@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================================
   D3fend Design System — White-First Zen + Micro-Interactions
   UX Overhaul: #15 transitions, #16 SVG logo, #17 animations
   ============================================================ */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f1f3f5;
  --border-light: #e9ecef;
  --border-medium: #dee2e6;
  --text-primary: #1a1a2e;
  --text-secondary: #495057;
  --text-muted: #adb5bd;
  --accent: #4f46e5;
  --accent-light: #818cf8;
  --accent-bg: #eef2ff;
  --accent-border: #c7d2fe;
  --green: #10b981;
  --green-bg: #ecfdf5;
  --green-border: #a7f3d0;
  --red: #ef4444;
  --red-bg: #fef2f2;
  --red-border: #fecaca;
  --yellow: #f59e0b;
  --yellow-bg: #fffbeb;
  --gradient: linear-gradient(135deg, #4f46e5, #7c3aed);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-btn: 0 2px 8px rgba(79,70,229,0.2);
}

/* Reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:color 150ms}
a:hover{color:var(--accent-light)}
img{max-width:100%;display:block}

/* #15 — Page entrance animation */
@keyframes pageIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
body{animation:pageIn 0.5s ease-out}

/* #16 — SVG Logo */
.logo-svg{width:32px;height:32px;flex-shrink:0}
.logo-svg-lg{width:48px;height:48px}
.logo-svg-sm{width:28px;height:28px}

/* Container */
.container{max-width:1120px;margin:0 auto;padding:0 1.5rem}

.text-gradient{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ============================================================
   Buttons — #17 micro-interactions
   ============================================================ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);font-family:var(--font);font-size:.875rem;font-weight:600;cursor:pointer;transition:all 200ms ease;text-decoration:none;white-space:nowrap;letter-spacing:-0.01em;position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;inset:0;background:rgba(255,255,255,0.1);opacity:0;transition:opacity 150ms}
.btn:hover::after{opacity:1}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-btn)}
a.btn-primary,a.btn-primary:visited,a.btn-primary:link{color:#fff}
.btn-primary:hover{background:#4338ca;transform:translateY(-1px);box-shadow:0 4px 14px rgba(79,70,229,0.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-medium)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-bg)}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#dc2626;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text-secondary);padding:.5rem 1rem}
.btn-ghost:hover{color:var(--accent);background:var(--accent-bg)}
.btn-lg{padding:1rem 2rem;font-size:1rem;border-radius:var(--radius-lg)}
.btn-sm{padding:6px 1rem;font-size:.75rem}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}

/* #17 — Button pulse for idle CTA */
@keyframes btnPulse{0%,100%{box-shadow:var(--shadow-btn)}50%{box-shadow:0 4px 20px rgba(79,70,229,0.35)}}
.btn-pulse{animation:btnPulse 2s ease-in-out infinite}

/* Forms */
.form-group{margin-bottom:1.25rem}
.form-label{display:block;font-size:.75rem;font-weight:600;color:var(--text-secondary);margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.06em}
.form-input{width:100%;padding:.75rem 1rem;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:1rem;transition:all 150ms;outline:none}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,70,229,0.08);background:#fff}
.form-input::placeholder{color:var(--text-muted)}
.form-error{font-size:.875rem;color:var(--red);margin-top:.5rem;display:none}
.form-error.visible{display:block}
.form-hint{font-size:.75rem;color:var(--text-muted);margin-top:.25rem}

/* ============================================================
   Navbar
   ============================================================ */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;padding:1rem 0;background:rgba(255,255,255,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light)}
.navbar .container{display:flex;align-items:center;justify-content:space-between}
.navbar-brand{display:flex;align-items:center;gap:.5rem;font-size:1.125rem;font-weight:800;color:var(--text-primary);text-decoration:none;letter-spacing:-0.02em}
.navbar-links{display:flex;align-items:center;gap:1.5rem;list-style:none}
.navbar-links a{color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:color 150ms}
.navbar-links a:hover{color:var(--text-primary)}

