/* ══════════════════════════════════════════════════════════
   OpenGurukul Studio v2 — Design System
   Domain : studio.ivirth.com
   Font   : DM Sans
   Theme  : Light + Dark (black/white)
   ══════════════════════════════════════════════════════════ */
:root {
  --font:'DM Sans',system-ui,-apple-system,sans-serif;
  --bg:#fff;--bg2:#f6f6f6;--bg3:#efefef;--bg4:#e5e5e5;--surface:#fff;
  --border:#e2e2e2;--border2:#c8c8c8;
  --text:#0a0a0a;--text2:#3c3c3c;--text3:#707070;--text4:#a0a0a0;
  --ink:#0a0a0a;--ink-fg:#fff;
  --glow:rgba(0,0,0,.06);--glow2:rgba(0,0,0,.11);--overlay:rgba(0,0,0,.5);
  --sh-xs:0 1px 2px rgba(0,0,0,.05);
  --sh-sm:0 2px 8px rgba(0,0,0,.07);
  --sh:0 4px 20px rgba(0,0,0,.09);
  --sh-lg:0 12px 48px rgba(0,0,0,.12);
  --sh-xl:0 24px 80px rgba(0,0,0,.15);
  --r-xs:4px;--r-sm:8px;--r:12px;--r-lg:18px;--r-xl:24px;--r-full:9999px;
  --ease:cubic-bezier(.4,0,.2,1);--spring:cubic-bezier(.34,1.56,.64,1);
  --t:.18s;--t-md:.28s;
  --sidebar-w:260px;--header-h:60px;
}
[data-theme="dark"]{
  --bg:#080808;--bg2:#111;--bg3:#1c1c1c;--bg4:#252525;--surface:#111;
  --border:#282828;--border2:#3a3a3a;
  --text:#f2f2f2;--text2:#c4c4c4;--text3:#888;--text4:#555;
  --ink:#f2f2f2;--ink-fg:#080808;
  --glow:rgba(255,255,255,.05);--glow2:rgba(255,255,255,.09);--overlay:rgba(0,0,0,.72);
  --sh-xs:0 1px 2px rgba(0,0,0,.5);--sh-sm:0 2px 8px rgba(0,0,0,.5);
  --sh:0 4px 20px rgba(0,0,0,.5);--sh-lg:0 12px 48px rgba(0,0,0,.6);--sh-xl:0 24px 80px rgba(0,0,0,.7);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh;transition:background var(--t-md),color var(--t-md)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{cursor:pointer;font-family:var(--font);border:none;background:none}
input,textarea,select{font-family:var(--font)}
ul,ol{list-style:none}

/* ── Shell ── */
.app-shell{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:var(--header-h) 1fr;min-height:100vh}

/* ── Header ── */
.app-header{grid-column:1/-1;display:flex;align-items:center;gap:12px;padding:0 20px;height:var(--header-h);border-bottom:1px solid var(--border);background:rgba(255,255,255,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);position:sticky;top:0;z-index:300}
[data-theme="dark"] .app-header{background:rgba(8,8,8,.9)}
.header-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;letter-spacing:-.025em;flex-shrink:0;white-space:nowrap}
.logo-mark{width:32px;height:32px;background:var(--ink);color:var(--ink-fg);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:900;flex-shrink:0;transition:transform var(--t) var(--spring)}
.header-logo:hover .logo-mark{transform:rotate(-8deg) scale(1.1)}
.header-search{flex:1;max-width:440px;position:relative}
.header-search input{width:100%;height:38px;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r-full);padding:0 14px 0 40px;color:var(--text);font-size:.875rem;outline:none;transition:all var(--t)}
.header-search input:focus{border-color:var(--text3);box-shadow:0 0 0 3px var(--glow);background:var(--surface)}
.header-search input::placeholder{color:var(--text4)}
.search-ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--text4);pointer-events:none;display:flex}
.header-actions{display:flex;align-items:center;gap:6px;margin-left:auto}
.user-chip{display:flex;align-items:center;gap:8px;padding:4px 12px 4px 4px;border-radius:var(--r-full);border:1.5px solid var(--border);background:var(--bg2);transition:all var(--t);max-width:200px;cursor:pointer}
.user-chip:hover{background:var(--bg3);border-color:var(--border2)}
.user-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;flex-shrink:0}
.user-initial{width:28px;height:28px;border-radius:50%;background:var(--ink);color:var(--ink-fg);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;flex-shrink:0}
.user-name{font-size:.82rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.notif-dot{width:8px;height:8px;background:#e53e3e;border-radius:50%;position:absolute;top:6px;right:6px}

