/* ============================================================================
 * Neuro_Nomad Portfolio — Global styles
 * Companion to tokens.css. All component classes here are reusable.
 * ============================================================================ */

@import url('./tokens.css');

/* -- Reset (modern, minimal) ----------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-page);
  background-image:
    radial-gradient(ellipse at 20% 0%, var(--green-matrix-faint) 0%, transparent 40%),
    radial-gradient(ellipse at 80% 100%, var(--purple-neon-faint) 0%, transparent 40%);
  background-attachment: fixed;
  overflow-x: hidden;
}

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

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: var(--blue-neon-bright);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--blue-neon);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--purple-neon);
  color: var(--white-pure);
}

/* -- Headings ------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--white-pure);
}

h1 { font-size: clamp(var(--text-5xl), 8vw, var(--text-8xl)); }
h2 { font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl)); }
h3 { font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl)); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--text-primary);
  line-height: var(--leading-relaxed);
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* -- Layout primitives ---------------------------------------------------- */

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

@media (min-width: 768px) {
  .container { padding-inline: var(--space-8); }
}

.section {
  padding-block: var(--section-padding-y);
  position: relative;
}

.section-divider {
  height: 80px;
  width: 100%;
  pointer-events: none;
}

/* -- Glassmorphism card --------------------------------------------------- */

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-lg));
  -webkit-backdrop-filter: blur(var(--blur-lg));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
}

.glass-strong {
  background: var(--glass-bg-strong);
  backdrop-filter: blur(var(--blur-xl));
  -webkit-backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--glass-border-bright);
  border-radius: var(--radius-2xl);
}

/* -- Buttons -------------------------------------------------------------- */

.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-weight: var(--weight-semibold);
  font-size: var(--text-base);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--white-pure);
  box-shadow: var(--glow-purple);
}

.btn-primary:hover {
  background: var(--purple-neon-bright);
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--purple-neon-glow);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  color: var(--text-primary);
  border: 1px solid var(--glass-border-bright);
}

.btn-secondary:hover {
  background: var(--glass-bg-strong);
  border-color: var(--accent-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
}

/* -- Badge ---------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  border: 1px solid var(--glass-border);
}

.badge-pulse {
  position: relative;
}

.badge-pulse::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-pill);
  background: inherit;
  animation: pulse 2s ease-in-out infinite;
  z-index: -1;
}

/* -- Terminal (reusable) -------------------------------------------------- */

.terminal {
  background: var(--black-elevated);
  border: 1px solid var(--black-border-bright);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  box-shadow: var(--shadow-2xl);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--black-surface);
  border-bottom: 1px solid var(--black-border);
}

.terminal-dots {
  display: flex;
  gap: var(--space-2);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background: var(--white-faint);
}

.terminal-body {
  padding: var(--space-5);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.terminal-prompt { color: var(--accent-system); }
.terminal-success { color: var(--accent-success); }
.terminal-warning { color: var(--accent-warning); }
.terminal-error { color: var(--accent-error); }
.terminal-info { color: var(--accent-secondary); }
.terminal-muted { color: var(--text-tertiary); }
.terminal-accent { color: var(--accent-primary); }

.cursor {
  display: inline-block;
  width: 0.5em;
  height: 1em;
  background: currentColor;
  margin-left: 0.1em;
  vertical-align: text-bottom;
  animation: blink 1s steps(2, end) infinite;
}

/* -- Animations ----------------------------------------------------------- */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px currentColor; }
  50% { box-shadow: 0 0 40px currentColor; }
}

@keyframes drawLine {
  from { stroke-dashoffset: 1000; }
  to { stroke-dashoffset: 0; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-fade-in { animation: fadeIn var(--duration-slow) var(--ease-out) both; }
.animate-fade-in-up { animation: fadeInUp var(--duration-slow) var(--ease-out) both; }
.animate-float { animation: float 6s ease-in-out infinite; }
.animate-pulse-slow { animation: pulse 3s ease-in-out infinite; }
.animate-glow { animation: glow 3s ease-in-out infinite; }

/* -- Utility -------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.no-wrap { white-space: nowrap; }