/* ============================================================
   Hero — #1 demo visual, #3 live counter
   ============================================================ */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:7rem 1.5rem 4rem;position:relative;background:var(--bg-primary)}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 50% at 50% 20%,rgba(79,70,229,0.03) 0%,transparent 60%);pointer-events:none}
.hero-content{position:relative;z-index:1;max-width:720px}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem 1rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;color:var(--accent);margin-bottom:1.5rem;background:var(--accent-bg);border:1px solid var(--accent-border);letter-spacing:.02em}
.hero-badge .pulse{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2.5s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.8)}}
.hero h1{font-size:3.25rem;font-weight:900;line-height:1.1;margin-bottom:1.25rem;letter-spacing:-0.03em}
.hero p{font-size:1.125rem;color:var(--text-secondary);max-width:560px;margin:0 auto 2rem;line-height:1.7}
.hero-actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.5rem}

/* #1 — Hero demo mockup */
.hero-demo{max-width:640px;margin:0 auto;border-radius:var(--radius-xl);border:1px solid var(--border-light);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--bg-secondary);position:relative}
.hero-demo-bar{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:var(--bg-tertiary);border-bottom:1px solid var(--border-light)}
.hero-demo-bar .dot{width:8px;height:8px;border-radius:50%}
.hero-demo-content{padding:1.5rem;display:flex;gap:1rem;align-items:flex-start}
.hero-demo-log{flex:1;display:flex;flex-direction:column;gap:.4rem}
.hero-demo-entry{display:flex;align-items:center;gap:.5rem;padding:.4rem .75rem;border-radius:var(--radius-sm);font-size:.7rem;font-family:var(--font);opacity:0;animation:logSlideIn 0.3s ease forwards;background:var(--bg-primary);border:1px solid var(--border-light)}
@keyframes logSlideIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:translateX(0)}}
.hero-demo-entry.real{border-left:3px solid var(--green)}
.hero-demo-entry.fake{border-left:3px solid var(--red);background:var(--red-bg)}
.hero-demo-verdict{width:100px;height:100px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;border:3px solid var(--green);background:var(--green-bg);transition:all 0.5s ease;flex-shrink:0}
.hero-demo-verdict.fake{border-color:var(--red);background:var(--red-bg)}
.hero-demo-verdict .v-label{font-size:1rem;font-weight:800;color:var(--green)}
.hero-demo-verdict.fake .v-label{color:var(--red)}
.hero-demo-verdict .v-sub{font-size:.55rem;color:var(--text-muted)}

/* #3 — Live counter */
.live-counter{font-size:.8rem;color:var(--text-muted);font-weight:500}
.live-counter span{font-weight:700;color:var(--text-secondary);font-variant-numeric:tabular-nums}

/* #2 — Trust strip */
.trust-strip{padding:3rem 0;border-top:1px solid var(--border-light);background:var(--bg-secondary)}
.trust-strip .container{display:flex;align-items:center;justify-content:center;gap:3rem;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted);font-weight:500}
.trust-item strong{color:var(--text-secondary)}

/* ============================================================
   Sections — Features, How It Works, Coming Soon
   ============================================================ */
.section{padding:5rem 0}
.section-header{text-align:center;margin-bottom:3rem}
.section-header h2{font-size:2rem;font-weight:800;margin-bottom:.75rem;letter-spacing:-0.02em}
.section-header p{color:var(--text-secondary);font-size:1rem;max-width:500px;margin:0 auto}

/* #4 — Feature cards with benefits */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.feature-card{padding:1.5rem 1.25rem;border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);transition:all 250ms;opacity:0;animation:fadeUp 0.5s ease forwards}
.feature-card:nth-child(1){animation-delay:0.05s}
.feature-card:nth-child(2){animation-delay:0.1s}
.feature-card:nth-child(3){animation-delay:0.15s}
.feature-card:nth-child(4){animation-delay:0.2s}
.feature-card:nth-child(5){animation-delay:0.25s}
.feature-card:nth-child(6){animation-delay:0.3s}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.feature-card:hover{border-color:var(--accent-border);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-icon{width:40px;height:40px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:1rem;background:var(--accent-bg)}
.feature-card h3{font-size:1rem;font-weight:700;margin-bottom:.5rem}
.feature-card p{color:var(--text-secondary);font-size:.875rem;line-height:1.6}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;counter-reset:step}
.step{padding:1.25rem;border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);counter-increment:step;transition:all 250ms}
.step:hover{border-color:var(--accent-border);box-shadow:var(--shadow-sm)}
.step::before{content:counter(step);display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;margin-bottom:.75rem}
.step h4{font-size:.875rem;font-weight:700;margin-bottom:.5rem}
.step p{font-size:.75rem;color:var(--text-secondary);line-height:1.6}