/* ── Sidebar ── */
.app-sidebar{grid-row:2;height:calc(100vh - var(--header-h));position:sticky;top:var(--header-h);background:var(--bg);border-right:1.5px solid var(--border);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--border) transparent;transition:transform var(--t-md) var(--ease);z-index:100}
.sidebar-inner{padding:10px 10px 24px;display:flex;flex-direction:column;min-height:100%}
.sidebar-section-lbl{font-size:.65rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--text4);padding:16px 10px 4px}
.sidebar-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--r);color:var(--text2);font-size:.875rem;font-weight:500;transition:all var(--t);white-space:nowrap;cursor:pointer;position:relative}
.sidebar-item:hover{background:var(--bg2);color:var(--text);transform:translateX(2px)}
.sidebar-item.active{background:var(--ink);color:var(--ink-fg);font-weight:600}
.sidebar-item.active:hover{transform:none}
.s-icon{width:20px;text-align:center;flex-shrink:0;font-size:15px}
.sidebar-divider{height:1px;background:var(--border);margin:10px 6px;border:none}
.sidebar-badge{margin-left:auto;font-size:.65rem;font-weight:700;padding:2px 6px;border-radius:var(--r-full);background:var(--bg3);color:var(--text3)}
.sidebar-item.active .sidebar-badge{background:rgba(255,255,255,.2);color:var(--ink-fg)}
.sidebar-upsell{margin-top:auto;padding:16px;border:1.5px solid var(--border);border-radius:var(--r-lg);margin-top:16px;background:var(--bg2)}
.sidebar-backdrop{display:none}
.app-main{grid-row:2;min-height:calc(100vh - var(--header-h));overflow-x:hidden}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 18px;height:40px;border-radius:var(--r);font-size:.875rem;font-weight:600;transition:all var(--t) var(--ease);white-space:nowrap;cursor:pointer;text-decoration:none;position:relative;overflow:hidden}
.btn-primary{background:var(--ink);color:var(--ink-fg)}
.btn-primary:hover{opacity:.85;transform:translateY(-1px);box-shadow:var(--sh)}
.btn-primary:active{transform:none;opacity:1}
.btn-secondary{background:var(--bg2);color:var(--text);border:1.5px solid var(--border)}
.btn-secondary:hover{background:var(--bg3);border-color:var(--border2);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text2)}
.btn-ghost:hover{background:var(--bg2);color:var(--text)}
.btn-danger{background:#fef2f2;color:#c53030;border:1.5px solid #fed7d7}
.btn-danger:hover{background:#fed7d7}
.btn-sm{height:32px;padding:0 12px;font-size:.8rem;border-radius:var(--r-sm)}
.btn-lg{height:50px;padding:0 28px;font-size:1rem;border-radius:var(--r-lg)}
.btn-icon{width:40px;padding:0}
.btn-icon.btn-sm{width:32px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none!important}
.w-full{width:100%}

/* ── Cards ── */
.card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-lg);padding:22px;transition:all var(--t)}
.card:hover{box-shadow:var(--sh);border-color:var(--border2)}
.card-sm{padding:14px;border-radius:var(--r)}
.card-lg{padding:28px;border-radius:var(--r-xl)}
.card-interactive,.card-iactive{cursor:pointer}
.card-interactive:hover,.card-iactive:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.card-highlight{border-color:var(--ink);background:var(--bg2)}

