/* ============================================================
   ZIDOSOFT — DESIGN SYSTEM
   Foundation for every page. Tokens, typography, primitives.
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

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

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

/* ---------- THEME TOKENS — DARK (default) ---------- */
:root,
:root[data-theme="dark"] {
  color-scheme: dark;

  --bg:             #0A0A0B;
  --bg-elev-1:      #111113;
  --bg-elev-2:      #18181B;
  --bg-elev-3:      #1F1F23;

  --text:           #F5F5F3;
  --text-muted:     #8A8A8F;
  --text-dim:       #5A5A60;
  --text-inverse:   #0A0A0B;

  --line:           #1F1F23;
  --line-strong:    #2A2A2F;

  --accent:         #C9A961;
  --accent-hover:   #D9BC7A;
  --accent-dim:     rgba(201, 169, 97, 0.12);

  --success:        #4ADE80;
  --warning:        #FBBF24;
  --danger:         #F87171;

  --grid-line:      rgba(245, 245, 243, 0.05);
  --shadow-sm:      0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md:      0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg:      0 24px 64px rgba(0, 0, 0, 0.5);
}

/* ---------- THEME TOKENS — LIGHT ---------- */
:root[data-theme="light"] {
  color-scheme: light;

  --bg:             #FAFAF8;
  --bg-elev-1:      #FFFFFF;
  --bg-elev-2:      #F4F4F1;
  --bg-elev-3:      #ECECE8;

  --text:           #111112;
  --text-muted:     #5C5C60;
  --text-dim:       #8A8A8F;
  --text-inverse:   #FAFAF8;

  --line:           #E5E5E1;
  --line-strong:    #D4D4CE;

  --accent:         #8B6F2E;
  --accent-hover:   #A58540;
  --accent-dim:     rgba(139, 111, 46, 0.10);

  --success:        #15803D;
  --warning:        #B45309;
  --danger:         #B91C1C;

  --grid-line:      rgba(17, 17, 18, 0.05);
  --shadow-sm:      0 1px 2px rgba(17, 17, 18, 0.06);
  --shadow-md:      0 8px 24px rgba(17, 17, 18, 0.08);
  --shadow-lg:      0 24px 64px rgba(17, 17, 18, 0.12);
}

/* ---------- SPACING / TIMING ---------- */
:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  --container-max: 1240px;
  --container-pad: 24px;

  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast:    150ms;
  --dur-base:    300ms;
  --dur-slow:    600ms;

  --font-display: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* ---------- BASE ---------- */
html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--dur-base) var(--ease),
              color var(--dur-base) var(--ease);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}

h1 { font-size: clamp(2.75rem, 6vw, 5.5rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); letter-spacing: -0.03em; }
h3 { font-size: clamp(1.375rem, 2vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-muted);
  text-wrap: pretty;
}

.text-lg { font-size: 1.25rem; line-height: 1.6; }
.text-sm { font-size: 0.9375rem; }
.text-xs { font-size: 0.8125rem; }
.text-muted { color: var(--text-muted); }
.text-dim { color: var(--text-dim); }
.text-center { text-align: center; }

.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.mono { font-family: var(--font-mono); }

::selection {
  background: var(--accent);
  color: var(--text-inverse);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- LAYOUT ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--space-9) 0;
  position: relative;
}

@media (min-width: 768px) {
  .section { padding: var(--space-10) 0; }
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--text-inverse);
}

.btn-accent {
  background: var(--accent);
  color: var(--text-inverse);
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  background: var(--bg-elev-2);
  border-color: var(--text-dim);
}

.btn-lg { padding: 16px 28px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }

/* ---------- CARDS ---------- */
.card {
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--dur-base) var(--ease);
}

.card-interactive:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ---------- FORMS ---------- */
.form-group { margin-bottom: var(--space-5); }

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text);
  font-size: 0.9375rem;
  transition: border-color var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* ---------- UTILITIES ---------- */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.hidden { display: none !important; }