/* ============================================================
   CRYPTO VAULT PRO — GLOBAL DESIGN SYSTEM
   main.css — Variables, resets, typography, layout utilities
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* Colors */
  --primary:          #7C3AED;
  --primary-light:    #9B59F5;
  --primary-dark:     #5B21B6;
  --primary-glow:     rgba(124, 58, 237, 0.35);

  --accent:           #F59E0B;
  --accent-light:     #FBBF24;
  --accent-dark:      #D97706;
  --accent-glow:      rgba(245, 158, 11, 0.35);

  --bg-base:          #08081A;
  --bg-surface:       #0F0F24;
  --bg-card:          rgba(255, 255, 255, 0.04);
  --bg-card-hover:    rgba(255, 255, 255, 0.07);
  --bg-input:         rgba(255, 255, 255, 0.06);
  --bg-overlay:       rgba(0, 0, 0, 0.75);

  --border:           rgba(255, 255, 255, 0.08);
  --border-focus:     rgba(124, 58, 237, 0.6);
  --border-strong:    rgba(255, 255, 255, 0.15);

  --text-primary:     #FFFFFF;
  --text-secondary:   #CBD5E1;
  --text-muted:       #64748B;
  --text-disabled:    #334155;

  --success:          #10B981;
  --success-bg:       rgba(16, 185, 129, 0.12);
  --success-border:   rgba(16, 185, 129, 0.3);

  --danger:           #EF4444;
  --danger-bg:        rgba(239, 68, 68, 0.12);
  --danger-border:    rgba(239, 68, 68, 0.3);

  --warning:          #F59E0B;
  --warning-bg:       rgba(245, 158, 11, 0.12);
  --warning-border:   rgba(245, 158, 11, 0.3);

  --info:             #3B82F6;
  --info-bg:          rgba(59, 130, 246, 0.12);
  --info-border:      rgba(59, 130, 246, 0.3);

  /* Gradients */
  --gradient-primary:  linear-gradient(135deg, #7C3AED 0%, #5B21B6 100%);
  --gradient-accent:   linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  --gradient-hero:     linear-gradient(135deg, #0F0F24 0%, #1E1040 50%, #0F0F24 100%);
  --gradient-card:     linear-gradient(135deg, rgba(124,58,237,0.1) 0%, rgba(91,33,182,0.05) 100%);
  --gradient-shine:    linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);

  /* Typography */
  --font-primary:   'Inter', system-ui, sans-serif;
  --font-display:   'Space Grotesk', system-ui, sans-serif;

  --text-xs:   0.75rem;    /* 12px */
  --text-sm:   0.875rem;   /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg:   1.125rem;   /* 18px */
  --text-xl:   1.25rem;    /* 20px */
  --text-2xl:  1.5rem;     /* 24px */
  --text-3xl:  1.875rem;   /* 30px */
  --text-4xl:  2.25rem;    /* 36px */
  --text-5xl:  3rem;       /* 48px */

  /* Spacing */
  --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;

  /* Radii */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:     0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl:     0 20px 60px rgba(0,0,0,0.6);
  --shadow-purple: 0 8px 32px rgba(124,58,237,0.3);
  --shadow-gold:   0 8px 32px rgba(245,158,11,0.3);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Sidebar */
  --sidebar-width:       260px;
  --sidebar-width-mini:  72px;

  /* Z-indices */
  --z-sidebar:   100;
  --z-topbar:    200;
  --z-modal:     1000;
  --z-toast:     2000;
  --z-loader:    3000;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { color: var(--text-secondary); }

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--accent); }

img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(124, 58, 237, 0.4);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ── Selection ── */
::selection {
  background: var(--primary);
  color: white;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-6);
}

/* ── Grid ── */
.grid { display: grid; }
.grid-2  { grid-template-columns: repeat(2, 1fr); }
.grid-3  { grid-template-columns: repeat(3, 1fr); }
.grid-4  { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* ── Flex ── */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.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 ── */
.p-4  { padding: var(--space-4); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-8); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

/* ── Text utilities ── */
.text-center   { text-align: center; }
.text-right    { text-align: right; }
.text-sm       { font-size: var(--text-sm); }
.text-xs       { font-size: var(--text-xs); }
.text-lg       { font-size: var(--text-lg); }
.text-muted    { color: var(--text-muted); }
.text-success  { color: var(--success); }
.text-danger   { color: var(--danger); }
.text-warning  { color: var(--warning); }
.text-primary-c { color: var(--primary-light); }
.text-accent   { color: var(--accent); }
.font-bold     { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium   { font-weight: 500; }
.truncate      { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ── Background Grid Pattern ── */
.bg-grid {
  background-image:
    linear-gradient(rgba(124, 58, 237, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── Glow Effects ── */
.glow-purple {
  box-shadow: 0 0 40px var(--primary-glow);
}
.glow-gold {
  box-shadow: 0 0 40px var(--accent-glow);
}

/* ── Divider ── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-6) 0;
}

/* ── Hidden ── */
.hidden { display: none !important; }
.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; transform: translateY(10px); }
  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 spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}

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

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

@keyframes toastIn {
  from { opacity: 0; transform: translateX(120%); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(120%); }
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -30px) scale(1.05); }
  66%       { transform: translate(-20px, 20px) scale(0.95); }
}

/* ── Utility Animation Classes ── */
.animate-fade-in     { animation: fadeIn 0.4s ease forwards; }
.animate-fade-down   { animation: fadeInDown 0.4s ease forwards; }
.animate-slide-left  { animation: slideInLeft 0.4s ease forwards; }
.animate-slide-right { animation: slideInRight 0.4s ease forwards; }
.animate-pulse       { animation: pulse 2s ease infinite; }
.animate-spin        { animation: spin 1s linear infinite; }
.animate-float       { animation: float 3s ease-in-out infinite; }

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

/* ── Skeleton Loader ── */
.skeleton {
  background: linear-gradient(90deg,
    rgba(255,255,255,0.04) 25%,
    rgba(255,255,255,0.09) 50%,
    rgba(255,255,255,0.04) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ── Responsive Breakpoints ── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-4); }
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--text-2xl); }
  h2 { font-size: var(--text-xl); }
}