/* ── Fields ── */
.field{display:flex;flex-direction:column;gap:5px}
.field-label,.field-lbl{font-size:.83rem;font-weight:600;color:var(--text2)}
.input{height:42px;padding:0 14px;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r);color:var(--text);font-size:.875rem;font-family:var(--font);outline:none;width:100%;transition:all var(--t)}
.input:focus{border-color:var(--text3);box-shadow:0 0 0 3px var(--glow);background:var(--surface)}
.input::placeholder{color:var(--text4)}
.textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical}
.select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:36px}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--r-full);font-size:.72rem;font-weight:700;letter-spacing:.04em}
.badge-xs{padding:1px 6px;font-size:.65rem}
.badge-dark{background:var(--ink);color:var(--ink-fg)}
.badge-light{background:var(--bg3);color:var(--text2)}
.badge-outline{background:transparent;border:1.5px solid var(--border2);color:var(--text3)}
.badge-green{background:#d4edda;color:#155724}
.badge-yellow{background:#fff3cd;color:#856404}
.badge-red{background:#f8d7da;color:#721c24}

/* ── Page structure ── */
.page-header{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:14px;padding:28px 28px 0}
.page-title{font-size:1.75rem;font-weight:900;letter-spacing:-.035em;line-height:1.1}
.page-sub{font-size:.9rem;color:var(--text3);margin-top:5px;line-height:1.5}
.page-body{padding:24px 28px 64px}

/* ── Grids ── */
.g2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.g-auto{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.g-auto-lg{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}

/* ── Stats ── */
.stat-card{border:1.5px solid var(--border);border-radius:var(--r-lg);padding:20px;background:var(--surface);position:relative;overflow:hidden}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--ink);opacity:.15;border-radius:var(--r-lg) var(--r-lg) 0 0}
.stat-num{font-size:2rem;font-weight:900;letter-spacing:-.04em;line-height:1}
.stat-lbl{font-size:.8rem;color:var(--text3);font-weight:500;margin-top:5px}
.stat-change{font-size:.75rem;font-weight:600;margin-top:8px}
.progress-bar{height:5px;background:var(--bg3);border-radius:var(--r-full);overflow:hidden;margin-top:12px}
.progress-fill{height:100%;background:var(--ink);border-radius:var(--r-full);transition:width .8s var(--spring)}

/* ── Tool cards ── */
.tool-card{background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r-lg);padding:20px;text-align:center;cursor:pointer;transition:all var(--t-md) var(--spring);display:flex;flex-direction:column;align-items:center;gap:10px;position:relative;text-decoration:none}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:var(--ink)}
.tool-ico{width:48px;height:48px;border-radius:var(--r);background:var(--surface);border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:22px;transition:all var(--t)}
.tool-card:hover .tool-ico{background:var(--ink);color:var(--ink-fg);border-color:var(--ink);transform:scale(1.1)}
.tool-name{font-weight:700;font-size:.9rem}
.tool-desc{font-size:.75rem;color:var(--text3);line-height:1.4}
.tool-card.locked{opacity:.6}
.tool-card.locked .tool-ico{filter:grayscale(1)}
.lock-pip{position:absolute;top:10px;right:10px;font-size:12px;opacity:.5}
.tool-new-badge{position:absolute;top:10px;right:10px;background:var(--ink);color:var(--ink-fg);font-size:.58rem;font-weight:800;padding:2px 6px;border-radius:var(--r-full);letter-spacing:.05em}

/* ── Dimension tags ── */
.dim-tag{display:inline-flex;align-items:center;gap:5px;padding:5px 13px;border-radius:var(--r-full);border:1.5px solid var(--border);font-size:.72rem;font-weight:700;color:var(--text2);cursor:pointer;transition:all var(--t);white-space:nowrap;text-decoration:none}
.dim-tag:hover,.dim-tag.active{background:var(--ink);color:var(--ink-fg);border-color:var(--ink)}

/* ── Tabs ── */
.tabs{display:flex;gap:4px;background:var(--bg2);border-radius:var(--r);padding:4px;width:fit-content}
.tab{padding:8px 18px;border-radius:var(--r-sm);font-size:.85rem;font-weight:600;color:var(--text3);cursor:pointer;transition:all var(--t)}
.tab.active{background:var(--surface);color:var(--text);box-shadow:var(--sh-xs)}

