/* ============================================
   MPK Mini MK3 Playbook - Base Styles
   Reset, typography, and utility classes
   ============================================ */

/* ─────────────────────────────────────────
   CSS RESET
   ───────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-size-adjust: 100%;
  font-size: 16px;
}

body {
  min-height: 100vh;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  overflow-x: hidden;
}

/* Smooth page transitions */
body.is-loading * {
  transition: none !important;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

/* ─────────────────────────────────────────
   TYPOGRAPHY
   ───────────────────────────────────────── */

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

h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-6);
}

h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-5);
}

h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

h4 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

h5 {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-4);
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

strong, b {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

.lead {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  max-width: 650px;
}

.display-text {
  font-size: var(--text-4xl);
  font-weight: var(--font-extrabold);
  letter-spacing: var(--tracking-tighter);
  line-height: 1.05;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Links */
.link {
  color: var(--accent-primary);
  transition: var(--transition-fast);
  position: relative;
}

.link:hover {
  color: var(--accent-primary-bright);
}

.link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--duration-normal) var(--ease-out);
}

.link:hover::after {
  width: 100%;
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-overlay);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  line-height: var(--leading-relaxed);
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

/* ─────────────────────────────────────────
   UTILITY CLASSES
   ───────────────────────────────────────── */

/* Text Colors */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-primary); }
.text-accent-secondary { color: var(--accent-secondary); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Font Weights */
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Font Families */
.font-display { font-family: var(--font-display); }
.font-mono { font-family: var(--font-mono); }

/* Display */
.hidden { display: none !important; }
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Spacing */
.m-0 { margin: 0; }
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* Width/Height */
.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }

/* Visibility */
.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;
}

/* ─────────────────────────────────────────
   ANIMATIONS
   ───────────────────────────────────────── */

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

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(255, 77, 28, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(255, 77, 28, 0.4);
  }
}

.animate-fade-in {
  animation: fadeIn var(--duration-normal) var(--ease-out) both;
}

.animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.animate-pulse {
  animation: pulse 2s var(--ease-default) infinite;
}

/* Stagger animation delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ─────────────────────────────────────────
   SCROLLBAR
   ───────────────────────────────────────── */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-overlay);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--bg-overlay) var(--bg-surface);
}

/* ─────────────────────────────────────────
   SELECTION
   ───────────────────────────────────────── */

::selection {
  background: var(--accent-primary);
  color: var(--color-white);
}

::-moz-selection {
  background: var(--accent-primary);
  color: var(--color-white);
}