/* ═══════════════════════════════════════════════════════
   WHITLEAF AI — styles.css
   Light-blue + white | 3D glass cards | Fully responsive
   Works on Hostinger shared hosting (static HTML)
   ═══════════════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  --font-body:    'Satoshi',       system-ui, sans-serif;
  --font-display: 'Clash Display', 'Satoshi', system-ui, sans-serif;

  /* Fluid type */
  --tx-xs:   clamp(0.72rem,  0.68rem + 0.2vw,  0.85rem);
  --tx-sm:   clamp(0.85rem,  0.8rem  + 0.3vw,  1rem);
  --tx-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --tx-lg:   clamp(1.1rem,   0.95rem + 0.8vw,  1.5rem);
  --tx-xl:   clamp(1.5rem,   1.1rem  + 1.3vw,  2.25rem);
  --tx-2xl:  clamp(2rem,     1rem    + 2.8vw,  3.6rem);
  --tx-hero: clamp(2.5rem,   0.6rem  + 6.5vw,  6rem);

  /* Spacing */
  --sp-1:2px; --sp-2:4px; --sp-3:8px; --sp-4:12px; --sp-5:16px;
  --sp-6:20px; --sp-7:24px; --sp-8:32px; --sp-10:40px;
  --sp-12:48px; --sp-16:64px; --sp-20:80px; --sp-24:96px;

  /* Colours – light */
  --bg:           #f3f9ff;
  --bg-alt:       #e8f4ff;
  --surface:      #ffffff;
  --surface-up:   #f0f7ff;
  --surface-glass:rgba(255,255,255,0.72);
  --border:       rgba(14,90,170,0.12);
  --divider:      rgba(14,90,170,0.07);

  --ink:          #071e38;
  --ink-muted:    #3f5f7f;
  --ink-faint:    #7496b4;
  --on-primary:   #ffffff;

  --blue:         #2f80ed;
  --blue-dark:    #1d67ca;
  --blue-soft:    rgba(47,128,237,0.12);
  --blue-glow:    rgba(47,128,237,0.30);
  --sky:          #8fd3ff;

  /* Shadows */
  --sh-xs: 0 2px 8px  rgba(20,80,160,0.07);
  --sh-sm: 0 6px 24px rgba(20,80,160,0.10);
  --sh-md: 0 14px 48px rgba(20,80,160,0.14);
  --sh-lg: 0 28px 80px rgba(20,80,160,0.19);
  --sh-glow: 0 0 56px  rgba(47,128,237,0.22);

  /* Radii */
  --r-sm: 8px; --r-md: 12px; --r-lg: 18px;
  --r-xl: 24px; --r-2xl: 32px; --r-full: 9999px;

  --ease: cubic-bezier(0.16,1,0.3,1);
  --dur: 220ms;
  --max-w: 1180px;
  --sec-y: clamp(64px, 9vw, 96px);
}

/* Dark theme overrides */
[data-theme="dark"] {
  --bg:           #060e18;
  --bg-alt:       #0a1827;
  --surface:      #0d1c2e;
  --surface-up:   #132540;
  --surface-glass:rgba(13,28,46,0.82);
  --border:       rgba(143,211,255,0.12);
  --divider:      rgba(143,211,255,0.07);
  --ink:          #e5f3ff;
  --ink-muted:    #8ab4d0;
  --ink-faint:    #527a98;
  --blue:         #60b0ff;
  --blue-dark:    #3e8fe0;
  --blue-soft:    rgba(96,176,255,0.14);
  --blue-glow:    rgba(96,176,255,0.28);
  --sky:          #a8daff;
  --sh-xs: 0 2px 8px  rgba(0,0,0,0.28);
  --sh-sm: 0 6px 24px rgba(0,0,0,0.36);
  --sh-md: 0 14px 48px rgba(0,0,0,0.44);
  --sh-lg: 0 28px 80px rgba(0,0,0,0.56);
}