/* ── Modal ── */
.modal-overlay{position:fixed;inset:0;background:var(--overlay);z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(6px);animation:fadeIn var(--t) var(--ease)}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:30px;max-width:560px;width:100%;box-shadow:var(--sh-xl);animation:modalIn var(--t-md) var(--spring);max-height:90vh;overflow-y:auto}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:none}}
.modal-hdr{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:24px}
.modal-title{font-size:1.25rem;font-weight:800;letter-spacing:-.02em}
.modal-lg{max-width:860px}

/* ── Toast ── */
#toast-container{position:fixed;bottom:24px;right:24px;z-index:2000;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast{background:var(--ink);color:var(--ink-fg);padding:13px 18px;border-radius:var(--r-lg);font-size:.875rem;font-weight:500;box-shadow:var(--sh-xl);animation:toastIn var(--t-md) var(--spring);max-width:320px;pointer-events:all;line-height:1.4;display:flex;align-items:center;gap:10px}
.toast-error{background:#1a0000;color:#ffb3b3}
.toast-ok{background:#001a00;color:#b3ffb3}
@keyframes toastIn{from{opacity:0;transform:translateX(110%)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateX(110%)}}

/* ── Auth pages ── */
.auth-page{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}
.auth-panel-visual{background:var(--ink);color:var(--ink-fg);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px;position:relative;overflow:hidden}
.auth-panel-visual::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 25% 25%,rgba(255,255,255,.08) 0%,transparent 50%),radial-gradient(circle at 75% 75%,rgba(255,255,255,.05) 0%,transparent 50%);pointer-events:none}
.auth-visual-inner{position:relative;z-index:1;width:100%;max-width:420px;text-align:center}
.auth-visual-mark{width:68px;height:68px;background:var(--ink-fg);color:var(--ink);border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:900;margin:0 auto 24px;box-shadow:0 8px 32px rgba(0,0,0,.3)}
.auth-visual-title{font-size:2.4rem;font-weight:900;letter-spacing:-.04em;line-height:1.05}
.auth-visual-sub{font-size:.95rem;opacity:.55;max-width:360px;margin:16px auto 0;line-height:1.65}
.auth-features{display:flex;flex-direction:column;gap:16px;margin-top:40px;text-align:left}
.auth-feature{display:flex;align-items:flex-start;gap:13px}
.auth-feature-icon{width:36px;height:36px;background:rgba(255,255,255,.13);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.auth-feature-name{font-size:.875rem;font-weight:700;opacity:.92}
.auth-feature-desc{font-size:.78rem;opacity:.5;margin-top:2px;line-height:1.4}
.auth-panel-form{display:flex;align-items:center;justify-content:center;padding:60px;background:var(--bg)}
.auth-form{width:100%;max-width:400px}
.auth-form-title{font-size:1.75rem;font-weight:900;letter-spacing:-.035em;margin-bottom:8px}
.auth-form-sub{color:var(--text3);font-size:.9rem;margin-bottom:30px}
.provider-btn{width:100%;height:48px;border-radius:var(--r-lg);border:1.5px solid var(--border);background:var(--bg2);color:var(--text);font-size:.9rem;font-weight:600;display:flex;align-items:center;justify-content:center;gap:12px;cursor:pointer;transition:all var(--t);font-family:var(--font);margin-bottom:12px;text-decoration:none}
.provider-btn:hover{background:var(--bg3);border-color:var(--border2);transform:translateY(-1px);box-shadow:var(--sh)}
.divider{display:flex;align-items:center;gap:12px;color:var(--text4);font-size:.8rem;margin:22px 0}
.divider::before,.divider::after{content:'';flex:1;height:1px;background:var(--border)}

