/* ============================================================
   TypeNova Design Tokens — Dark Luxury Edu Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  /* ── Core Palette ── */
  --tn-primary:        #4F6BFF;   /* Cobalt Nova */
  --tn-primary-dark:   #3A52E8;
  --tn-primary-light:  #7A91FF;
  --tn-accent:         #00E5C8;   /* Stardust teal */
  --tn-accent-dark:    #00BFA5;
  --tn-warning:        #FFB547;
  --tn-danger:         #FF5C6B;
  --tn-success:        #2EE89A;

  /* ── Background / Surface ── */
  --tn-bg:             #0B1020;   /* Night sky */
  --tn-bg-2:           #0F1628;
  --tn-surface:        #1A2244;   /* Card surface */
  --tn-surface-2:      #1E2A50;
  --tn-surface-3:      #243160;
  --tn-border:         rgba(79, 107, 255, 0.18);
  --tn-border-subtle:  rgba(255, 255, 255, 0.07);

  /* ── Text ── */
  --tn-text:           #E8EEFF;
  --tn-text-sub:       #8B9CC8;
  --tn-text-muted:     #5A6892;
  --tn-text-on-dark:   #FFFFFF;

  /* ── Typography ── */
  --tn-font-heading:   'Outfit', 'Noto Sans JP', sans-serif;
  --tn-font-body:      'Inter', 'Noto Sans JP', sans-serif;
  --tn-font-mono:      'JetBrains Mono', 'Courier New', monospace;

  --tn-text-xs:   clamp(0.7rem,  0.65rem + 0.25vw, 0.8rem);
  --tn-text-sm:   clamp(0.85rem, 0.8rem  + 0.25vw, 0.95rem);
  --tn-text-base: clamp(0.95rem, 0.9rem  + 0.3vw,  1.05rem);
  --tn-text-md:   clamp(1.05rem, 1rem    + 0.3vw,  1.15rem);
  --tn-text-lg:   clamp(1.15rem, 1.05rem + 0.5vw,  1.35rem);
  --tn-text-xl:   clamp(1.3rem,  1.1rem  + 1vw,    1.7rem);
  --tn-text-2xl:  clamp(1.6rem,  1.2rem  + 2vw,    2.4rem);
  --tn-text-3xl:  clamp(2rem,    1.4rem  + 3vw,    3.2rem);
  --tn-text-hero: clamp(2.8rem,  1.8rem  + 5vw,    5.5rem);

  /* ── Spacing ── */
  --tn-space-1:  4px;
  --tn-space-2:  8px;
  --tn-space-3:  12px;
  --tn-space-4:  16px;
  --tn-space-5:  20px;
  --tn-space-6:  24px;
  --tn-space-8:  32px;
  --tn-space-10: 40px;
  --tn-space-12: 48px;
  --tn-space-16: 64px;
  --tn-space-20: 80px;
  --tn-space-24: 96px;
  --tn-space-section: clamp(64px, 5vw + 32px, 120px);

  /* ── Radii ── */
  --tn-radius-sm:   6px;
  --tn-radius-md:   12px;
  --tn-radius-lg:   18px;
  --tn-radius-xl:   24px;
  --tn-radius-full: 9999px;

  /* ── Shadows ── */
  --tn-shadow-sm:    0 1px 4px rgba(0, 0, 0, 0.4);
  --tn-shadow-md:    0 4px 16px rgba(0, 0, 0, 0.5);
  --tn-shadow-lg:    0 12px 40px rgba(0, 0, 0, 0.6);
  --tn-shadow-glow:  0 0 32px rgba(79, 107, 255, 0.35);
  --tn-shadow-teal:  0 0 24px rgba(0, 229, 200, 0.25);

  /* ── Gradients ── */
  --tn-grad-primary:  linear-gradient(135deg, #4F6BFF 0%, #7A91FF 100%);
  --tn-grad-accent:   linear-gradient(135deg, #00E5C8 0%, #4F6BFF 100%);
  --tn-grad-hero:     linear-gradient(160deg, #0B1020 0%, #1A2244 50%, #0B1020 100%);
  --tn-grad-card:     linear-gradient(145deg, #1A2244 0%, #1E2A50 100%);
  --tn-grad-surface:  linear-gradient(180deg, rgba(26,34,68,0.95) 0%, rgba(11,16,32,0.98) 100%);

