/* ============================================================
   CLIFFOS DESIGN SYSTEM v1.0
   ============================================================
   This file is a standalone foundation. It is NOT linked from
   any existing CliffOS page (index.php, purchasing.php, lodge.php).
   Nothing changes visually anywhere until a future release
   deliberately migrates one specific page to these classes.

   Sections:
   1. Design tokens (colour, type, spacing, radius, elevation, blur, motion, icon)
   2. Reset / base
   3. Typography
   4. Buttons
   5. Forms
   6. Cards
   7. Status badges
   8. Hero banner
   9. Empty / loading states
   10. Toast notifications
   11. Modal window
   12. Bottom sheet
   13. Floating action button
   14. Navigation (top bar, bottom tab bar)
   15. Motion & accessibility
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root{
  /* Colour — calm, nature-inspired, no bright corporate colours */
  --cf-forest:#1f3d2c;
  --cf-forest-light:#2f5940;
  --cf-moss:#5a7a5e;
  --cf-stone:#8b8577;
  --cf-mist:#e7ebe6;
  --cf-wood:#6b4a35;
  --cf-lantern:#c98a3a;
  --cf-firelight:#d97b3f;
  --cf-sunrise:#e8b86d;
  --cf-mountain-sky:#7a94a3;
  --cf-cream:#f7f5f0;
  --cf-ink:#20241f;
  --cf-muted:#6b6f68;
  --cf-line:rgba(32,36,31,.1);
  --cf-white:#ffffff;

  /* Status colours (map to badge system, section 7) */
  --cf-success:#2f6b4f;
  --cf-warning:#b8860b;
  --cf-danger:#a4392c;
  --cf-info:#4a6a8a;

  /* Typography scale */
  --cf-font-body:'Avenir','Avenir Next',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --cf-font-display:'Avenir','Avenir Next',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --cf-text-xs:11px;
  --cf-text-sm:13px;
  --cf-text-base:15px;
  --cf-text-md:17px;
  --cf-text-lg:20px;
  --cf-text-xl:26px;
  --cf-text-2xl:34px;
  --cf-leading-tight:1.15;
  --cf-leading-normal:1.45;
  --cf-weight-regular:400;
  --cf-weight-medium:600;
  --cf-weight-bold:800;

  /* Spacing scale (4px base unit) */
  --cf-space-1:4px;
  --cf-space-2:8px;
  --cf-space-3:12px;
  --cf-space-4:16px;
  --cf-space-5:20px;
  --cf-space-6:24px;
  --cf-space-8:32px;
  --cf-space-10:40px;
  --cf-space-12:48px;

  /* Radius scale */
  --cf-radius-sm:8px;
  --cf-radius-md:14px;
  --cf-radius-lg:20px;
  --cf-radius-xl:28px;
  --cf-radius-pill:999px;

  /* Elevation / shadow scale */
  --cf-shadow-sm:0 2px 8px rgba(20,24,20,.06);
  --cf-shadow-md:0 8px 24px rgba(20,24,20,.10);
  --cf-shadow-lg:0 20px 50px rgba(20,24,20,.16);

  /* Blur scale (glassmorphism) — with graceful fallback below */
  --cf-blur-sm:10px;
  --cf-blur-md:20px;
  --cf-blur-lg:30px;

  /* Motion timing */
  --cf-duration-fast:120ms;
  --cf-duration-base:220ms;
  --cf-duration-slow:360ms;
  --cf-ease:cubic-bezier(.2,.7,.3,1);

  /* Icon sizing */
  --cf-icon-sm:16px;
  --cf-icon-md:20px;
  --cf-icon-lg:28px;

  /* Safe-area aware spacing for mobile */
  --cf-safe-bottom:env(safe-area-inset-bottom,0px);
}

/* ---------- 2. RESET / BASE (scoped to .cf- prefixed usage only) ---------- */
.cf-root{font-family:var(--cf-font-body);color:var(--cf-ink);-webkit-font-smoothing:antialiased}
.cf-root *{box-sizing:border-box}
.cf-root img{max-width:100%;display:block}