/* ── Chat ── */
.chat-wrap{display:flex;flex-direction:column;height:calc(100vh - var(--header-h));max-width:820px;margin:0 auto;padding:0 24px}
.chat-msgs{flex:1;overflow-y:auto;padding:24px 0;display:flex;flex-direction:column;gap:20px;scrollbar-width:thin;scrollbar-color:var(--border) transparent}
.chat-msg{display:flex;gap:12px;animation:msgIn .28s var(--spring)}
@keyframes msgIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.chat-msg.user{flex-direction:row-reverse}
.chat-av{width:36px;height:36px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:14px;border:1.5px solid var(--border);overflow:hidden;background:var(--bg3)}
.chat-msg.user .chat-av{background:var(--ink);color:var(--ink-fg);font-weight:900;font-size:13px}
.chat-bubble{max-width:72%;padding:14px 18px;font-size:.9rem;line-height:1.7;border-radius:var(--r-lg)}
.chat-msg.assistant .chat-bubble{background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 4px}
.chat-msg.user .chat-bubble{background:var(--ink);color:var(--ink-fg);border-radius:var(--r-lg) var(--r-lg) 4px var(--r-lg)}
.chat-bubble pre{background:var(--bg3);border-radius:var(--r-sm);padding:12px 14px;font-size:.8rem;overflow-x:auto;margin:10px 0;border:1px solid var(--border)}
.chat-bubble strong{font-weight:700}
.chat-bubble ul{padding-left:20px;margin:6px 0}
.chat-bubble li{margin-bottom:4px}
.chat-bar-wrap{padding:16px 0 22px;border-top:1.5px solid var(--border)}
.chat-bar{display:flex;align-items:flex-end;gap:10px;background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:12px 12px 12px 18px;transition:all var(--t)}
.chat-bar:focus-within{border-color:var(--text3);box-shadow:0 0 0 3px var(--glow);background:var(--surface)}
.chat-ta{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:.9rem;resize:none;min-height:24px;max-height:200px;line-height:1.5;font-family:var(--font)}
.chat-ta::placeholder{color:var(--text4)}
.chat-send{width:38px;height:38px;border-radius:11px;background:var(--ink);color:var(--ink-fg);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--t)}
.chat-send:hover:not(:disabled){opacity:.8;transform:scale(1.07)}
.chat-send:disabled{opacity:.35}
.chat-tools-bar{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.chat-tool-btn{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:var(--r-full);border:1.5px solid var(--border);background:var(--bg2);color:var(--text2);font-size:.75rem;font-weight:600;cursor:pointer;transition:all var(--t);font-family:var(--font)}
.chat-tool-btn:hover{border-color:var(--ink);color:var(--ink);background:var(--surface)}
.chat-tool-btn.active{background:var(--ink);color:var(--ink-fg);border-color:var(--ink)}

/* ── Chips ── */
.chip{padding:7px 15px;border-radius:var(--r-full);border:1.5px solid var(--border);background:var(--bg2);color:var(--text2);font-size:.78rem;font-weight:500;cursor:pointer;transition:all var(--t);font-family:var(--font)}
.chip:hover{border-color:var(--ink);color:var(--text);background:var(--bg3)}

/* ── Flashcard ── */
.flashcard{perspective:1200px;cursor:pointer;height:220px}
.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .55s;transform-style:preserve-3d}
.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}
.fc-front,.fc-back{position:absolute;inset:0;border:1.5px solid var(--border);border-radius:var(--r-lg);backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center}
.fc-front{background:var(--surface)}
.fc-back{background:var(--ink);color:var(--ink-fg);transform:rotateY(180deg)}

/* ── Plan cards ── */
.plan-card{border:2px solid var(--border);border-radius:var(--r-xl);padding:28px;cursor:pointer;transition:all var(--t);position:relative}
.plan-card:hover{border-color:var(--text3);box-shadow:var(--sh-lg);transform:translateY(-2px)}
.plan-card.featured{border-color:var(--ink);background:var(--bg2)}
.plan-featured-lbl{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--ink-fg);font-size:.65rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;padding:3px 14px;border-radius:var(--r-full)}
.plan-price{font-size:2.6rem;font-weight:900;letter-spacing:-.04em;line-height:1}
.plan-price span{font-size:.95rem;font-weight:400;color:var(--text3);letter-spacing:0}
.plan-feats{list-style:none;display:flex;flex-direction:column;gap:9px;margin:18px 0 22px}
.plan-feats li{font-size:.85rem;color:var(--text2);display:flex;align-items:flex-start;gap:8px;line-height:1.4}
.plan-feats li::before{content:'✓';font-weight:800;flex-shrink:0;margin-top:1px;color:var(--ink)}

