/* ═══════════════════════════════════════════════════════════════════════
   Design System v1 — TON Agent Platform
   Overlay on top of styles.css / studio.css.
   Modernizes palette, typography, interactive states, and glass effects
   without breaking existing layout.
   ═══════════════════════════════════════════════════════════════════════ */

:root {
  /* ── Color palette ────────────────────────────────────────── */
  --ds-bg-deep: #05060d;          /* deepest background */
  --ds-bg-base: #0a0b14;          /* page base */
  --ds-bg-elev-1: #12141f;        /* card base */
  --ds-bg-elev-2: #181a26;        /* hover / active */
  --ds-bg-elev-3: #1e2030;        /* popover / modal */

  --ds-border-subtle: rgba(255, 255, 255, 0.05);
  --ds-border: rgba(255, 255, 255, 0.09);
  --ds-border-strong: rgba(255, 255, 255, 0.16);

  --ds-text: #f0f2f8;
  --ds-text-muted: #94a0b4;
  --ds-text-dim: #6b7387;

  /* Brand — vibrant, more saturated */
  --ds-primary: #00a8ff;
  --ds-primary-bright: #22b8ff;
  --ds-primary-dim: rgba(0, 168, 255, 0.12);

  --ds-accent: #8b5cf6;           /* purple accent */
  --ds-accent-bright: #a78bfa;
  --ds-accent-dim: rgba(139, 92, 246, 0.12);

  --ds-success: #10b981;
  --ds-warning: #f59e0b;
  --ds-danger: #ef4444;
  --ds-gold: #fbbf24;

  /* Gradients */
  --ds-grad-primary: linear-gradient(135deg, #00a8ff 0%, #0088cc 100%);
  --ds-grad-brand: linear-gradient(135deg, #00a8ff 0%, #8b5cf6 100%);
  --ds-grad-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  --ds-grad-sunset: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #f59e0b 100%);
  --ds-grad-hero: radial-gradient(ellipse at top, rgba(0, 168, 255, 0.14), transparent 50%),
                  radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.10), transparent 50%);

  /* ── Elevation / shadows ──────────────────────────────────── */
  --ds-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --ds-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  --ds-shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.4);
  --ds-shadow-xl: 0 32px 64px rgba(0, 0, 0, 0.5);

  /* Colored glows */
  --ds-glow-primary: 0 0 32px rgba(0, 168, 255, 0.35);
  --ds-glow-primary-strong: 0 0 48px rgba(0, 168, 255, 0.5);
  --ds-glow-accent: 0 0 32px rgba(139, 92, 246, 0.35);
  --ds-glow-gold: 0 0 32px rgba(251, 191, 36, 0.35);

  /* ── Radii ────────────────────────────────────────────────── */
  --ds-r-sm: 8px;
  --ds-r: 12px;
  --ds-r-md: 16px;
  --ds-r-lg: 20px;
  --ds-r-xl: 28px;
  --ds-r-pill: 999px;

  /* ── Motion ───────────────────────────────────────────────── */
  --ds-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ds-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ds-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ds-t-fast: 0.15s;
  --ds-t: 0.25s;
  --ds-t-slow: 0.45s;

  /* ── Typography scale (fluid) ─────────────────────────────── */
  --ds-fs-xs: clamp(11px, 0.72vw, 12px);
  --ds-fs-sm: clamp(13px, 0.85vw, 14px);
  --ds-fs-base: clamp(14px, 0.95vw, 16px);
  --ds-fs-lg: clamp(17px, 1.15vw, 19px);
  --ds-fs-xl: clamp(21px, 1.55vw, 24px);
  --ds-fs-2xl: clamp(28px, 2.4vw, 36px);
  --ds-fs-3xl: clamp(40px, 4.2vw, 60px);
  --ds-fs-4xl: clamp(52px, 6vw, 88px);

  /* ── Backward-compat overrides ───────────────────────────── */
  /* Refresh old vars so existing components auto-upgrade */
  --background: var(--ds-bg-base);
  --surface: var(--ds-bg-elev-1);
  --primary: var(--ds-primary);
  --secondary: var(--ds-primary-bright);
  --accent: var(--ds-accent);
  --text: var(--ds-text);
  --text-muted: var(--ds-text-muted);
  --border: var(--ds-border);

  /* Studio-specific compat */
  --bg-primary: var(--ds-bg-elev-1);
  --bg-secondary: var(--ds-bg-elev-2);
  --text-primary: var(--ds-text);
  --primary-dark: var(--ds-primary);
  --accent-dim: var(--ds-primary-dim);
}

