/* ======================================================================
   FutiaSpace · base.css
   Design tokens, reset, typography, utilities, helpers
   Colours updated to FUTIA official palette:
     Green  #2D7D32  · Orange #E87722  · Sea Blue #006994
     Dark Brown #4A2511  · White #FFFFFF  · Black #1A1A1A
   ====================================================================== */

:root {
  /* ---------- Brand: Green scale (FUTIA Official Green) ---------- */
  --violet-50:  #f0faf0;
  --violet-100: #ddf0de;
  --violet-200: #bbe0bc;
  --violet-300: #88cf8d;
  --violet-400: #57bb61;   /* lighter green — icons / text / links on dark bg  */
  --violet-500: #3da543;   /* medium green                                     */
  --violet-600: #2D7D32;   /* FUTIA official green — primary brand colour       */
  --violet-700: #226028;
  --violet-800: #1a481e;
  --violet-900: #113014;

  /* ---------- Accent: Orange scale (FUTIA Official Orange) ---------- */
  --amber-200: #ffd9b3;
  --amber-300: #ffb87a;
  --amber-400: #E87722;   /* FUTIA official orange — accent / CTA              */
  --amber-500: #cf6318;
  --amber-600: #b55214;

  /* ---------- Semantic colors ---------- */
  --color-primary:        var(--violet-500);
  --color-primary-hover:  var(--violet-600);
  --color-primary-soft:   rgba(45, 125, 50, 0.14);   /* green-600 alpha        */
  --color-accent:         var(--amber-400);
  --color-accent-hover:   var(--amber-500);
  --color-danger:         #ef4444;
  --color-danger-soft:    rgba(239, 68, 68, 0.12);
  --color-success:        #10b981;
  --color-success-soft:   rgba(16, 185, 129, 0.14);
  --color-info:           #006994;   /* FUTIA Sea Blue                          */
  --color-warning:        var(--amber-500);

  /* ---------- Surfaces (dark default) ---------- */
  --bg-base:      #0a0a10;
  --bg-surface:   #14141c;
  --bg-elevated:  #1c1c26;
  --bg-input:     #1a1a24;
  --bg-overlay:   rgba(0, 0, 0, 0.65);
  --bg-shimmer:   linear-gradient(90deg, #1a1a24 0%, #22222e 50%, #1a1a24 100%);

  /* ---------- Text ---------- */
  --text-primary:   #f5f5f7;
  --text-secondary: #a8a8b3;
  --text-muted:     #6b6b78;
  --text-on-primary:#ffffff;

  /* ---------- Borders & dividers ---------- */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --border-input:  rgba(255, 255, 255, 0.10);

  /* ---------- Layout ---------- */
  --header-h: 56px;
  --nav-h: 64px;
  --max-w: 600px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);

  /* ---------- Radii ---------- */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* ---------- Shadows ---------- */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.20);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.22);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.40);
  --shadow-glow: 0 0 0 4px rgba(45, 125, 50, 0.18);   /* green glow            */

  /* ---------- Brand gradient (green → lighter green) ---------- */
  --gradient-brand: linear-gradient(135deg, var(--violet-600) 0%, var(--violet-400) 100%);
  /* Story gradient: green → FUTIA orange                                       */
  --gradient-story: linear-gradient(135deg, var(--violet-500), var(--amber-400));

  /* ---------- Motion ---------- */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 120ms;
  --t-base: 200ms;
  --t-slow: 320ms;

  /* ---------- Typography ---------- */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.85rem;
  --fs-base: 0.95rem;
  --fs-md: 1rem;
  --fs-lg: 1.15rem;
  --fs-xl: 1.4rem;
  --fs-2xl: 1.8rem;
  --fs-3xl: 2.4rem;
}

/* =====================================================================
   Light mode overrides
   ===================================================================== */
body.light-mode {
  --bg-base:      #fafafa;
  --bg-surface:   #ffffff;
  --bg-elevated:  #f5f5f7;
  --bg-input:     #f0f0f4;
  --bg-overlay:   rgba(15, 15, 20, 0.45);
  --bg-shimmer:   linear-gradient(90deg, #f0f0f4 0%, #e8e8ee 50%, #f0f0f4 100%);

  --text-primary:   #0a0a0f;
  --text-secondary: #5b5b66;
  --text-muted:     #9a9aa4;

