);
}
[data-theme="webintelligence"] {
  --accent: #06b6d4; --accent-light: #22d3ee; --accent-dark: #0e7490;
  --accent-bg: rgba(6,182,212,0.08); --accent-border: rgba(6,182,212,0.20);
}
[data-theme="suscripciones"] {
  --accent: #14b8a6; --accent-light: #2dd4bf; --accent-dark: #0f766e;
  --accent-bg: rgba(20,184,166,0.08); --accent-border: rgba(20,184,166,0.20);
}

/* ── RESET Y BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body); font-size: var(--text-base);
  color: var(--text-primary); background-color: var(--bg-base);
  line-height: 1.6; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition-fast); }
a:hover { color: inherit; }

/* ── CAPA 3: PREMIUM 2027 EFFECTS ── */

/* Grain overlay — add class to a wrapper div, grain renders as ::before */
.grain-overlay { position: relative; }
.grain-overlay::before {
  content: "";
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  opacity: 0.035;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* Dark glass card — the signature 2027 card */
.glass-card {
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.04),
    0 0 0 0.5px rgba(255,255,255,0.03),
    0 2px 8px rgba(0,0,0,0.3),
    0 8px 32px rgba(0,0,0,0.2);
  transition: var(--transition-base);
}
.glass-card:hover {
  border-color: rgba(255,255,255,0.1);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.06),
    0 0 0 0.5px rgba(255,255,255,0.05),
    0 4px 16px rgba(0,0,0,0.35),
    0 12px 48px rgba(0,0,0,0.25);
  transform: translateY(-2px);
}

/* Elevated card — multi-layer premium shadows */
.elevated-card {
  background: var(--dark-elevated);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xl);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.04),
    0 0 0 1px rgba(0,0,0,0.3),
    0 4px 24px rgba(0,0,0,0.4),
    0 0 80px -20px var(--accent-glow);
  transition: var(--transition-base);
}
.elevated-card:hover {
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.06),
    0 0 0 1px rgba(139,92,246,0.15),
    0 8px 40px rgba(0,0,0,0.5),
    0 0 100px -16px var(--accent-glow);
  transform: translateY(-3px);
}

/* Gradient heading — white fading to dim */
.gradient-heading {
  background: linear-gradient(145deg, #ffffff 30%, rgba(255,255,255,0.4) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

/* Premium button with glow */
.premium-btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 14px 40px; border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: 16px; font-weight: 700;
  background: var(--accent); color: #ffffff; border: none; cursor: pointer;
  transition: var(--transition-spring);
  box-shadow:
    0 0 0 1px rgba(139,92,246,0.3),
    0 4px 16px rgba(139,92,246,0.3),
    0 0 40px -8px rgba(139,92,246,0.25);
}
.premium-btn:hover {
  transform: scale(1.03) translateY(-1px);
  box-shadow:
    0 0 0 1px rgba(139,92,246,0.5),
    0 6px 24px rgba(139,92,246,0.4),
    0 0 60px -4px rgba(139,92,246,0.35);
}

/* Ghost button with glass hover */
.ghost-btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 14px 40px; border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: 16px; font-weight: 600;
  background: transparent; color: #ffffff; cursor: pointer;
  border: 1.5px solid rgba(255,255,255,0.12);
  transition: var(--transition-base);
}
.ghost-btn:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
}

/* Frosted header */
.frosted-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(5,5,16,0.7);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* Hairline divider that fades at edges */
.hairline-divider {
  height: 1px; border: none; max-width: 1200px; margin: 0 auto;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,0.06) 20%,
    rgba(255,255,255,0.06) 80%,
    transparent 100%
  );
}

/* Spotlight background — radial gradient */
.spotlight-bg {
  position: relative;
}
.spotlight-bg::after {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(139,92,246,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 100%, rgba(6,182,212,0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Glow ring — ambient brand halo */
.glow-ring {
  box-shadow:
    0 0 0 1px rgba(139,92,246,0.08),
    0 0 80px -16px rgba(139,92,246,0.2),
    0 0 120px -24px rgba(139,92,246,0.1);
}

/* ── EXISTING COMPONENTS (preserved) ── */

.btn-primary {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--accent); color: var(--text-on-accent); border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  cursor: pointer; transition: var(--transition-spring);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}
.btn-primary:hover {
  background: var(--accent-dark); transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.20); color: var(--text-on-accent);
}

.btn-secondary {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: transparent; color: var(--accent);
  border: 1.5px solid var(--accent-border); border-radius: var(--radius-full);
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 600;
  cursor: pointer; transition: var(--transition-base);
}
.btn-secondary:hover { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }

.card {
  background: var(--bg-card); border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
  transition: var(--transition-base); overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.badge {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--accent-bg); color: var(--accent);
  border: 1px solid var(--accent-border); border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.02em;
}

.glass {
  background: var(--bg-glass);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border); border-radius: var(--radius-xl);
}

.section { padding: var(--space-20) var(--space-8); max-width: 1200px; margin: 0 auto; }
.section-title {
  font-family: var(--font-display); font-size: var(--text-4xl); font-weight: 800;
  color: inherit; line-height: 1.2; letter-spacing: -0.02em;
}
.section-subtitle { font-size: var(--text-lg); color: var(--text-secondary); max-width: 600px; line-height: 1.7; }
.accent { color: var(--accent); }
.divider { height: 1px; background: var(--border); border: none; margin: var(--space-8) 0; }

/* ── UTILITIES ── */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col     { display: flex; flex-direction: column; }
.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-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: var(--space-12) var(--space-4); }
  .section-title { font-size: var(--text-3xl); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .section-title { font-size: var(--text-2xl); }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}