/* ── Slide deck preview ── */
.slide-preview{background:var(--bg2);border:1.5px solid var(--border);border-radius:var(--r);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;cursor:pointer;transition:all var(--t)}
.slide-preview:hover{border-color:var(--ink);box-shadow:var(--sh-lg)}
.slide-thumb{width:100%;height:100%;padding:16px;background:white}

/* ── Spinner / Skeleton ── */
.spinner{width:22px;height:22px;border:2.5px solid var(--border);border-top-color:var(--ink);border-radius:50%;animation:spin .7s linear infinite}
.spinner-lg{width:40px;height:40px}
@keyframes spin{to{transform:rotate(360deg)}}
.skeleton{background:var(--bg3);border-radius:var(--r);position:relative;overflow:hidden}
.skeleton::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 0%,var(--glow2) 50%,transparent 100%);transform:translateX(-100%);animation:shimmer 1.5s infinite}
@keyframes shimmer{to{transform:translateX(100%)}}

/* ── Loading overlay ── */
.loading-overlay{position:fixed;inset:0;background:var(--overlay);z-index:500;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px}
.loading-overlay .spinner{width:48px;height:48px;border-width:4px}

/* ── Onboarding ── */
.onboarding-step{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:32px;text-align:center;max-width:480px;margin:0 auto}
.onboarding-num{width:40px;height:40px;background:var(--ink);color:var(--ink-fg);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:900;margin:0 auto 16px;font-size:1rem}

/* ── Razorpay button override ── */
.rzp-checkout-btn{display:none!important}

/* ── Animations ── */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.fade-up{animation:fadeUp .38s var(--spring) both}
.d1{animation-delay:.05s}.d2{animation-delay:.10s}.d3{animation-delay:.15s}.d4{animation-delay:.20s}.d5{animation-delay:.25s}
@keyframes dotPulse{0%,100%{opacity:.25;transform:scale(.8)}50%{opacity:1;transform:scale(1)}}
.dot1{animation:dotPulse 1.2s .0s infinite}
.dot2{animation:dotPulse 1.2s .2s infinite}
.dot3{animation:dotPulse 1.2s .4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.pulse{animation:pulse 2s infinite}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text3)}

/* ── AI Generate button ── */
.ai-btn{display:inline-flex;align-items:center;gap:8px;padding:0 18px;height:40px;border-radius:var(--r);font-size:.875rem;font-weight:700;background:linear-gradient(135deg,var(--ink) 0%,var(--text2) 100%);color:var(--ink-fg);cursor:pointer;border:none;font-family:var(--font);transition:all var(--t);white-space:nowrap}
.ai-btn:hover{opacity:.85;transform:translateY(-1px);box-shadow:var(--sh-lg)}
.ai-btn::before{content:'◈';margin-right:2px}

/* ── Utility ── */
.flex{display:flex}.flex-col{display:flex;flex-direction:column}
.items-center{align-items:center}.items-start{align-items:flex-start}
.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.flex-wrap{flex-wrap:wrap}
.gap-4{gap:4px}.gap-6{gap:6px}.gap-8{gap:8px}.gap-10{gap:10px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-20{gap:20px}.gap-24{gap:24px}
.text-center{text-align:center}.text-muted{color:var(--text3)}
.text-xs{font-size:.72rem}.text-sm{font-size:.875rem}.text-lg{font-size:1.125rem}
.font-bold{font-weight:700}.font-semibold{font-weight:600}.font-black{font-weight:900}
.mt-4{margin-top:4px}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-14{margin-top:14px}
.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mt-24{margin-top:24px}.mt-28{margin-top:28px}.mt-32{margin-top:32px}
.mb-4{margin-bottom:4px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-14{margin-bottom:14px}
.mb-16{margin-bottom:16px}.mb-18{margin-bottom:18px}.mb-20{margin-bottom:20px}.mb-24{margin-bottom:24px}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.label{font-size:.68rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase}
.small{font-size:.82rem}
.rounded-full{border-radius:var(--r-full)}
.overflow-hidden{overflow:hidden}
.relative{position:relative}
.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ── Responsive ── */
@media(max-width:1024px){
  .app-shell{grid-template-columns:1fr}
  .app-sidebar{position:fixed;left:0;top:var(--header-h);height:calc(100vh - var(--header-h));transform:translateX(-100%);z-index:200;box-shadow:var(--sh-xl);width:var(--sidebar-w)}
  .app-sidebar.open{transform:translateX(0)}
  .sidebar-backdrop{display:block;position:fixed;inset:0;top:var(--header-h);background:var(--overlay);z-index:150;opacity:0;pointer-events:none;transition:opacity var(--t-md)}
  .sidebar-backdrop.show{opacity:1;pointer-events:all}
  .g4{grid-template-columns:repeat(2,1fr)}
  .page-header,.page-body{padding-left:18px;padding-right:18px}
}
@media(max-width:768px){
  .auth-page{grid-template-columns:1fr}
  .auth-panel-visual{display:none}
  .g3{grid-template-columns:repeat(2,1fr)}
  .chat-wrap{padding:0 12px}
  .modal{padding:20px}
}
@media(max-width:540px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .page-title{font-size:1.4rem}
  .header-search{display:none}
  .user-name{display:none}
}

