/* ============================================
   TECHMARKET — Design System & Global Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=DM+Mono:wght@400;500&display=swap');

:root {
  /* Brand Colors */
  --color-bg:         #0a0a0f;
  --color-surface:    #111118;
  --color-surface-2:  #1a1a24;
  --color-border:     #252535;
  --color-border-2:   #32324a;

  --color-primary:    #6c63ff;
  --color-primary-d:  #5548e0;
  --color-primary-l:  #8b83ff;
  --color-accent:     #00d4aa;
  --color-accent-d:   #00b891;
  --color-danger:     #ff4d6a;
  --color-warning:    #ffb800;
  --color-success:    #00d4aa;

  --color-text:       #f0f0fa;
  --color-text-2:     #9898b8;
  --color-text-3:     #5c5c7a;

  /* Typography */
  --font-sans:  'Plus Jakarta Sans', sans-serif;
  --font-mono:  'DM Mono', monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* 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;

  /* Layout */
  --max-width: 1280px;
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow:     0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 24px rgba(108,99,255,0.25);
  --shadow-accent-glow: 0 0 24px rgba(0,212,170,0.2);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition:      0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-base);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(108,99,255,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--font-sans); }
input, select, textarea { font-family: var(--font-sans); }

main {
  flex: 1;
  position: relative;
  z-index: 1;
}

/* ── Container ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── Disclaimer ── */
.disclaimer {
  background: linear-gradient(90deg, rgba(255,184,0,0.12), rgba(255,184,0,0.06));
  border-bottom: 1px solid rgba(255,184,0,0.2);
  color: var(--color-warning);
  text-align: center;
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.disclaimer span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-d));
  color: #fff;
  box-shadow: 0 4px 16px rgba(108,99,255,0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(108,99,255,0.4);
  background: linear-gradient(135deg, var(--color-primary-l), var(--color-primary));
}

.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border);
  border-color: var(--color-border-2);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-d));
  color: #000;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0,212,170,0.25);
}

.btn-accent:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,212,170,0.4);
}

.btn-danger {
  background: rgba(255,77,106,0.15);
  color: var(--color-danger);
  border: 1px solid rgba(255,77,106,0.3);
}

.btn-danger:hover {
  background: rgba(255,77,106,0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-2);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-border-2);
  background: var(--color-surface-2);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* ── Cards ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--color-border-2);
  box-shadow: var(--shadow);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-primary { background: rgba(108,99,255,0.15); color: var(--color-primary-l); }
.badge-success { background: rgba(0,212,170,0.15); color: var(--color-accent); }
.badge-warning { background: rgba(255,184,0,0.15); color: var(--color-warning); }
.badge-danger  { background: rgba(255,77,106,0.15); color: var(--color-danger); }

/* ── Form elements ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-2);
}

.form-input {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
}

.form-input::placeholder {
  color: var(--color-text-3);
}

/* ── Section headers ── */
.section-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
}

/* ── Stars ── */
.stars {
  display: inline-flex;
  gap: 2px;
  color: var(--color-warning);
  font-size: var(--text-sm);
}

/* ── Utility ── */
.text-muted  { color: var(--color-text-2); }
.text-xs     { font-size: var(--text-xs); }
.text-sm     { font-size: var(--text-sm); }
.text-mono   { font-family: var(--font-mono); }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary-l); }
.text-danger  { color: var(--color-danger); }

.mt-4  { margin-top: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-8  { margin-bottom: var(--space-8); }
.py-8  { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

.flex     { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }

/* ── Loading skeleton ── */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-2) 25%, var(--color-border) 50%, var(--color-surface-2) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Toast notifications ── */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.3s ease forwards;
  pointer-events: all;
  min-width: 280px;
  max-width: 400px;
}

.toast.success { border-color: rgba(0,212,170,0.4); }
.toast.error   { border-color: rgba(255,77,106,0.4); }
.toast-icon { font-size: var(--text-lg); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(16px); }
}

/* ── Price ── */
.price {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.price-original {
  font-size: var(--text-sm);
  color: var(--color-text-3);
  text-decoration: line-through;
  font-family: var(--font-mono);
}

.price-discount {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-danger);
  background: rgba(255,77,106,0.1);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ── Empty state ── */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-2);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

.empty-state h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-3); }

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

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

@media (max-width: 480px) {
  .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
  .btn-lg { padding: var(--space-3) var(--space-6); }
}

/* ── Form validation states ── */
.form-input.is-invalid,
input.is-invalid,
select.is-invalid {
  border-color: var(--color-danger) !important;
  box-shadow: 0 0 0 3px rgba(255,77,106,0.15);
}

.field-error {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-danger);
  font-weight: 600;
  margin-top: 4px;
  padding-left: 2px;
}