/* ---------- 3. TYPOGRAPHY ---------- */
.cf-display{font-family:var(--cf-font-display);font-size:var(--cf-text-2xl);line-height:var(--cf-leading-tight);font-weight:var(--cf-weight-bold);margin:0}
.cf-title{font-size:var(--cf-text-xl);line-height:var(--cf-leading-tight);font-weight:var(--cf-weight-bold);margin:0}
.cf-heading{font-size:var(--cf-text-lg);font-weight:var(--cf-weight-bold);margin:0}
.cf-body{font-size:var(--cf-text-base);line-height:var(--cf-leading-normal);margin:0}
.cf-label{font-size:var(--cf-text-xs);font-weight:var(--cf-weight-bold);letter-spacing:.06em;text-transform:uppercase;color:var(--cf-muted);margin:0}
.cf-muted{color:var(--cf-muted)}
.cf-script{font-family:var(--cf-font-display);font-style:italic;color:var(--cf-forest-light)}

/* ---------- 4. BUTTONS ---------- */
.cf-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border-radius:var(--cf-radius-lg);font-size:var(--cf-text-base);font-weight:var(--cf-weight-bold);border:0;cursor:pointer;text-decoration:none;transition:transform var(--cf-duration-fast) var(--cf-ease),opacity var(--cf-duration-fast) var(--cf-ease);-webkit-tap-highlight-color:transparent}
.cf-btn:active{transform:scale(.97)}
.cf-btn:disabled,.cf-btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;pointer-events:none}
.cf-btn-primary{background:var(--cf-forest);color:#fff;box-shadow:var(--cf-shadow-sm)}
.cf-btn-secondary{background:rgba(31,61,44,.44);color:#f4faf5;border:1.5px solid rgba(255,255,255,.25)}
.cf-btn-danger{background:var(--cf-danger);color:#fff}
.cf-btn-success{background:var(--cf-success);color:#fff}
.cf-btn-ghost{background:transparent;color:var(--cf-forest);box-shadow:none}
.cf-btn-icon{min-width:44px;min-height:44px;padding:0;border-radius:var(--cf-radius-pill);background:var(--cf-mist);color:var(--cf-forest)}
.cf-btn-floating{position:fixed;right:20px;bottom:calc(20px + var(--cf-safe-bottom));width:56px;height:56px;border-radius:50%;background:var(--cf-forest);color:#fff;box-shadow:var(--cf-shadow-lg);font-size:24px;z-index:50}

/* ---------- 5. FORMS ---------- */
.cf-field{display:flex;flex-direction:column;gap:6px;margin-bottom:var(--cf-space-4)}
.cf-field label{font-size:var(--cf-text-sm);font-weight:var(--cf-weight-medium);color:var(--cf-muted)}
.cf-input,.cf-select,.cf-textarea{font:inherit;font-size:16px;padding:13px 14px;border-radius:var(--cf-radius-md);border:1px solid var(--cf-line);background:#fff;color:#20241f;min-height:48px}
.cf-textarea{min-height:96px;resize:vertical}
.cf-input:focus,.cf-select:focus,.cf-textarea:focus{outline:2px solid var(--cf-forest-light);outline-offset:1px;border-color:var(--cf-forest-light)}
.cf-input:disabled,.cf-select:disabled,.cf-textarea:disabled{opacity:.5;background:var(--cf-mist)}
.cf-field-error{color:var(--cf-danger);font-size:var(--cf-text-xs);font-weight:var(--cf-weight-medium)}
.cf-checkbox,.cf-switch{display:inline-flex;align-items:center;gap:8px;min-height:44px}
.cf-switch-track{width:44px;height:26px;border-radius:var(--cf-radius-pill);background:var(--cf-stone);position:relative;transition:background var(--cf-duration-base) var(--cf-ease)}
.cf-switch-track::after{content:'';position:absolute;top:2px;left:2px;width:22px;height:22px;border-radius:50%;background:#fff;transition:transform var(--cf-duration-base) var(--cf-ease)}
.cf-switch input:checked + .cf-switch-track{background:var(--cf-forest)}
.cf-switch input:checked + .cf-switch-track::after{transform:translateX(18px)}
.cf-switch input{position:absolute;opacity:0;width:44px;height:26px;margin:0;cursor:pointer}

