/* ============================================================
   MARHAM — Design System v1.0
   Modern Medical AI Platform
   ============================================================ */

/* ================= 1. FONT ================= */
@font-face{font-family:'Estedad';src:url('/fonts/Estedad-Variable.woff2') format('woff2-variations');font-weight:100 900;font-display:swap}

/* ================= 2. DESIGN TOKENS ================= */
:root{
  /* Brand */
  --primary:#6366F1;--primary-hover:#4F46E5;--primary-soft:rgba(99,102,241,.12);
  --cyan:#22D3EE;--cyan-soft:rgba(34,211,238,.12);
  --violet:#A855F7;--violet-soft:rgba(168,85,247,.12);
  --mint:#10B981;--mint-soft:rgba(16,185,129,.12);
  --amber:#F59E0B;--amber-soft:rgba(245,158,11,.12);
  --rose:#F43F5E;--rose-soft:rgba(244,63,94,.12);

  /* Gradients */
  --grad-brand:linear-gradient(135deg,#6366F1 0%,#22D3EE 100%);
  --grad-violet:linear-gradient(135deg,#A855F7 0%,#6366F1 100%);
  --grad-warm:linear-gradient(135deg,#F59E0B 0%,#F43F5E 100%);
  --grad-health:linear-gradient(135deg,#10B981 0%,#22D3EE 100%);
  --grad-text:linear-gradient(135deg,#6366F1 0%,#22D3EE 50%,#A855F7 100%);

  /* Radii */
  --r-xs:6px;--r-sm:10px;--r-md:14px;--r-lg:18px;--r-xl:24px;--r-2xl:32px;--r-full:9999px;

  /* Spacing (8px grid) */
  --s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:20px;--s-6:24px;--s-8:32px;--s-10:40px;--s-12:48px;--s-16:64px;--s-20:80px;

  /* Typography */
  --fs-xs:12px;--fs-sm:13px;--fs-base:15px;--fs-md:16px;--fs-lg:18px;--fs-xl:22px;--fs-2xl:28px;--fs-3xl:36px;--fs-4xl:48px;--fs-5xl:64px;

  /* Easing */
  --ease:cubic-bezier(0.16,1,0.3,1);--ease-spring:cubic-bezier(0.34,1.56,0.64,1);--dur:.3s;

  /* Dark mode (default) */
  --bg:#080B1F;--bg-2:#0C1129;--surface:#101634;--surface-2:#171D42;--surface-3:#1E2550;
  --border:rgba(255,255,255,.08);--border-strong:rgba(255,255,255,.15);
  --text:#F1F5F9;--text-2:#94A3B8;--text-3:#64748B;--text-inverse:#0A0E27;

  /* Shadows */
  --sh-sm:0 1px 2px rgba(0,0,0,.2);
  --sh-md:0 4px 16px rgba(0,0,0,.25);
  --sh-lg:0 12px 40px rgba(0,0,0,.3);
  --sh-glow:0 0 40px rgba(99,102,241,.35);
  --sh-glow-cyan:0 0 40px rgba(34,211,238,.35);

  /* Layout */
  --container:1280px;--header-h:72px;--sidebar-w:260px;
}

/* Light mode override */
[data-theme="light"]{
  --bg:#FAFBFF;--bg-2:#F4F6FC;--surface:#FFFFFF;--surface-2:#F8FAFC;--surface-3:#EEF2F9;
  --border:rgba(15,23,42,.08);--border-strong:rgba(15,23,42,.15);
  --text:#0A0E27;--text-2:#475569;--text-3:#94A3B8;--text-inverse:#F1F5F9;
  --sh-md:0 4px 16px rgba(15,23,42,.06);
  --sh-lg:0 12px 40px rgba(15,23,42,.08);
}

/* ================= 3. RESET & BASE ================= */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{direction:rtl;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}
body{font-family:'Estedad',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;min-height:100vh;transition:background .3s,color .3s}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
ul,ol{list-style:none}
::selection{background:var(--primary);color:#fff}

/* Scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-2)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),var(--cyan));border-radius:10px}