/* ── RESET ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  font-size:var(--tx-base);
  line-height:1.65;
  color:var(--ink);
  background-color:var(--bg);
  background-image:
    radial-gradient(circle at 10% 8%,  rgba(143,211,255,0.38) 0%, transparent 28%),
    radial-gradient(circle at 90% 15%, rgba(47,128,237,0.15)  0%, transparent 22%),
    radial-gradient(circle at 50% 98%, rgba(47,128,237,0.10)  0%, transparent 30%);
  overflow-x:hidden;
  transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
/* dot-grid */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(circle, rgba(47,128,237,0.13) 1px, transparent 1px);
  background-size:38px 38px;
  mask-image:radial-gradient(circle at center, black 30%, transparent 75%);
  opacity:.5;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4{line-height:1.08;color:var(--ink)}
h1{font-family:var(--font-display);font-size:var(--tx-hero)}
h2{font-family:var(--font-display);font-size:var(--tx-2xl)}
h3{font-size:var(--tx-lg)}
p{color:var(--ink-muted);max-width:60ch}
ul{list-style:none}

/* ── SKIP LINK ── */
.skip-link{
  position:absolute;top:12px;left:-9999px;
  background:var(--blue);color:#fff;
  padding:8px 16px;border-radius:var(--r-full);
  font-size:var(--tx-sm);font-weight:700;z-index:9999;
}
.skip-link:focus{left:12px}

/* ── LAYOUT ── */
.container{
  width:min(calc(100% - 2rem), var(--max-w));
  margin-inline:auto;
  position:relative;z-index:1;
}
section{padding:var(--sec-y) 0}
.section-alt{
  background:linear-gradient(180deg, var(--bg-alt), var(--bg));
  border-top:1px solid var(--divider);
  border-bottom:1px solid var(--divider);
}

/* two-column grid */
.two-col{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:clamp(32px,4vw,64px);
  align-items:start;
}

/* ── HEADER ── */
.site-header{
  position:sticky;top:0;z-index:200;
  backdrop-filter:blur(22px) saturate(1.5);
  -webkit-backdrop-filter:blur(22px) saturate(1.5);
  background:var(--surface-glass);
  border-bottom:1px solid var(--divider);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.scrolled{box-shadow:var(--sh-md)}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding-block:14px;
}

/* brand */
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(145deg,var(--surface),var(--surface-up));
  border:1px solid var(--border);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.6), var(--sh-sm);
  display:grid;place-items:center;
  color:var(--blue);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.brand-mark:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.brand-mark svg{width:24px;height:24px}
.brand-text strong{display:block;font-family:var(--font-display);font-size:var(--tx-lg);line-height:1.1;color:var(--ink)}
.brand-text span{display:block;font-size:var(--tx-xs);color:var(--ink-faint)}

/* nav links */
.nav-links{display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.nav-links a{
  font-size:var(--tx-sm);color:var(--ink-muted);
  position:relative;padding-bottom:3px;
  transition:color var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;inset:auto 0 0 0;height:2px;
  background:var(--blue);border-radius:var(--r-full);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}

/* nav actions */
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.menu-btn,.theme-btn{
  width:42px;height:42px;border-radius:var(--r-full);
  border:1px solid var(--border);background:var(--surface);
  box-shadow:var(--sh-xs);display:grid;place-items:center;
  color:var(--blue);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.menu-btn:hover,.theme-btn:hover{transform:translateY(-2px);box-shadow:var(--sh-sm)}
.menu-btn{display:none}

/* ── BUTTONS ── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--r-full);
  font-size:var(--tx-sm);font-weight:700;line-height:1;
  white-space:nowrap;
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn:disabled{opacity:.55;pointer-events:none}
.btn-lg{min-height:52px;padding:0 28px;font-size:var(--tx-base)}

.btn-primary{
  background:linear-gradient(135deg,var(--blue),color-mix(in srgb,var(--blue) 78%,white));
  color:var(--on-primary);
  box-shadow:0 8px 28px var(--blue-glow);
}
.btn-primary:hover{box-shadow:0 14px 44px var(--blue-glow)}

.btn-outline{
  background:transparent;color:var(--blue);
  border:1.5px solid color-mix(in srgb,var(--blue) 38%,transparent);
}
.btn-outline:hover{background:var(--blue-soft)}