/* ═══════════════════════════════════════════════════════════════════════
   Global resets & smoothing
   ═══════════════════════════════════════════════════════════════════════ */

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--ds-bg-base);
  background-image: var(--ds-grad-hero);
  background-attachment: fixed;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11', 'ss01';
  letter-spacing: -0.011em;
}

::selection {
  background: rgba(0, 168, 255, 0.28);
  color: #fff;
}

/* ── Modern scrollbars ─────────────────────────────────────── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(148, 160, 180, 0.18);
  border-radius: var(--ds-r-pill);
  border: 2px solid transparent;
  background-clip: padding-box;
  transition: background var(--ds-t);
}
::-webkit-scrollbar-thumb:hover { background: rgba(148, 160, 180, 0.35); background-clip: padding-box; }

/* Firefox */
* { scrollbar-width: thin; scrollbar-color: rgba(148,160,180,0.25) transparent; }

/* ── Focus states (accessibility + polish) ────────────────── */
*:focus-visible {
  outline: 2px solid var(--ds-primary);
  outline-offset: 2px;
  border-radius: 6px;
}
button:focus-visible,
a:focus-visible,
.btn:focus-visible {
  box-shadow: 0 0 0 3px var(--ds-primary-dim), var(--ds-glow-primary);
}

/* ═══════════════════════════════════════════════════════════════════════
   Utility classes — opt-in modern components
   ═══════════════════════════════════════════════════════════════════════ */

/* Glass card */
.ds-glass {
  background: linear-gradient(135deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-md);
  box-shadow: var(--ds-shadow), inset 0 1px 0 rgba(255,255,255,0.04);
}

.ds-glass-hover {
  transition: transform var(--ds-t) var(--ds-ease-out),
              border-color var(--ds-t) var(--ds-ease),
              box-shadow var(--ds-t) var(--ds-ease);
}
.ds-glass-hover:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 168, 255, 0.28);
  box-shadow: var(--ds-shadow-lg), inset 0 1px 0 rgba(255,255,255,0.06), var(--ds-glow-primary);
}

/* Gradient text */
.ds-grad-text {
  background: var(--ds-grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.ds-grad-text-gold {
  background: var(--ds-grad-gold);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.ds-grad-text-sunset {
  background: var(--ds-grad-sunset);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Primary button */
.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: var(--ds-grad-primary);
  color: #fff;
  border: none;
  border-radius: var(--ds-r);
  font-family: inherit;
  font-size: var(--ds-fs-sm);
  font-weight: 600;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,168,255,0.25);
  transition: all var(--ds-t) var(--ds-ease-out);
  text-decoration: none;
}
.ds-btn::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), transparent 60%);
  opacity: 0;
  transition: opacity var(--ds-t);
}
.ds-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,168,255,0.4), var(--ds-glow-primary);
}
.ds-btn:hover::before { opacity: 1; }
.ds-btn:active { transform: translateY(0); }

.ds-btn-ghost {
  background: transparent;
  color: var(--ds-text);
  border: 1px solid var(--ds-border-strong);
  box-shadow: none;
}
.ds-btn-ghost:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--ds-primary);
}

/* Pill badges */
.ds-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--ds-r-pill);
  font-size: var(--ds-fs-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.ds-pill-primary { background: var(--ds-primary-dim); color: var(--ds-primary-bright); }
.ds-pill-accent { background: var(--ds-accent-dim); color: var(--ds-accent-bright); }
.ds-pill-gold { background: rgba(251,191,36,0.12); color: var(--ds-gold); }
.ds-pill-success { background: rgba(16,185,129,0.12); color: var(--ds-success); }

/* Animated pulse dot */
.ds-pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ds-success);
  box-shadow: 0 0 8px var(--ds-success);
  animation: ds-pulse 2s var(--ds-ease) infinite;
}
@keyframes ds-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.15); }
}

/* Shimmer loading */
.ds-shimmer {
  background: linear-gradient(90deg,
    rgba(255,255,255,0.03) 0%,
    rgba(255,255,255,0.08) 50%,
    rgba(255,255,255,0.03) 100%);
  background-size: 200% 100%;
  animation: ds-shimmer 1.8s infinite linear;
}
@keyframes ds-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Fade in */
.ds-fade-in { animation: ds-fade-in 0.4s var(--ds-ease-out) both; }
@keyframes ds-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Subtle float animation */
.ds-float { animation: ds-float 6s var(--ds-ease) infinite; }
@keyframes ds-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ═══════════════════════════════════════════════════════════════════════
   Backward-compat upgrades — refresh existing components
   These target selectors used by styles.css / studio.css
   ═══════════════════════════════════════════════════════════════════════ */