/* #5 — Coming Soon with notify */
.coming-soon-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:.75rem}
.coming-soon-card{padding:1.25rem 1rem;border-radius:var(--radius-lg);background:var(--bg-secondary);border:1px solid var(--border-light);text-align:center;position:relative;transition:all 250ms}
.coming-soon-card:hover{border-color:var(--accent-border);background:var(--accent-bg)}
.coming-soon-card .cs-icon{font-size:1.5rem;margin-bottom:.5rem}
.coming-soon-card h4{font-size:.875rem;font-weight:600;margin-bottom:.25rem}
.coming-soon-card p{font-size:.65rem;color:var(--text-muted);line-height:1.4;margin-bottom:.75rem}
.coming-soon-badge{position:absolute;top:.5rem;right:.5rem;font-size:.6rem;font-weight:700;padding:1px 6px;border-radius:var(--radius-full);background:var(--accent-bg);color:var(--accent);text-transform:uppercase;letter-spacing:.06em}
.notify-btn{display:inline-flex;align-items:center;gap:.25rem;font-size:.65rem;font-weight:600;color:var(--accent);background:none;border:1px solid var(--accent-border);border-radius:var(--radius-full);padding:2px 10px;cursor:pointer;transition:all 150ms;font-family:var(--font)}
.notify-btn:hover{background:var(--accent);color:#fff}

/* Footer */
.footer{padding:2.5rem 0;border-top:1px solid var(--border-light);text-align:center}
.footer p{color:var(--text-muted);font-size:.75rem}

/* ============================================================
   Login — #6 auto-fill, #7 skip
   ============================================================ */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;background:var(--bg-secondary)}
.login-card{width:100%;max-width:400px;padding:2.5rem;border-radius:var(--radius-xl);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-lg);animation:fadeUp 0.4s ease}
.login-card .logo-area{text-align:center;margin-bottom:2rem}
.login-card h1{font-size:1.25rem;font-weight:800;letter-spacing:-0.02em}
.login-card .subtitle{color:var(--text-muted);font-size:.875rem;margin-top:.5rem}
.login-card .btn{width:100%;margin-top:.5rem}
.login-divider{display:flex;align-items:center;gap:1rem;margin:1.5rem 0;color:var(--text-muted);font-size:.75rem}
.login-divider::before,.login-divider::after{content:'';flex:1;height:1px;background:var(--border-light)}
.prefill-note{display:flex;align-items:center;gap:.5rem;padding:.5rem .75rem;border-radius:var(--radius-md);background:var(--accent-bg);border:1px solid var(--accent-border);font-size:.7rem;color:var(--accent);font-weight:500;margin-bottom:1rem}

/* ============================================================
   Dashboard Layout
   ============================================================ */
.app-layout{display:flex;flex-direction:column;min-height:100vh;padding-top:56px;background:var(--bg-secondary)}

/* Topbar */
.app-topbar{position:fixed;top:0;left:0;right:0;height:56px;background:rgba(255,255,255,0.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between;padding:0 1.25rem;z-index:100}
.app-topbar .brand{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1rem;color:var(--text-primary);text-decoration:none;letter-spacing:-0.02em}
.app-topbar .meta{display:flex;align-items:center;gap:.75rem}

/* GPU Status */
.gpu-status{display:inline-flex;align-items:center;gap:.5rem;padding:4px .75rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:600;letter-spacing:.02em}
.gpu-status.offline{background:var(--bg-tertiary);color:var(--text-muted)}
.gpu-status.starting{background:var(--yellow-bg);color:var(--yellow);animation:statusPulse 1.5s ease-in-out infinite}
.gpu-status.ready{background:var(--green-bg);color:var(--green)}
@keyframes statusPulse{0%,100%{opacity:1}50%{opacity:.5}}
.gpu-status .dot{width:6px;height:6px;border-radius:50%;background:currentColor}