/* ── v3 Additions ────────────────────────────────────────────────────────── */

/* Source context badge */
.source-ctx-badge{display:none;align-items:center;gap:5px;padding:4px 10px;border-radius:var(--r-full);background:var(--bg3);border:1.5px solid var(--border);font-size:.72rem;font-weight:600;color:var(--text2)}

/* Offline indicator */
[data-offline="1"] .app-header::after{content:'⚠ Offline';position:fixed;top:0;left:50%;transform:translateX(-50%);background:#f59e0b;color:#fff;font-size:.72rem;font-weight:700;padding:4px 14px;border-radius:0 0 var(--r) var(--r);z-index:999}

/* Grid additions */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-auto-280{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}

/* Slide card */
.slide-card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-lg);overflow:hidden;cursor:pointer;transition:all var(--t)}
.slide-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:var(--text3)}
.slide-card.active{border-color:var(--ink);box-shadow:0 0 0 2px var(--ink)}
.slide-canvas{aspect-ratio:16/9;padding:24px;display:flex;flex-direction:column;justify-content:center}
.slide-canvas.theme-dark{background:#0a0a0a;color:#f2f2f2}
.slide-canvas.theme-light{background:#fff;color:#0a0a0a}
.slide-canvas.theme-brand{background:linear-gradient(135deg,#1e1b4b,#312e81);color:#e0e7ff}

/* AI Tool integration badge on source cards */
.source-ai-bar{display:flex;gap:5px;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}
.source-ai-btn{display:inline-flex;align-items:center;gap:4px;padding:4px 9px;border-radius:var(--r-full);background:var(--bg3);border:1px solid var(--border);font-size:.7rem;font-weight:600;cursor:pointer;color:var(--text2);transition:all var(--t);font-family:var(--font)}
.source-ai-btn:hover{background:var(--ink);color:var(--ink-fg);border-color:var(--ink)}

/* Mindmap node colors */
.mm-node{padding:8px 14px;border-radius:var(--r-full);font-size:.8rem;font-weight:600;color:#fff;display:inline-block;margin:3px}
.mm-child{background:var(--bg2);border:1px solid var(--border);border-radius:var(--r-sm);padding:5px 10px;font-size:.78rem;color:var(--text2);margin-bottom:4px}
.mm-sub{padding:4px 10px 4px 20px;font-size:.73rem;color:var(--text3)}

/* Pathway steps */
.pathway-step{border:1.5px solid var(--border);border-radius:var(--r-lg);padding:18px;position:relative;background:var(--surface)}
.pathway-step::before{content:attr(data-week);position:absolute;top:-10px;left:16px;background:var(--ink);color:var(--ink-fg);font-size:.68rem;font-weight:800;padding:2px 10px;border-radius:var(--r-full)}
.pathway-dim{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:var(--r-full);background:var(--bg3);font-size:.7rem;font-weight:700;color:var(--text2);margin-bottom:8px}

