/* ============================================================
   styles.css — Variables globales, reset y utilidades base
   VSolutions Pro
   ============================================================ */

/* ── Google Fonts ya importadas en index.html ── */

/* ── Variables CSS ── */
:root {
  /* Colores principales (extraídos del logo) */
  --cyan:          #4DC8E8;
  --cyan-light:    #6DD5F0;
  --cyan-dark:     #2AADCF;
  --magenta:       #E8326E;
  --magenta-light: #F05A8A;
  --magenta-dark:  #C2185B;

  /* Fondos */
  --bg-base:       #0A0A0F;
  --bg-surface:    #111118;
  --bg-card:       #16161F;
  --bg-card-hover: #1C1C28;
  --border:        rgba(77, 200, 232, 0.12);
  --border-hover:  rgba(77, 200, 232, 0.35);

  /* Texto */
  --text-primary:   #FFFFFF;
  --text-secondary: #B0BEC5;
  --text-muted:     #6B7280;

  /* Tipografía */
  --font-body:    'Inter', sans-serif;
  --font-display: 'Poppins', sans-serif;

  /* Tamaños */
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  2rem;
  --fs-3xl:  2.5rem;
  --fs-4xl:  3.25rem;
  --fs-5xl:  4rem;

  /* Espaciado */
  --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;

  /* Radios */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  /* Sombras / glows */
  --glow-cyan:    0 0 24px rgba(77, 200, 232, 0.30);
  --glow-magenta: 0 0 24px rgba(232, 50, 110, 0.30);
  --shadow-card:  0 4px 32px rgba(0, 0, 0, 0.45);

  /* Transiciones */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-smooth: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Layout */
  --navbar-h:  72px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-h);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: transparent;
}

button {
  cursor: pointer;
}

/* ── Contenedor global ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ── Secciones ── */
.section {
  padding-block: var(--space-24);
}

/* ── Encabezados de sección ── */
.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section__label {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: var(--space-3);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(var(--fs-2xl), 4vw, var(--fs-4xl));
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section__subtitle {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  max-width: 560px;
  margin-inline: auto;
}

/* ── Texto con gradiente ── */
.gradient-text {
  background: linear-gradient(90deg, var(--cyan) 0%, var(--magenta) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Botones ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--fs-base);
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
}

.btn--cyan {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-dark) 100%);
  color: #000;
  box-shadow: 0 0 20px rgba(77, 200, 232, 0.35);
}
.btn--cyan:hover {
  box-shadow: 0 0 36px rgba(77, 200, 232, 0.6);
  transform: translateY(-2px);
}

.btn--magenta {
  background: linear-gradient(135deg, var(--magenta) 0%, var(--magenta-dark) 100%);
  color: #fff;
  box-shadow: 0 0 20px rgba(232, 50, 110, 0.35);
}
.btn--magenta:hover {
  box-shadow: 0 0 36px rgba(232, 50, 110, 0.6);
  transform: translateY(-2px);
}

.btn--outline-magenta {
  background: transparent;
  color: var(--magenta-light);
  border: 2px solid var(--magenta);
  box-shadow: inset 0 0 12px rgba(232, 50, 110, 0.08);
}
.btn--outline-magenta:hover {
  background: rgba(232, 50, 110, 0.12);
  box-shadow: 0 0 28px rgba(232, 50, 110, 0.35);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-sm);
}

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

/* ── Skill pills ── */
.skill-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  background: rgba(77, 200, 232, 0.08);
  border: 1px solid rgba(77, 200, 232, 0.25);
  color: var(--cyan-light);
  transition: all var(--transition-base);
}

.skill-pill:hover {
  background: rgba(77, 200, 232, 0.15);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}

/* ── Tags de proyectos ── */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  background: rgba(77, 200, 232, 0.10);
  border: 1px solid rgba(77, 200, 232, 0.20);
  color: var(--cyan);
}

/* ── Animaciones de scroll ── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Delay escalonado para grids */
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.4s; }

/* ── Scrollbar personalizada ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: var(--cyan-dark);
  border-radius: var(--radius-full);
}

/* ── Selección de texto ── */
::selection {
  background: rgba(77, 200, 232, 0.30);
  color: var(--text-primary);
}

/* ── Responsive base ── */
@media (max-width: 768px) {
  .container {
    padding-inline: var(--space-4);
  }
  .section {
    padding-block: var(--space-16);
  }
}