  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.12);
  --border-input:  rgba(0, 0, 0, 0.10);

  --shadow-xs: 0 1px 2px rgba(15, 15, 20, 0.04);
  --shadow-sm: 0 2px 8px rgba(15, 15, 20, 0.06);
  --shadow-md: 0 6px 22px rgba(15, 15, 20, 0.08);
  --shadow-lg: 0 18px 44px rgba(15, 15, 20, 0.14);
  --shadow-glow: 0 0 0 4px rgba(45, 125, 50, 0.16);   /* green glow light mode  */

  --color-primary-soft: rgba(45, 125, 50, 0.10);
}

/* =====================================================================
   Reset
   ===================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-base);
  overscroll-behavior-y: none;
  transition: background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease);
}

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

button {
  font: inherit; color: inherit; background: transparent;
  border: none; cursor: pointer; padding: 0;
}

input, textarea, select {
  font: inherit; color: inherit;
  background: transparent; border: none; outline: none;
}

a { color: var(--violet-400); text-decoration: none; }
a:hover { color: var(--violet-300); }
body.light-mode a { color: var(--violet-600); }
body.light-mode a:hover { color: var(--violet-700); }

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

p { margin: 0; }

hr {
  border: 0;
  border-top: 1px solid var(--border-subtle);
  margin: 12px 0;
}

::selection {
  background: var(--violet-500);
  color: #fff;
}

/* Scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: var(--violet-400); }
::-webkit-scrollbar-track { background: transparent; }

/* =====================================================================
   Utility classes
   ===================================================================== */
.clickable { cursor: pointer; }
.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;
}

.empty-text {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  padding: 32px 16px;
}

.empty-stories,
.empty-replies {
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  padding: 16px;
}

.section-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.see-more-link {
  display: block;
  text-align: center;
  margin-top: 12px;
  font-size: var(--fs-sm);
  color: var(--violet-400);
  font-weight: 600;
}
body.light-mode .see-more-link { color: var(--violet-600); }

/* =====================================================================
   Spinner
   ===================================================================== */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
body.light-mode .spinner {
  border-color: rgba(15, 15, 20, 0.15);
  border-top-color: var(--violet-600);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* =====================================================================
   Skeletons
   ===================================================================== */
.skeleton-post,
.skeleton-notif,
.product-card.skeleton,
.metric-card.skeleton {
  background: var(--bg-shimmer);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}
.skeleton-post   { height: 180px; margin-bottom: 12px; }
.skeleton-notif  { height: 64px;  margin: 8px 16px; border-radius: var(--radius-md); }
.skeleton-img    { height: 140px; border-radius: var(--radius-md); background: var(--bg-shimmer); background-size: 200% 100%; animation: shimmer 1.4s ease-in-out infinite; }
.skeleton-lines .line { height: 10px; background: var(--bg-shimmer); background-size: 200% 100%; border-radius: 4px; margin: 8px 0; animation: shimmer 1.4s ease-in-out infinite; }

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

/* =====================================================================
   Lucide icons baseline
   ===================================================================== */
[data-lucide],
svg.lucide {
  width: 18px; height: 18px;
  stroke-width: 2;
  flex-shrink: 0;
}

/* =====================================================================
   Forms (shared base)
   ===================================================================== */
.form-group {
  margin-bottom: 16px;
  position: relative;
}
.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="number"],
.form-group select,
.form-group textarea,
input[type="text"]:not(.search-page-input):not(.chat-input):not(.comment-input):not(.reply-input),
input[type="email"],
input[type="password"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-base);
  transition: border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
input:focus, select:focus, textarea:focus {
  border-color: var(--violet-500);
  box-shadow: var(--shadow-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder,
input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

.form-group textarea { resize: vertical; min-height: 80px; }

.form-row {
  display: flex; gap: 10px;
}
.form-group.half { flex: 1; }

.password-toggle {
  position: absolute;
  right: 10px;
  top: 32px;
  color: var(--text-muted);
  padding: 6px;
  border-radius: var(--radius-sm);
}
.password-toggle:hover { color: var(--text-primary); }

/* =====================================================================
   Animations (shared)
   ===================================================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pop {
  0%   { transform: scale(0.92); }
  60%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}