.btn-ghost{
  background:transparent;color:var(--ink-muted);
  border:1px solid var(--border);
}
.btn-ghost:hover{background:var(--surface-up);color:var(--ink)}

/* ── EYEBROW ── */
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:var(--r-full);
  background:var(--blue-soft);color:var(--blue);
  font-size:var(--tx-xs);font-weight:700;
  letter-spacing:.05em;text-transform:uppercase;
  border:1px solid color-mix(in srgb,var(--blue) 22%,transparent);
}

/* ── HERO ── */
.hero{padding-bottom:0}
.hero-grid{
  display:grid;grid-template-columns:1.05fr 0.95fr;
  gap:clamp(32px,4vw,64px);align-items:center;
  min-height:calc(100vh - 76px);
  padding-bottom:var(--sp-20);
}
.hero-copy{display:grid;gap:20px}
.hero-copy h1{max-width:13ch}
.hero-sub{font-size:var(--tx-lg);max-width:38ch}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap}
.hero-note{
  display:flex;align-items:center;gap:7px;
  font-size:var(--tx-sm);color:var(--ink-faint);
}
.hero-note i{width:15px;height:15px;color:var(--blue)}

/* stats strip */
.stats-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  margin-top:8px;
}
.stat-card{
  padding:16px 18px;border-radius:var(--r-lg);
  background:linear-gradient(145deg,var(--surface),var(--surface-up));
  border:1px solid var(--border);
  box-shadow:var(--sh-sm), inset 0 1px 0 rgba(255,255,255,0.55);
  transition:transform 120ms linear, box-shadow 120ms linear;
}
.stat-card strong{display:block;font-size:var(--tx-xl);color:var(--blue);line-height:1}
.stat-card span{display:block;font-size:var(--tx-xs);color:var(--ink-muted);margin-top:6px}

/* 3D canvas shell */
.hero-visual{display:grid;place-items:center}
.canvas-shell{
  width:min(100%,560px);aspect-ratio:1/1;
  border-radius:var(--r-2xl);
  background:linear-gradient(145deg,var(--surface),var(--bg-alt));
  border:1px solid var(--border);
  box-shadow:var(--sh-lg), var(--sh-glow),
             inset 0 1px 0 rgba(255,255,255,0.65);
  overflow:hidden;position:relative;
  animation:shellPulse 5s ease-in-out infinite;
}
.canvas-shell canvas{width:100%!important;height:100%!important;display:block}
@keyframes shellPulse{
  0%,100%{box-shadow:var(--sh-lg), var(--sh-glow), inset 0 1px 0 rgba(255,255,255,0.65)}
  50%{box-shadow:var(--sh-lg), 0 0 80px rgba(47,128,237,0.36), inset 0 1px 0 rgba(255,255,255,0.65)}
}

/* HUD overlay labels */
.hud{
  position:absolute;
  display:flex;align-items:center;gap:7px;
  padding:8px 12px;border-radius:var(--r-full);
  background:var(--surface-glass);
  border:1px solid var(--border);
  backdrop-filter:blur(10px);
  font-size:var(--tx-xs);font-weight:700;color:var(--ink);
  box-shadow:var(--sh-sm);
  animation:float 4s ease-in-out infinite;
  white-space:nowrap;
}
.hud i{width:14px;height:14px;color:var(--blue)}
.hud-tl{top:14px;left:14px;animation-delay:0s}
.hud-tr{top:14px;right:14px;animation-delay:1s}
.hud-bl{bottom:14px;left:14px;animation-delay:0.5s}
.hud-br{bottom:14px;right:14px;animation-delay:1.5s}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-6px)}
}

/* ── GLASS / 3D CARDS ── */
.card-3d{
  position:relative;isolation:isolate;
  padding:var(--sp-8);border-radius:var(--r-xl);
  background:linear-gradient(160deg,var(--surface) 0%,var(--surface-up) 100%);
  border:1px solid var(--border);
  box-shadow:var(--sh-md), inset 0 1px 0 rgba(255,255,255,0.55);
  transition:transform 120ms linear, box-shadow 120ms linear;
  overflow:hidden;
}
.card-3d::before{
  content:"";position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(145deg,rgba(255,255,255,0.2) 0%,transparent 55%);
  pointer-events:none;
}
.card-3d h2,.card-3d h3{margin-bottom:12px}
.card-3d p{margin-bottom:16px}