/* ---------- 6. CARDS ---------- */
.cf-card{border-radius:var(--cf-radius-lg);padding:var(--cf-space-5);background:#fff;box-shadow:var(--cf-shadow-sm)}
.cf-card-glass{--cf-ink:#f4faf5;--cf-muted:rgba(244,250,245,.68);--cf-line:rgba(244,250,245,.22);background:rgba(31,61,44,.44);border:1px solid rgba(255,255,255,.20);-webkit-backdrop-filter:blur(18px) saturate(130%);backdrop-filter:blur(18px) saturate(130%);box-shadow:0 12px 30px rgba(0,8,4,.28);color:#f4faf5}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.cf-card-glass{background:rgba(31,61,44,.85);color:#f4faf5}}
.cf-card-operational{--cf-ink:#f4faf5;--cf-muted:rgba(244,250,245,.68);--cf-line:rgba(244,250,245,.22);background:rgba(18,36,25,.58);border:1px solid rgba(255,255,255,.20);-webkit-backdrop-filter:blur(18px) saturate(130%);backdrop-filter:blur(18px) saturate(130%);box-shadow:0 12px 30px rgba(0,8,4,.28);color:#f4faf5}
.cf-card-metric{display:flex;flex-direction:column;gap:6px;min-height:110px}
.cf-card-metric .cf-metric-value{font-size:var(--cf-text-xl);font-weight:var(--cf-weight-bold)}
.cf-card-photo{padding:0;overflow:hidden;position:relative}
.cf-card-photo img{width:100%;height:100%;object-fit:cover}
.cf-card-photo .cf-card-caption{position:absolute;left:0;right:0;bottom:0;padding:var(--cf-space-3);background:linear-gradient(transparent,rgba(0,0,0,.55));color:#fff;font-size:var(--cf-text-sm)}
.cf-card-timeline{display:flex;gap:var(--cf-space-3);align-items:flex-start}
.cf-card-timeline .cf-timeline-dot{width:12px;height:12px;border-radius:50%;background:var(--cf-forest);margin-top:6px;flex:none}
.cf-card-action{display:flex;align-items:center;justify-content:space-between;gap:var(--cf-space-3);text-decoration:none;color:inherit}
.cf-card-section{padding-bottom:var(--cf-space-2)}
.cf-card-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--cf-space-3)}

/* ---------- 7. STATUS BADGES ---------- */
.cf-badge{display:inline-flex;align-items:center;gap:5px;font-size:var(--cf-text-xs);font-weight:var(--cf-weight-bold);padding:5px 10px;border-radius:var(--cf-radius-pill);white-space:nowrap}
.cf-badge-success{background:rgba(143,216,172,.18);color:#8fd8ac}
.cf-badge-warning{background:rgba(240,204,143,.20);color:#f0cc8f}
.cf-badge-pending{background:rgba(240,204,143,.20);color:#f0cc8f}
.cf-badge-danger{background:rgba(242,152,138,.18);color:#f2988a}
.cf-badge-reserved{background:rgba(242,152,138,.18);color:#f2988a}
.cf-badge-confirmed{background:rgba(168,201,234,.18);color:#a8c9ea}
.cf-badge-completed{background:rgba(244,250,245,.14);color:rgba(244,250,245,.78)}
.cf-badge-cancelled{background:rgba(244,250,245,.14);color:rgba(244,250,245,.55);text-decoration:line-through}
.cf-badge-draft{background:rgba(244,250,245,.14);color:rgba(244,250,245,.78)}
.cf-badge-approved{background:rgba(143,216,172,.18);color:#8fd8ac}
.cf-badge-clarification{background:rgba(242,152,138,.18);color:#f2988a}
.cf-badge-paperwork{background:rgba(240,204,143,.20);color:#f0cc8f}
.cf-badge-enquiry{background:rgba(244,250,245,.14);color:rgba(244,250,245,.78)}
.cf-badge-offered{background:rgba(240,204,143,.20);color:#f0cc8f}
.cf-badge-inhouse{background:rgba(201,138,58,.22);color:#e0a862}

/* ---------- 8. HERO BANNER ---------- */
.cf-hero{position:relative;border-radius:0 0 var(--cf-radius-xl) var(--cf-radius-xl);overflow:hidden;padding:var(--cf-space-6) var(--cf-space-5) var(--cf-space-8);color:#fff;background-size:cover;background-position:center}
.cf-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(rgba(10,14,10,.15),rgba(8,12,8,.72));z-index:0}
.cf-hero>*{position:relative;z-index:1}