/* ================= 4. TYPOGRAPHY ================= */
h1,h2,h3,h4,h5,h6{font-weight:800;line-height:1.25;letter-spacing:-0.02em;color:var(--text)}
h1{font-size:var(--fs-4xl)}h2{font-size:var(--fs-3xl)}h3{font-size:var(--fs-2xl)}
h4{font-size:var(--fs-xl)}h5{font-size:var(--fs-lg)}h6{font-size:var(--fs-md)}
p{color:var(--text-2);line-height:1.8}

.display-1{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;line-height:1.05;letter-spacing:-0.03em}
.display-2{font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.1;letter-spacing:-0.02em}
.lead{font-size:var(--fs-lg);color:var(--text-2);line-height:1.8}
.text-muted{color:var(--text-2)}
.text-dim{color:var(--text-3)}
.text-gradient{background:var(--grad-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ================= 5. BACKGROUNDS ================= */
.bg-aurora{position:relative;background:var(--bg);overflow:hidden}
.bg-aurora::before{content:'';position:absolute;inset:0;background:
  radial-gradient(at 20% 20%,rgba(99,102,241,.35) 0px,transparent 50%),
  radial-gradient(at 80% 10%,rgba(34,211,238,.25) 0px,transparent 50%),
  radial-gradient(at 60% 90%,rgba(168,85,247,.2) 0px,transparent 50%),
  radial-gradient(at 10% 80%,rgba(16,185,129,.15) 0px,transparent 50%);
  animation:aurora 20s ease-in-out infinite;pointer-events:none}
@keyframes aurora{0%,100%{opacity:.9;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}

.bg-grid{position:relative}
.bg-grid::before{content:'';position:absolute;inset:0;background-image:
  linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:60px 60px;pointer-events:none}
[data-theme="light"] .bg-grid::before{background-image:
  linear-gradient(rgba(15,23,42,.03) 1px,transparent 1px),
  linear-gradient(90deg,rgba(15,23,42,.03) 1px,transparent 1px)}

.bg-noise{position:relative}
.bg-noise::after{content:'';position:absolute;inset:0;pointer-events:none;opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4;pointer-events:none;animation:float 8s ease-in-out infinite}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(30px,-30px) scale(1.1)}66%{transform:translate(-20px,20px) scale(.95)}}

/* ================= 6. LAYOUT ================= */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--s-6)}
.section{padding-block:var(--s-16)}
.grid{display:grid;gap:var(--s-6)}
.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-2{gap:var(--s-2)}.gap-3{gap:var(--s-3)}.gap-4{gap:var(--s-4)}.gap-6{gap:var(--s-6)}

/* ================= 7. BUTTONS ================= */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);
  padding:12px 24px;border-radius:var(--r-md);font-weight:700;font-size:var(--fs-base);
  cursor:pointer;border:none;transition:all var(--dur) var(--ease);position:relative;overflow:hidden;white-space:nowrap}
.btn:disabled{opacity:.5;cursor:not-allowed}

.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 4px 20px rgba(99,102,241,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(99,102,241,.5)}

.btn-secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--surface-3);border-color:var(--border-strong);transform:translateY(-2px)}

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

.btn-success{background:var(--grad-health);color:#fff}
.btn-danger{background:linear-gradient(135deg,#F43F5E 0%,#E11D48 100%);color:#fff}

.btn-sm{padding:8px 16px;font-size:var(--fs-sm);border-radius:var(--r-sm)}
.btn-lg{padding:16px 32px;font-size:var(--fs-md);border-radius:var(--r-lg)}
.btn-icon{width:42px;height:42px;padding:0;border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--border)}
.btn-icon:hover{background:var(--surface-3)}
.btn-block{width:100%}

/* Shine effect */
.btn-shine::before{content:'';position:absolute;top:0;left:-100%;width:60%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);
  transform:skewX(-20deg);transition:left .8s var(--ease)}
.btn-shine:hover::before{left:150%}

/* ================= 8. CARDS ================= */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:var(--s-6);transition:all var(--dur) var(--ease)}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--border-strong)}

.card-glass{background:rgba(255,255,255,.04);backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-lg);padding:var(--s-6)}
[data-theme="light"] .card-glass{background:rgba(255,255,255,.7);border-color:rgba(15,23,42,.06)}

.card-gradient{background:var(--surface);border-radius:var(--r-lg);padding:var(--s-6);position:relative;overflow:hidden}
.card-gradient::before{content:'';position:absolute;top:0;right:0;left:0;height:3px;background:var(--grad-brand)}