/* Onboarding steps */
.onboarding-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}
.onboarding-card{max-width:560px;width:100%;background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-xl);padding:40px;text-align:center}
.onboarding-progress{height:4px;background:var(--bg3);border-radius:var(--r-full);margin-bottom:32px;overflow:hidden}
.onboarding-progress-fill{height:100%;background:var(--ink);border-radius:var(--r-full);transition:width .4s var(--spring)}
.onboarding-option{border:2px solid var(--border);border-radius:var(--r-lg);padding:14px 18px;cursor:pointer;transition:all var(--t);text-align:left;font-family:var(--font);background:var(--surface);color:var(--text);width:100%;display:flex;align-items:center;gap:12px;font-size:.9rem}
.onboarding-option:hover{border-color:var(--text3);background:var(--bg2)}
.onboarding-option.selected{border-color:var(--ink);background:var(--ink);color:var(--ink-fg)}

/* Modal header */
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.modal-title{font-size:1.15rem;font-weight:800;letter-spacing:-.02em}

/* Drag & drop upload zone */
.upload-zone{border:2px dashed var(--border);border-radius:var(--r-lg);padding:40px;text-align:center;cursor:pointer;transition:all var(--t);background:var(--bg2)}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--ink);background:var(--bg3)}
.upload-zone.drag-over{transform:scale(1.01)}

/* Search results */
.search-result-item{display:flex;align-items:flex-start;gap:14px;padding:16px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--text);transition:background var(--t)}
.search-result-item:hover{background:var(--bg2)}
.search-result-type{width:36px;height:36px;border-radius:var(--r-sm);background:var(--bg3);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}

/* Plan comparison table */
.plan-table{width:100%;border-collapse:collapse;font-size:.85rem}
.plan-table th{padding:12px 16px;text-align:left;border-bottom:2px solid var(--border);font-weight:700;color:var(--text2)}
.plan-table td{padding:11px 16px;border-bottom:1px solid var(--border);color:var(--text2)}
.plan-table tr:hover td{background:var(--bg2)}
.plan-check{color:var(--ink);font-weight:900}
.plan-x{color:var(--text4)}

/* Infographic sections */
.infographic-card{background:var(--surface);border:1.5px solid var(--border);border-radius:var(--r-xl);overflow:hidden}
.infographic-header{padding:28px;text-align:center}
.infographic-section{padding:20px 24px;border-top:1px solid var(--border)}
.infographic-stat{font-size:2.4rem;font-weight:900;letter-spacing:-.04em}

/* Research output */
.research-output h2{font-size:1.1rem;font-weight:800;margin:20px 0 8px;color:var(--text)}
.research-output h3{font-size:.95rem;font-weight:700;margin:16px 0 6px;color:var(--text2)}
.research-output p{margin-bottom:10px;color:var(--text2);line-height:1.7}
.research-output ul,.research-output ol{padding-left:20px;margin:8px 0}
.research-output li{margin-bottom:5px;color:var(--text2)}
.research-output strong{color:var(--text);font-weight:700}

/* Earnings/Analytics */
.earn-stat{border:1.5px solid var(--border);border-radius:var(--r-lg);padding:20px;background:var(--surface)}
.earn-stat-val{font-size:1.8rem;font-weight:900;letter-spacing:-.03em}
.earn-stat-lbl{font-size:.78rem;color:var(--text3);margin-top:4px}
.earn-stat-trend{font-size:.75rem;font-weight:600;margin-top:8px}
.trend-up{color:#059669}.trend-down{color:#e53e3e}

/* Canvas dimension orbit */
.dim-orbit{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.dim-orbit-card{border:1.5px solid var(--border);border-radius:var(--r-lg);padding:16px;cursor:pointer;transition:all var(--t);text-decoration:none;color:var(--text);display:block}
.dim-orbit-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--sh)}
.dim-orbit-icon{font-size:1.8rem;margin-bottom:8px}
.dim-orbit-key{font-weight:900;font-size:.8rem;color:var(--text3);letter-spacing:.05em;text-transform:uppercase}
.dim-orbit-name{font-weight:700;font-size:.9rem;margin-top:2px}

/* Responsive additions */
@media(max-width:768px){
  .grid-3{grid-template-columns:1fr}
  .grid-auto-280{grid-template-columns:1fr}
}