/* ---------- 9. EMPTY / LOADING STATES ---------- */
.cf-empty{text-align:center;color:var(--cf-muted);font-size:var(--cf-text-sm);padding:var(--cf-space-8) var(--cf-space-4)}
.cf-empty-icon{font-size:32px;margin-bottom:var(--cf-space-2);opacity:.5}
.cf-loading{display:inline-block;width:20px;height:20px;border:2.5px solid var(--cf-line);border-top-color:var(--cf-forest);border-radius:50%;animation:cf-spin .8s linear infinite}
@keyframes cf-spin{to{transform:rotate(360deg)}}
.cf-skeleton{background:linear-gradient(90deg,var(--cf-mist) 25%,#f2f2ee 37%,var(--cf-mist) 63%);background-size:400% 100%;animation:cf-shimmer 1.4s ease infinite;border-radius:var(--cf-radius-md)}
@keyframes cf-shimmer{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 10. TOAST NOTIFICATIONS ---------- */
.cf-toast{position:fixed;left:50%;bottom:calc(24px + var(--cf-safe-bottom));transform:translateX(-50%);background:var(--cf-ink);color:#fff;padding:12px 20px;border-radius:var(--cf-radius-pill);font-size:var(--cf-text-sm);font-weight:var(--cf-weight-medium);box-shadow:var(--cf-shadow-lg);z-index:80;max-width:90vw}
.cf-toast-success{background:var(--cf-success)}
.cf-toast-danger{background:var(--cf-danger)}

/* ---------- 11. MODAL WINDOW ---------- */
.cf-modal-backdrop{position:fixed;inset:0;background:rgba(10,14,10,.5);display:flex;align-items:center;justify-content:center;padding:var(--cf-space-4);z-index:90}
.cf-modal{width:min(480px,100%);max-height:86vh;overflow-y:auto;background:#fff;border-radius:var(--cf-radius-xl);padding:var(--cf-space-6);box-shadow:var(--cf-shadow-lg)}
.cf-modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--cf-space-4)}

/* ---------- 12. BOTTOM SHEET ---------- */
.cf-sheet-backdrop{position:fixed;inset:0;background:rgba(10,14,10,.4);z-index:90}
.cf-sheet{position:fixed;left:0;right:0;bottom:0;background:#fff;border-radius:var(--cf-radius-xl) var(--cf-radius-xl) 0 0;padding:var(--cf-space-5) var(--cf-space-5) calc(var(--cf-space-5) + var(--cf-safe-bottom));box-shadow:var(--cf-shadow-lg);z-index:91;max-height:80vh;overflow-y:auto}
.cf-sheet-handle{width:40px;height:4px;border-radius:var(--cf-radius-pill);background:var(--cf-line);margin:0 auto var(--cf-space-4)}

/* ---------- 13. FLOATING ACTION BUTTON ---------- */
/* see .cf-btn-floating in section 4 */

/* ---------- 14. NAVIGATION ---------- */
.cf-topbar{display:flex;align-items:center;justify-content:space-between;padding:var(--cf-space-3) var(--cf-space-4);background:rgba(255,255,255,.85);-webkit-backdrop-filter:blur(var(--cf-blur-sm));backdrop-filter:blur(var(--cf-blur-sm))}
.cf-tabbar{position:fixed;left:0;right:0;bottom:0;display:flex;justify-content:space-around;background:rgba(31,61,44,.82);-webkit-backdrop-filter:blur(var(--cf-blur-md));backdrop-filter:blur(var(--cf-blur-md));border-top:1px solid rgba(255,255,255,.15);border-top-left-radius:20px;border-top-right-radius:20px;padding:8px 6px calc(8px + var(--cf-safe-bottom));z-index:40}
.cf-tabbar a{display:flex;align-items:center;justify-content:center;padding:6px 2px;text-decoration:none;color:#c98a3a;font-family:'Caveat',cursive;font-size:22px;font-weight:700;min-height:44px}
.cf-tabbar a.cf-active{color:#f0cc8f}
.cf-tabbar a.cf-soon{opacity:.45;pointer-events:none}

/* ---------- 15. MOTION & ACCESSIBILITY ---------- */
.cf-focus-visible:focus-visible{outline:2px solid var(--cf-forest-light);outline-offset:2px}
@media (prefers-reduced-motion:reduce){
  .cf-root *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}