.card-elevated{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:var(--s-6);box-shadow:var(--sh-md)}

/* ================= 9. FORMS ================= */
.form-group{margin-bottom:var(--s-5)}
.label{display:block;font-size:var(--fs-sm);font-weight:600;color:var(--text-2);margin-bottom:var(--s-2)}

.input,.textarea,.select{width:100%;padding:14px 18px;background:var(--surface-2);
  border:1.5px solid var(--border);border-radius:var(--r-md);color:var(--text);
  font-size:var(--fs-base);transition:all var(--dur) var(--ease);outline:none}
.input:focus,.textarea:focus,.select:focus{border-color:var(--primary);background:var(--surface);
  box-shadow:0 0 0 4px var(--primary-soft)}
.input::placeholder,.textarea::placeholder{color:var(--text-3)}
.textarea{min-height:120px;resize:vertical;font-family:inherit}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:left 16px center;padding-left:44px}

.input-icon{position:relative}
.input-icon .input{padding-right:48px}
.input-icon > svg{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-3);pointer-events:none}

/* Floating label */
.input-floating{position:relative}
.input-floating .input{padding-top:22px;padding-bottom:8px}
.input-floating label{position:absolute;right:18px;top:16px;color:var(--text-3);font-size:var(--fs-base);
  pointer-events:none;transition:all .2s var(--ease)}
.input-floating .input:focus + label,.input-floating .input:not(:placeholder-shown) + label{
  top:6px;font-size:var(--fs-xs);color:var(--primary);font-weight:600}

/* Checkbox & Radio */
.checkbox,.radio{display:flex;align-items:center;gap:var(--s-2);cursor:pointer;user-select:none}
.checkbox input,.radio input{appearance:none;width:20px;height:20px;border:1.5px solid var(--border-strong);
  border-radius:var(--r-xs);position:relative;cursor:pointer;transition:all .2s}
.radio input{border-radius:50%}
.checkbox input:checked,.radio input:checked{background:var(--primary);border-color:var(--primary)}
.checkbox input:checked::after{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/14px no-repeat}

/* Switch */
.switch{position:relative;display:inline-block;width:48px;height:26px}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;cursor:pointer;inset:0;background:var(--surface-3);border-radius:999px;transition:.3s}
.switch span::before{content:'';position:absolute;height:20px;width:20px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.3s}
.switch input:checked + span{background:var(--primary)}
.switch input:checked + span::before{transform:translateX(22px)}

/* ================= 10. BADGES & CHIPS ================= */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-full);
  font-size:var(--fs-xs);font-weight:700;letter-spacing:.01em}
.badge-primary{background:var(--primary-soft);color:var(--primary)}
.badge-cyan{background:var(--cyan-soft);color:var(--cyan)}
.badge-mint{background:var(--mint-soft);color:var(--mint)}
.badge-amber{background:var(--amber-soft);color:var(--amber)}
.badge-rose{background:var(--rose-soft);color:var(--rose)}
.badge-violet{background:var(--violet-soft);color:var(--violet)}

.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--r-full);
  background:var(--surface-2);border:1px solid var(--border);font-size:var(--fs-sm);font-weight:600;transition:all .2s}
.chip:hover{background:var(--surface-3);border-color:var(--border-strong)}
.chip-active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Status dot */
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot-live{background:var(--mint);box-shadow:0 0 0 4px var(--mint-soft);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px var(--mint-soft)}50%{box-shadow:0 0 0 8px transparent}}

/* ================= 11. AVATARS ================= */
.avatar{width:44px;height:44px;border-radius:var(--r-md);display:inline-flex;align-items:center;
  justify-content:center;font-weight:800;color:#fff;background:var(--grad-brand);font-size:var(--fs-md);flex-shrink:0}
.avatar-sm{width:32px;height:32px;font-size:var(--fs-sm);border-radius:var(--r-sm)}
.avatar-lg{width:64px;height:64px;font-size:var(--fs-xl);border-radius:var(--r-lg)}
.avatar-xl{width:96px;height:96px;font-size:var(--fs-3xl);border-radius:var(--r-xl)}