/* section-head */
.section-head{display:grid;gap:14px;margin-bottom:40px}
.section-head p{max-width:52ch}

/* sub-heading inside cards */
.sub-heading{font-size:var(--tx-base);font-weight:700;color:var(--ink);margin:24px 0 10px}

/* check list */
.check-list{display:grid;gap:10px}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:var(--tx-sm);color:var(--ink-muted);
}
.check-list li::before{
  content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;
  background:var(--blue);box-shadow:0 0 0 4px var(--blue-soft);
  margin-top:6px;
}

/* about badges */
.about-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.mini-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-full);
  background:var(--blue-soft);color:var(--blue);
  font-size:var(--tx-xs);font-weight:700;
  border:1px solid color-mix(in srgb,var(--blue) 22%,transparent);
}
.mini-badge i{width:13px;height:13px}

/* vision stack */
.vision-stack{display:grid;gap:16px}
.vision-card{
  display:flex;align-items:flex-start;gap:16px;
  padding:20px;border-radius:var(--r-lg);
  background:linear-gradient(145deg,var(--surface),var(--surface-up));
  border:1px solid var(--border);
  box-shadow:var(--sh-sm), inset 0 1px 0 rgba(255,255,255,0.55);
  transition:transform 120ms linear, box-shadow 120ms linear;
}
.vision-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md), var(--sh-glow)}
.vision-icon{
  width:48px;height:48px;flex-shrink:0;border-radius:14px;
  background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.7), var(--sh-xs);
}
.vision-icon i{width:22px;height:22px}
.vision-card h3{font-size:var(--tx-base);margin-bottom:6px}
.vision-card p{font-size:var(--tx-sm);max-width:none;margin:0}

/* ── STEPS GRID (solution) ── */
.steps-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.step-card{
  padding:28px 22px;border-radius:var(--r-xl);
  background:linear-gradient(160deg,var(--surface),var(--surface-up));
  border:1px solid var(--border);
  box-shadow:var(--sh-sm), inset 0 1px 0 rgba(255,255,255,0.55);
  position:relative;overflow:hidden;
  transition:transform 120ms linear, box-shadow 120ms linear;
}
.step-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(145deg,rgba(255,255,255,0.18) 0%,transparent 55%);
  pointer-events:none;
}
.step-num{
  font-family:var(--font-display);font-size:var(--tx-2xl);font-weight:700;
  color:var(--blue-soft);line-height:1;margin-bottom:12px;
  letter-spacing:-0.03em;
}
.step-icon{
  width:52px;height:52px;border-radius:15px;
  background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;margin-bottom:16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.7), var(--sh-xs);
}
.step-icon i{width:24px;height:24px}
.step-card h3{font-size:var(--tx-base);margin-bottom:8px}
.step-card p{font-size:var(--tx-sm);max-width:none}

/* ── FEATURE GRID ── */
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.feature-card{
  padding:28px;border-radius:var(--r-xl);
  background:linear-gradient(160deg,var(--surface),var(--surface-up));
  border:1px solid var(--border);
  box-shadow:var(--sh-sm), inset 0 1px 0 rgba(255,255,255,0.55);
  position:relative;overflow:hidden;
  transition:transform 120ms linear, box-shadow 120ms linear;
}
.feature-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(145deg,rgba(255,255,255,0.2) 0%,transparent 50%);
  pointer-events:none;
}
.feat-icon{
  width:54px;height:54px;border-radius:16px;
  background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;margin-bottom:16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.7), var(--sh-xs);
}
.feat-icon i{width:26px;height:26px}
.feature-card h3{font-size:var(--tx-base);margin-bottom:8px}
.feature-card p{font-size:var(--tx-sm);max-width:none}