/* Refresh body */
body {
  color: var(--ds-text);
}

/* Upgrade headings */
h1, h2, h3, h4 {
  letter-spacing: -0.02em;
  font-weight: 800;
}

/* Upgrade existing hero title if present */
.hero-title {
  letter-spacing: -0.035em !important;
  font-weight: 900 !important;
}

.gradient-text {
  background: var(--ds-grad-brand) !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
}

.accent-text {
  color: var(--ds-primary-bright) !important;
  text-shadow: 0 0 24px rgba(0, 168, 255, 0.4);
}

/* Upgrade hero badge if present */
.hero-badge {
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  background: rgba(0, 168, 255, 0.06) !important;
  border: 1px solid rgba(0, 168, 255, 0.18) !important;
  box-shadow: 0 8px 24px rgba(0, 168, 255, 0.12);
}

.pulse-dot {
  background: var(--ds-success) !important;
  box-shadow: 0 0 12px var(--ds-success);
  animation: ds-pulse 2s var(--ds-ease) infinite;
}

/* Upgrade primary CTAs — landing */
.cta-primary, .btn-primary,
button[class*="primary"]:not(.btn-primary-custom) {
  background: var(--ds-grad-primary) !important;
  border: none !important;
  box-shadow: 0 4px 16px rgba(0, 168, 255, 0.25) !important;
  transition: all var(--ds-t) var(--ds-ease-out) !important;
  font-weight: 700 !important;
  letter-spacing: -0.01em !important;
}
.cta-primary:hover, .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 168, 255, 0.4), var(--ds-glow-primary) !important;
}

.cta-secondary, .btn-secondary {
  transition: all var(--ds-t) var(--ds-ease-out) !important;
}
.cta-secondary:hover, .btn-secondary:hover {
  border-color: var(--ds-primary) !important;
  background: rgba(0, 168, 255, 0.04) !important;
}

/* Upgrade section cards */
.feature-card, .pricing-card, .testimonial-card, .tech-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005)) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--ds-border) !important;
  transition: all var(--ds-t) var(--ds-ease-out) !important;
}
.feature-card:hover, .pricing-card:hover, .testimonial-card:hover, .tech-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 168, 255, 0.3) !important;
  box-shadow: var(--ds-shadow-lg), 0 0 24px rgba(0, 168, 255, 0.15) !important;
}

/* Upgrade section titles */
.section-title, .section-header h2 {
  letter-spacing: -0.03em !important;
  font-weight: 800 !important;
}

/* Studio sidebar polish */
.nav-item {
  transition: all var(--ds-t) var(--ds-ease) !important;
  letter-spacing: -0.01em !important;
}
.nav-item:hover {
  background: rgba(0, 168, 255, 0.06) !important;
  color: var(--ds-text) !important;
}
.nav-item.active {
  background: linear-gradient(90deg, rgba(0,168,255,0.12), rgba(0,168,255,0.02)) !important;
  color: var(--ds-primary-bright) !important;
  box-shadow: inset 2px 0 0 var(--ds-primary);
}

.nav-badge {
  font-weight: 700 !important;
  letter-spacing: 0.03em !important;
  text-transform: uppercase;
  font-size: 10px !important;
  padding: 2px 8px !important;
}
.nav-badge.accent {
  background: var(--ds-accent-dim) !important;
  color: var(--ds-accent-bright) !important;
  border: 1px solid rgba(139, 92, 246, 0.24);
}

/* Studio page headers */
.page-title {
  letter-spacing: -0.025em !important;
  font-weight: 800 !important;
  background: linear-gradient(135deg, #fff 0%, #c9d1e0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Studio cards & metric cards */
.metric-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005)) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--ds-border) !important;
  transition: all var(--ds-t) var(--ds-ease-out) !important;
  overflow: hidden;
  position: relative;
}
.metric-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,168,255,0.4), transparent);
  opacity: 0;
  transition: opacity var(--ds-t);
}
.metric-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 168, 255, 0.28) !important;
  box-shadow: var(--ds-shadow-lg);
}
.metric-card:hover::before { opacity: 1; }