  /* ── Motion ── */
  --tn-ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --tn-ease-in:    cubic-bezier(0.7, 0, 0.84, 0);
  --tn-ease-inout: cubic-bezier(0.45, 0, 0.55, 1);
  --tn-dur-fast:   120ms;
  --tn-dur-normal: 240ms;
  --tn-dur-slow:   400ms;
  --tn-dur-xslow:  700ms;

  /* ── Z-Index ── */
  --tn-z-base:    1;
  --tn-z-raised:  10;
  --tn-z-overlay: 100;
  --tn-z-modal:   200;
  --tn-z-toast:   300;
  --tn-z-nav:     400;
}

/* ============================================================
   Global Reset & Base
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--tn-font-body);
  font-size: var(--tn-text-base);
  color: var(--tn-text);
  background: var(--tn-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--tn-font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--tn-text-on-dark);
}

a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; height: auto; }
button { cursor: pointer; font-family: inherit; }

/* ============================================================
   Utility Classes
   ============================================================ */

/* Layout */
.tn-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--tn-space-6);
}

.tn-container-wide {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 var(--tn-space-6);
}

/* Buttons */
.tn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--tn-space-2);
  padding: 12px 28px;
  border-radius: var(--tn-radius-md);
  font-family: var(--tn-font-heading);
  font-weight: 600;
  font-size: var(--tn-text-base);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all var(--tn-dur-normal) var(--tn-ease-out);
  white-space: nowrap;
  text-decoration: none;
}

.tn-btn-primary {
  background: var(--tn-grad-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(79, 107, 255, 0.4);
}

.tn-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(79, 107, 255, 0.55);
}

.tn-btn-accent {
  background: var(--tn-accent);
  color: #0B1020;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 229, 200, 0.35);
}

.tn-btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 229, 200, 0.5);
}

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

.tn-btn-ghost:hover {
  border-color: var(--tn-primary);
  color: var(--tn-primary-light);
}

.tn-btn-sm {
  padding: 8px 18px;
  font-size: var(--tn-text-sm);
  border-radius: var(--tn-radius-sm);
}

.tn-btn-lg {
  padding: 16px 40px;
  font-size: var(--tn-text-lg);
  border-radius: var(--tn-radius-lg);
}

/* Card */
.tn-card {
  background: var(--tn-grad-card);
  border: 1px solid var(--tn-border);
  border-radius: var(--tn-radius-lg);
  padding: var(--tn-space-8);
  box-shadow: var(--tn-shadow-md);
  transition: box-shadow var(--tn-dur-normal) var(--tn-ease-out),
              transform var(--tn-dur-normal) var(--tn-ease-out);
}

.tn-card:hover {
  box-shadow: var(--tn-shadow-glow);
  transform: translateY(-3px);
}

.tn-card-featured {
  border-color: var(--tn-primary);
  box-shadow: var(--tn-shadow-glow);
}

/* Badge */
.tn-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--tn-radius-full);
  font-size: var(--tn-text-xs);
  font-weight: 600;
  font-family: var(--tn-font-heading);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tn-badge-primary {
  background: rgba(79, 107, 255, 0.2);
  color: var(--tn-primary-light);
  border: 1px solid rgba(79, 107, 255, 0.3);
}

.tn-badge-accent {
  background: rgba(0, 229, 200, 0.15);
  color: var(--tn-accent);
  border: 1px solid rgba(0, 229, 200, 0.25);
}

.tn-badge-success {
  background: rgba(46, 232, 154, 0.15);
  color: var(--tn-success);
  border: 1px solid rgba(46, 232, 154, 0.25);
}

.tn-badge-warning {
  background: rgba(255, 181, 71, 0.15);
  color: var(--tn-warning);
  border: 1px solid rgba(255, 181, 71, 0.25);
}

/* Form Elements */
.tn-input {
  width: 100%;
  background: rgba(26, 34, 68, 0.8);
  border: 1.5px solid var(--tn-border);
  border-radius: var(--tn-radius-md);
  padding: 12px 16px;
  color: var(--tn-text);
  font-family: var(--tn-font-body);
  font-size: var(--tn-text-base);
  outline: none;
  transition: border-color var(--tn-dur-fast) var(--tn-ease-out),
              box-shadow var(--tn-dur-fast) var(--tn-ease-out);
}