/* ================= 12. TABLES ================= */
.table-modern{width:100%;border-collapse:separate;border-spacing:0}
.table-modern thead th{text-align:right;padding:14px 16px;font-size:var(--fs-sm);font-weight:700;
  color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border);background:var(--surface-2)}
.table-modern tbody td{padding:16px;border-bottom:1px solid var(--border);font-size:var(--fs-base);color:var(--text)}
.table-modern tbody tr{transition:background .2s}
.table-modern tbody tr:hover{background:var(--surface-2)}
.table-modern tbody tr:last-child td{border-bottom:none}

/* ================= 13. CHAT UI ================= */
.chat-container{display:flex;flex-direction:column;height:100%;background:var(--bg);border-radius:var(--r-lg);overflow:hidden}
.chat-messages{flex:1;overflow-y:auto;padding:var(--s-6);display:flex;flex-direction:column;gap:var(--s-4)}
.chat-bubble{max-width:75%;padding:12px 16px;border-radius:var(--r-lg);font-size:var(--fs-base);line-height:1.7;
  animation:slideIn .4s var(--ease-spring)}
.chat-bubble-user{align-self:flex-start;background:var(--grad-brand);color:#fff;border-bottom-left-radius:4px}
.chat-bubble-ai{align-self:flex-end;background:var(--surface-2);border:1px solid var(--border);border-bottom-right-radius:4px}
.chat-bubble-system{align-self:center;background:var(--surface-3);font-size:var(--fs-sm);color:var(--text-2);padding:8px 16px;border-radius:var(--r-full)}
@keyframes slideIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

.chat-typing{display:inline-flex;gap:4px;padding:14px 18px;background:var(--surface-2);border-radius:var(--r-lg);width:fit-content}
.chat-typing span{width:8px;height:8px;border-radius:50%;background:var(--text-3);animation:bounce 1.4s infinite}
.chat-typing span:nth-child(2){animation-delay:.2s}
.chat-typing span:nth-child(3){animation-delay:.4s}
@keyframes bounce{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-8px);opacity:1}}

.chat-input-bar{padding:var(--s-4);border-top:1px solid var(--border);background:var(--surface);display:flex;gap:var(--s-2);align-items:center}
.chat-input{flex:1;padding:12px 18px;border-radius:var(--r-full);border:1.5px solid var(--border);
  background:var(--surface-2);outline:none;transition:all .2s}
.chat-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft)}

/* ================= 14. STATS ================= */
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:var(--s-5);
  position:relative;overflow:hidden;transition:all .3s}
.stat-card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
.stat-card::before{content:'';position:absolute;top:0;right:0;width:80px;height:80px;border-radius:50%;
  background:var(--grad-brand);opacity:.08;filter:blur(20px);transform:translate(30%,-30%)}
.stat-icon{width:44px;height:44px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-size:22px;margin-bottom:var(--s-3)}
.stat-value{font-size:var(--fs-3xl);font-weight:900;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-label{font-size:var(--fs-sm);color:var(--text-2);margin-top:var(--s-1)}
.stat-trend{display:inline-flex;align-items:center;gap:4px;font-size:var(--fs-xs);font-weight:700;margin-top:var(--s-2)}
.stat-trend-up{color:var(--mint)}
.stat-trend-down{color:var(--rose)}

/* ================= 15. NAVIGATION ================= */
.navbar{position:sticky;top:0;z-index:50;background:rgba(10,14,39,.7);backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:var(--s-4) 0}
[data-theme="light"] .navbar{background:rgba(255,255,255,.75)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s-6)}
.nav-logo{display:flex;align-items:center;gap:var(--s-3);font-weight:800;font-size:var(--fs-lg)}
.nav-logo-mark{width:40px;height:40px;border-radius:var(--r-md);background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;box-shadow:var(--sh-glow)}
.nav-menu{display:flex;gap:var(--s-1);align-items:center}
.nav-link{padding:10px 16px;border-radius:var(--r-md);font-size:var(--fs-sm);font-weight:600;
  color:var(--text-2);transition:all .2s;position:relative}
.nav-link:hover{color:var(--text);background:var(--surface-2)}
.nav-link.active{color:var(--primary);background:var(--primary-soft)}