.metric-value {
  font-weight: 800 !important;
  letter-spacing: -0.02em !important;
  background: linear-gradient(135deg, #fff 0%, #a0aec0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-card.primary .metric-value {
  background: var(--ds-grad-primary);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.metric-card.accent .metric-value {
  background: var(--ds-grad-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.metric-card.secondary .metric-value {
  background: var(--ds-grad-sunset);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

.metric-icon {
  border-radius: var(--ds-r) !important;
  padding: 10px !important;
  background: linear-gradient(135deg, var(--ds-primary-dim), transparent) !important;
  border: 1px solid var(--ds-border);
}

/* Studio buttons */
.btn {
  transition: all var(--ds-t) var(--ds-ease-out) !important;
  font-weight: 600 !important;
  letter-spacing: -0.01em !important;
  border-radius: var(--ds-r) !important;
}
.btn-ghost {
  background: rgba(255,255,255,0.03) !important;
  border: 1px solid var(--ds-border) !important;
}
.btn-ghost:hover {
  background: rgba(0, 168, 255, 0.06) !important;
  border-color: var(--ds-primary) !important;
  color: var(--ds-primary-bright) !important;
}

/* Studio inputs */
.input, input[type="text"]:not([class*="lang"]),
input[type="email"], input[type="password"],
input[type="number"], input[type="search"],
textarea, select {
  background: var(--ds-bg-elev-1) !important;
  border: 1px solid var(--ds-border) !important;
  border-radius: var(--ds-r) !important;
  color: var(--ds-text) !important;
  transition: all var(--ds-t) var(--ds-ease) !important;
  font-family: inherit;
}
.input:focus, input[type="text"]:focus,
input[type="email"]:focus, input[type="password"]:focus,
input[type="number"]:focus, input[type="search"]:focus,
textarea:focus, select:focus {
  border-color: var(--ds-primary) !important;
  box-shadow: 0 0 0 3px var(--ds-primary-dim) !important;
  outline: none !important;
  background: var(--ds-bg-elev-2) !important;
}

/* Studio modal */
.modal-content, .modal-body {
  backdrop-filter: blur(24px) saturate(150%);
  -webkit-backdrop-filter: blur(24px) saturate(150%);
}

/* Toast notifications */
.toast {
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-radius: var(--ds-r) !important;
  border: 1px solid var(--ds-border) !important;
  box-shadow: var(--ds-shadow-lg) !important;
  font-weight: 500 !important;
  letter-spacing: -0.01em !important;
}

/* Tables */
table {
  border-collapse: separate;
  border-spacing: 0;
}
th {
  font-weight: 700 !important;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: var(--ds-fs-xs) !important;
  color: var(--ds-text-muted) !important;
}
tr { transition: background var(--ds-t); }
tbody tr:hover {
  background: rgba(0, 168, 255, 0.03);
}

/* Section transitions */
section, .section, .page {
  animation: ds-fade-in 0.4s var(--ds-ease-out) both;
}

/* Noise texture overlay (subtle, premium feel) */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* Ensure content stays above the noise */
body > * { position: relative; z-index: 2; }

/* ═══════════════════════════════════════════════════════════════════════
   Reduced motion
   ═══════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .ds-pulse-dot, .pulse-dot, .ds-float { animation: none !important; }
}

/* ═══════════════════════════════════════════════════════════════════════
   Mobile refinements
   ═══════════════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  body::before { opacity: 0.015; }
  .metric-card:hover, .feature-card:hover,
  .pricing-card:hover, .testimonial-card:hover { transform: none; }
}

/* ═══════════════════════════════════════════════════════════════════════
   Premium theme accents — specific components
   ═══════════════════════════════════════════════════════════════════════ */

/* Tester Hub level pills get proper glow */
[class*="lvl-5"], [class*="lvl-6"] {
  box-shadow: 0 0 20px currentColor;
}

/* Glow on important metric values */
.metric-value[id*="reward"],
.metric-value[id*="payout"],
.metric-value[id*="xp"] {
  text-shadow: 0 0 20px rgba(0, 168, 255, 0.3);
}

/* Code blocks */
code, pre, .mono {
  font-family: 'JetBrains Mono', 'SF Mono', Consolas, Monaco, monospace;
  font-size: 0.92em;
  letter-spacing: -0.01em;
}
code:not(pre code) {
  padding: 2px 6px;
  background: rgba(0, 168, 255, 0.06);
  border: 1px solid var(--ds-border);
  border-radius: 6px;
  color: var(--ds-primary-bright);
}