/* #19 — Connection bar */
.connection-bar{grid-column:1/-1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.4rem 1rem;border-radius:var(--radius-md);font-size:.75rem;font-weight:500;transition:all 300ms}
.connection-bar.connected{background:var(--green-bg);color:var(--green);border:1px solid var(--green-border)}
.connection-bar.reconnecting{background:var(--yellow-bg);color:var(--yellow);border:1px solid #fde68a;animation:statusPulse 1.5s infinite}
.connection-bar.disconnected{background:var(--red-bg);color:var(--red);border:1px solid var(--red-border)}
.connection-bar .retry-btn{background:none;border:1px solid currentColor;border-radius:var(--radius-sm);padding:2px 8px;font-size:.65rem;font-weight:600;color:inherit;cursor:pointer;font-family:var(--font)}

/* Main grid */
.app-main{flex:1;padding:1rem;display:grid;grid-template-columns:1fr 340px;grid-template-rows:auto auto 1fr;gap:.75rem;max-width:1400px;margin:0 auto;width:100%}

/* Controls bar */
.controls-bar{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-xs)}
.controls-bar .left{display:flex;align-items:center;gap:1rem}
.controls-bar .session-info{font-size:.75rem;color:var(--text-muted)}
.controls-bar .right{display:flex;align-items:center;gap:.75rem}

/* #10 — Sound toggle */
.sound-toggle{display:flex;align-items:center;gap:.25rem;font-size:.75rem;cursor:pointer;padding:4px 8px;border-radius:var(--radius-full);background:var(--bg-secondary);border:1px solid var(--border-light);color:var(--text-muted);transition:all 150ms;font-family:var(--font)}
.sound-toggle:hover{border-color:var(--accent-border);color:var(--accent)}
.sound-toggle.active{background:var(--accent-bg);color:var(--accent);border-color:var(--accent-border)}

/* Stats bar */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:.5rem}
.stat-item{text-align:center}
.stat-item .stat-value{font-size:1.25rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary);transition:transform 150ms}
.stat-item .stat-label{font-size:.6rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;font-weight:600}
/* #17 — Count up bounce */
@keyframes countBounce{0%{transform:scale(1)}50%{transform:scale(1.15)}100%{transform:scale(1)}}
.stat-bounce{animation:countBounce 0.3s ease}

/* #8 — Screen preview */
.screen-preview{border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-light);background:#000;aspect-ratio:16/9;max-height:160px}
.screen-preview video{width:100%;height:100%;object-fit:contain}

/* Verdict panel */
.verdict-panel{display:flex;flex-direction:column;align-items:center;gap:1.25rem;padding:1.5rem;border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-xs)}

/* #11 — Verdict circle with confidence ring */
.verdict-circle-wrapper{position:relative;width:160px;height:160px}
.verdict-ring{position:absolute;inset:0;transform:rotate(-90deg)}
.verdict-ring circle{fill:none;stroke-width:4;stroke-linecap:round;transition:stroke-dashoffset 0.8s ease,stroke 0.5s ease}
.verdict-ring .bg{stroke:var(--border-light)}
.verdict-ring .progress{stroke:var(--border-medium);stroke-dasharray:471;stroke-dashoffset:471}
.verdict-ring .progress.safe{stroke:var(--green)}
.verdict-ring .progress.danger{stroke:var(--red)}
.verdict-ring .progress.analyzing{stroke:var(--yellow)}

.verdict-circle{width:100%;height:100%;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-secondary);transition:all 400ms ease;position:relative;z-index:1}
.verdict-circle.safe{background:var(--green-bg)}
.verdict-circle.danger{background:var(--red-bg);animation:dangerPulse 1.5s ease-in-out infinite}
.verdict-circle.analyzing{background:var(--yellow-bg)}
@keyframes dangerPulse{0%,100%{box-shadow:0 0 20px rgba(239,68,68,0.08)}50%{box-shadow:0 0 40px rgba(239,68,68,0.18)}}
.verdict-label{font-size:1.25rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em}
.verdict-sub{font-size:.7rem;color:var(--text-secondary);margin-top:2px}
.verdict-confidence{font-size:.6rem;color:var(--text-muted);margin-top:4px;font-weight:600}