/* ── CONTACT FORM ── */
.contact-card form{display:grid;gap:16px;margin-top:20px}
.field{display:grid;gap:6px}
label{font-size:var(--tx-sm);font-weight:700;color:var(--ink)}
input,textarea{
  width:100%;padding:12px 14px;
  border-radius:var(--r-md);
  border:1px solid var(--border);
  background:var(--surface);
  color:var(--ink);font:inherit;outline:none;
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
input::placeholder,textarea::placeholder{color:var(--ink-faint)}
input:focus,textarea:focus{
  border-color:color-mix(in srgb,var(--blue) 55%,transparent);
  box-shadow:0 0 0 4px var(--blue-soft);
}
textarea{min-height:150px;resize:vertical}
.form-success{
  display:none;align-items:center;gap:8px;
  font-size:var(--tx-sm);font-weight:700;color:var(--blue);
  padding:12px 16px;border-radius:var(--r-md);
  background:var(--blue-soft);border:1px solid color-mix(in srgb,var(--blue) 25%,transparent);
}
.form-success i{width:18px;height:18px}

/* ── SOCIALS ── */
.socials{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.social-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:var(--r-full);
  border:1px solid var(--border);background:var(--surface);
  font-size:var(--tx-sm);color:var(--ink-muted);
  box-shadow:var(--sh-xs);
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), color var(--dur) var(--ease);
}
.social-link:hover{transform:translateY(-2px);color:var(--blue);box-shadow:var(--sh-sm)}
.social-link i{width:16px;height:16px}

/* ── FOOTER ── */
.site-footer{
  padding:32px 0 48px;
  border-top:1px solid var(--divider);
  background:color-mix(in srgb,var(--surface) 72%,transparent);
  backdrop-filter:blur(14px);
}
.footer-inner{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
}
.footer-inner > p{font-size:var(--tx-sm);color:var(--ink-faint);max-width:none}
.footer-nav{display:flex;flex-wrap:wrap;gap:20px}
.footer-nav a{font-size:var(--tx-sm);color:var(--ink-muted);transition:color var(--dur) var(--ease)}
.footer-nav a:hover{color:var(--blue)}
.badge{
  padding:5px 12px;border-radius:var(--r-full);
  background:var(--blue-soft);color:var(--blue);
  font-size:var(--tx-xs);font-weight:700;
  border:1px solid color-mix(in srgb,var(--blue) 22%,transparent);
}

/* ── SCROLL REVEAL ── */
.reveal{
  opacity:0;transform:translateY(24px);
  transition:opacity 650ms var(--ease), transform 650ms var(--ease);
}
.reveal.visible{opacity:1;transform:translateY(0)}
/* stagger in grids */
.steps-grid   .step-card:nth-child(1){transition-delay:0ms}
.steps-grid   .step-card:nth-child(2){transition-delay:80ms}
.steps-grid   .step-card:nth-child(3){transition-delay:160ms}
.steps-grid   .step-card:nth-child(4){transition-delay:240ms}
.feature-grid .feature-card:nth-child(1){transition-delay:0ms}
.feature-grid .feature-card:nth-child(2){transition-delay:70ms}
.feature-grid .feature-card:nth-child(3){transition-delay:140ms}
.feature-grid .feature-card:nth-child(4){transition-delay:210ms}
.feature-grid .feature-card:nth-child(5){transition-delay:280ms}
.feature-grid .feature-card:nth-child(6){transition-delay:350ms}

/* ── RESPONSIVE ── */
@media(max-width:1100px){
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .canvas-shell{width:min(100%,480px)}
  .stats-strip{grid-template-columns:repeat(3,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr}
}
@media(max-width:700px){
  .menu-btn{display:grid}
  .nav-links{
    display:none;
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:flex-start;
    padding:20px 16px;gap:16px;
    background:var(--surface);
    border-bottom:1px solid var(--divider);
    box-shadow:var(--sh-md);
  }
  .nav-links.open{display:flex}
  .hero-grid{min-height:auto;padding-top:32px}
  .canvas-shell{width:100%}
  .hero-ctas{flex-direction:column;align-items:stretch}
  .stats-strip{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .hud-tr,.hud-br{display:none}
  .footer-inner{flex-direction:column;align-items:flex-start}
  h2{max-width:100%}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}