/* Sidebar */
.sidebar{width:var(--sidebar-w);height:100vh;background:var(--surface);border-left:1px solid var(--border);
  padding:var(--s-5);display:flex;flex-direction:column;gap:var(--s-2);position:fixed;right:0;top:0;overflow-y:auto;z-index:40}
.sidebar-link{display:flex;align-items:center;gap:var(--s-3);padding:12px 16px;border-radius:var(--r-md);
  color:var(--text-2);font-weight:600;font-size:var(--fs-sm);transition:all .2s}
.sidebar-link:hover{background:var(--surface-2);color:var(--text)}
.sidebar-link.active{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-glow)}

/* ================= 16. MODALS ================= */
.modal-backdrop{position:fixed;inset:0;background:rgba(8,11,31,.7);backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100;
  padding:var(--s-4);animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);padding:var(--s-8);
  width:100%;max-width:520px;box-shadow:var(--sh-lg);animation:scaleIn .3s var(--ease-spring)}
@keyframes scaleIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}

/* ================= 17. ALERTS & TOASTS ================= */
.alert{padding:var(--s-4) var(--s-5);border-radius:var(--r-md);border:1px solid;display:flex;gap:var(--s-3);align-items:flex-start}
.alert-primary{background:var(--primary-soft);border-color:rgba(99,102,241,.3);color:var(--primary)}
.alert-success{background:var(--mint-soft);border-color:rgba(16,185,129,.3);color:var(--mint)}
.alert-warning{background:var(--amber-soft);border-color:rgba(245,158,11,.3);color:var(--amber)}
.alert-danger{background:var(--rose-soft);border-color:rgba(244,63,94,.3);color:var(--rose)}

.toast-stack{position:fixed;bottom:var(--s-6);left:var(--s-6);z-index:200;display:flex;flex-direction:column;gap:var(--s-3);max-width:380px}
.toast{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:var(--s-4) var(--s-5);
  box-shadow:var(--sh-lg);display:flex;gap:var(--s-3);align-items:center;animation:toastIn .3s var(--ease-spring)}
@keyframes toastIn{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:translateX(0)}}

/* ================= 18. PROGRESS ================= */
.progress{height:8px;background:var(--surface-3);border-radius:var(--r-full);overflow:hidden}
.progress-bar{height:100%;background:var(--grad-brand);border-radius:inherit;transition:width .4s var(--ease)}

/* ================= 19. SCROLL ANIMATIONS ================= */
[data-animate]{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
[data-animate="left"]{transform:translateX(40px)}
[data-animate="right"]{transform:translateX(-40px)}
[data-animate="scale"]{transform:scale(.95)}
[data-animate].is-visible{opacity:1;transform:translate(0,0) scale(1)}
[data-delay="100"]{transition-delay:.1s}[data-delay="200"]{transition-delay:.2s}
[data-delay="300"]{transition-delay:.3s}[data-delay="400"]{transition-delay:.4s}

/* ================= 20. UTILITIES ================= */
.glass{background:rgba(255,255,255,.06);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.08)}
[data-theme="light"] .glass{background:rgba(255,255,255,.7);border-color:rgba(15,23,42,.06)}
.glow{box-shadow:var(--sh-glow)}
.glow-cyan{box-shadow:var(--sh-glow-cyan)}
.rounded-full{border-radius:var(--r-full)}
.rounded-lg{border-radius:var(--r-lg)}
.text-center{text-align:center}
.w-full{width:100%}.h-full{height:100%}
.mt-2{margin-top:var(--s-2)}.mt-4{margin-top:var(--s-4)}.mt-6{margin-top:var(--s-6)}.mt-8{margin-top:var(--s-8)}
.mb-4{margin-bottom:var(--s-4)}.mb-6{margin-bottom:var(--s-6)}.mb-8{margin-bottom:var(--s-8)}
.hidden{display:none}

/* ================= 21. RESPONSIVE ================= */
@media(max-width:1024px){
  .sidebar{transform:translateX(100%);transition:transform .3s}
  .sidebar.open{transform:translateX(0)}
}
@media(max-width:768px){
  :root{--fs-4xl:32px;--fs-3xl:26px;--fs-2xl:22px;--fs-5xl:40px}
  .container{padding-inline:var(--s-4)}
  .section{padding-block:var(--s-10)}
  .chat-bubble{max-width:88%}
}