/* Detection details */
.detection-details{width:100%}
.detail-row{display:flex;align-items:center;justify-content:space-between;padding:.6rem 0;border-bottom:1px solid var(--border-light);font-size:.875rem}
.detail-row:last-child{border:none}
.detail-row .label{color:var(--text-secondary);font-size:.75rem}
.detail-row .value{font-weight:600;font-size:.875rem}
.detail-row .value.real{color:var(--green)}
.detail-row .value.fake{color:var(--red)}
.detail-row .value.analyzing{color:var(--yellow)}
.detail-row .value.pending{color:var(--text-muted)}

/* #13 — Face gallery */
.faces-panel{border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-xs);overflow:hidden}
.faces-gallery{display:flex;gap:.5rem;padding:.75rem;overflow-x:auto;min-height:60px;align-items:center}
.faces-gallery::-webkit-scrollbar{height:3px}
.faces-gallery::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:2px}
.face-chip{width:48px;height:48px;border-radius:50%;border:2px solid var(--border-medium);overflow:hidden;flex-shrink:0;position:relative;transition:all 200ms}
.face-chip.real{border-color:var(--green)}
.face-chip.fake{border-color:var(--red);animation:faceAlert 0.5s ease}
@keyframes faceAlert{0%,100%{transform:scale(1)}50%{transform:scale(1.1)}}
.face-chip img{width:100%;height:100%;object-fit:cover}
.face-chip .face-badge{position:absolute;bottom:-2px;right:-2px;width:14px;height:14px;border-radius:50%;border:2px solid #fff;font-size:6px;display:flex;align-items:center;justify-content:center}
.face-chip .face-badge.real{background:var(--green)}
.face-chip .face-badge.fake{background:var(--red)}
.face-empty{color:var(--text-muted);font-size:.7rem;padding:0 .5rem}

/* Activity log — #12 categorized */
.activity-panel{grid-column:1;display:flex;flex-direction:column;border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-xs);min-height:400px;overflow:hidden}
.panel-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;border-bottom:1px solid var(--border-light)}
.panel-header h3{font-size:.875rem;font-weight:600}
.panel-header .count{font-size:.75rem;color:var(--text-muted)}
.panel-tabs{display:flex;gap:0;border-bottom:1px solid var(--border-light)}
.panel-tab{flex:1;padding:.4rem;text-align:center;font-size:.7rem;font-weight:600;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;transition:all 150ms;background:none;border-left:none;border-right:none;border-top:none;font-family:var(--font)}
.panel-tab:hover{color:var(--text-primary);background:var(--bg-secondary)}
.panel-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.panel-tab .tab-count{background:var(--red-bg);color:var(--red);font-size:.6rem;padding:0 4px;border-radius:var(--radius-full);margin-left:2px}

.activity-feed{flex:1;overflow-y:auto;padding:.5rem}
.activity-feed::-webkit-scrollbar{width:3px}
.activity-feed::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:2px}

/* #17 — Log entry slide-in */
.log-entry{display:flex;align-items:flex-start;gap:.5rem;padding:.4rem .5rem;border-radius:var(--radius-sm);font-size:.75rem;transition:background 150ms;animation:logSlideIn 0.25s ease}
.log-entry:hover{background:var(--bg-secondary)}
.log-entry .timestamp{color:var(--text-muted);font-size:.65rem;white-space:nowrap;min-width:52px;font-variant-numeric:tabular-nums;font-family:'SF Mono','Menlo',monospace}
.log-entry .icon{font-size:.875rem;line-height:1}
.log-entry .message{color:var(--text-secondary);flex:1}
.log-entry.alert{background:var(--red-bg);border-left:3px solid var(--red)}
.log-entry.alert .message{color:var(--red);font-weight:600}