.tn-input:focus {
  border-color: var(--tn-primary);
  box-shadow: 0 0 0 3px rgba(79, 107, 255, 0.2);
}

.tn-input::placeholder {
  color: var(--tn-text-muted);
}

.tn-label {
  display: block;
  font-size: var(--tn-text-sm);
  font-weight: 600;
  color: var(--tn-text-sub);
  margin-bottom: var(--tn-space-2);
  font-family: var(--tn-font-heading);
}

/* Divider */
.tn-divider {
  border: none;
  border-top: 1px solid var(--tn-border-subtle);
  margin: var(--tn-space-8) 0;
}

/* Stat Widget */
.tn-stat {
  display: flex;
  flex-direction: column;
  gap: var(--tn-space-1);
}

.tn-stat-value {
  font-family: var(--tn-font-mono);
  font-size: var(--tn-text-2xl);
  font-weight: 700;
  color: var(--tn-primary-light);
  line-height: 1;
}

.tn-stat-label {
  font-size: var(--tn-text-sm);
  color: var(--tn-text-sub);
}

/* Section titles */
.tn-section-eyebrow {
  display: inline-block;
  font-family: var(--tn-font-heading);
  font-size: var(--tn-text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--tn-accent);
  margin-bottom: var(--tn-space-3);
}

.tn-section-title {
  font-family: var(--tn-font-heading);
  font-size: var(--tn-text-3xl);
  font-weight: 800;
  color: var(--tn-text-on-dark);
  line-height: 1.2;
}

.tn-section-body {
  font-size: var(--tn-text-md);
  color: var(--tn-text-sub);
  line-height: 1.8;
}

/* Header / Nav */
.tn-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--tn-z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--tn-space-8);
  height: 64px;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--tn-border-subtle);
  transition: background var(--tn-dur-normal);
}

.tn-nav-logo {
  display: flex;
  align-items: center;
  gap: var(--tn-space-2);
  font-family: var(--tn-font-heading);
  font-size: var(--tn-text-xl);
  font-weight: 800;
  color: var(--tn-text-on-dark);
}

.tn-nav-links {
  display: flex;
  align-items: center;
  gap: var(--tn-space-6);
  list-style: none;
}

.tn-nav-links a {
  font-size: var(--tn-text-sm);
  font-weight: 500;
  color: var(--tn-text-sub);
  transition: color var(--tn-dur-fast);
}

.tn-nav-links a:hover {
  color: var(--tn-text-on-dark);
}

/* Footer */
.tn-footer {
  background: var(--tn-bg-2);
  border-top: 1px solid var(--tn-border-subtle);
  padding: var(--tn-space-16) 0 var(--tn-space-8);
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--tn-bg); }
::-webkit-scrollbar-thumb { background: var(--tn-surface-3); border-radius: var(--tn-radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--tn-primary); }

/* Selection */
::selection {
  background: rgba(79, 107, 255, 0.35);
  color: #fff;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--tn-primary);
  outline-offset: 3px;
}

/* Noise texture overlay mixin (use via pseudo-element) */
.tn-noise::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  border-radius: inherit;
}

/* Glow line accent (top border glow) */
.tn-glow-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tn-primary), transparent);
}

/* Pulse animation for live indicators */
@keyframes tn-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes tn-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes tn-shine {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes tn-nova-spin {
  0% { transform: rotate(0deg) scale(1); opacity: 0.7; }
  50% { transform: rotate(180deg) scale(1.15); opacity: 1; }
  100% { transform: rotate(360deg) scale(1); opacity: 0.7; }
}

@keyframes tn-wpm-count {
  from { transform: scale(0.8); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.tn-anim-pulse { animation: tn-pulse 2s ease-in-out infinite; }
.tn-anim-float { animation: tn-float 4s ease-in-out infinite; }

/* Responsive helpers */
@media (max-width: 768px) {
  .tn-hide-mobile { display: none !important; }
  .tn-container, .tn-container-wide { padding: 0 var(--tn-space-4); }
}

@media (min-width: 769px) {
  .tn-hide-desktop { display: none !important; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}