/* #18 — Better empty state */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1.5rem;text-align:center;color:var(--text-muted)}
.empty-state .icon{font-size:2.5rem;margin-bottom:.75rem;opacity:.3}
.empty-state p{font-size:.875rem;max-width:280px;margin-bottom:1rem}
.empty-steps{display:flex;gap:1rem;text-align:center}
.empty-step{display:flex;flex-direction:column;align-items:center;gap:.25rem;font-size:.7rem;color:var(--text-muted)}
.empty-step .step-num{width:24px;height:24px;border-radius:50%;background:var(--accent-bg);color:var(--accent);font-weight:700;font-size:.65rem;display:flex;align-items:center;justify-content:center}
.empty-step .step-arrow{color:var(--border-medium);font-size:1rem}

/* Sidebar */
.sidebar{display:flex;flex-direction:column;gap:.75rem}

/* #20 — Toast notifications */
.toast-container{position:fixed;top:64px;right:1rem;z-index:200;display:flex;flex-direction:column;gap:.5rem;max-width:360px}
.toast{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:var(--radius-md);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-md);font-size:.8rem;animation:toastIn 0.3s ease;font-family:var(--font)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
.toast.error{border-left:3px solid var(--red)}
.toast.success{border-left:3px solid var(--green)}
.toast.info{border-left:3px solid var(--accent)}
.toast .toast-msg{flex:1;color:var(--text-primary)}
.toast .toast-action{background:none;border:1px solid var(--border-medium);padding:3px 10px;border-radius:var(--radius-sm);font-size:.7rem;font-weight:600;cursor:pointer;color:var(--accent);font-family:var(--font);transition:all 150ms}
.toast .toast-action:hover{background:var(--accent);color:#fff}
.toast .toast-close{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1rem;padding:0 .25rem}

/* #14 — Session summary modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.3);backdrop-filter:blur(4px);z-index:300;display:flex;align-items:center;justify-content:center;animation:fadeIn 0.2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{background:var(--bg-primary);border-radius:var(--radius-xl);padding:2rem;max-width:420px;width:90%;box-shadow:var(--shadow-lg);animation:modalIn 0.3s ease}
@keyframes modalIn{from{opacity:0;transform:scale(0.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal h2{font-size:1.25rem;font-weight:800;margin-bottom:.25rem}
.modal .modal-sub{font-size:.8rem;color:var(--text-muted);margin-bottom:1.5rem}
.modal-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;margin-bottom:1.5rem}
.modal-stat{padding:.75rem;border-radius:var(--radius-md);background:var(--bg-secondary);text-align:center}
.modal-stat .ms-value{font-size:1.5rem;font-weight:800}
.modal-stat .ms-label{font-size:.65rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}
.modal-verdict{display:flex;align-items:center;justify-content:center;gap:.75rem;padding:1rem;border-radius:var(--radius-md);margin-bottom:1.5rem}
.modal-verdict.safe{background:var(--green-bg);border:1px solid var(--green-border)}
.modal-verdict.danger{background:var(--red-bg);border:1px solid var(--red-border)}
.modal-verdict .mv-icon{font-size:1.5rem}
.modal-verdict .mv-text{font-weight:700}
.modal-actions{display:flex;gap:.5rem}
.modal-actions .btn{flex:1}

/* Spinner */
.spinner{width:18px;height:18px;border:2px solid var(--border-light);border-top-color:var(--accent);border-radius:50%;animation:spin 0.7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============================================================
   Detection UX — 20 Improvements
   ============================================================ */

/* #1 — Smooth verdict transition */
.verdict-circle{transition:background 400ms cubic-bezier(.4,0,.2,1),box-shadow 400ms ease}
.verdict-circle.transitioning{transform:scale(1.05);transition:transform 200ms cubic-bezier(.34,1.56,.64,1)}

/* #3 — Screen edge glow */
.screen-preview{position:relative;transition:box-shadow 500ms ease}
.screen-preview.glow-green{box-shadow:0 0 20px rgba(16,185,129,0.4),inset 0 0 15px rgba(16,185,129,0.1)}
.screen-preview.glow-red{box-shadow:0 0 25px rgba(239,68,68,0.5),inset 0 0 15px rgba(239,68,68,0.15);animation:redGlow 0.8s ease 3}
@keyframes redGlow{0%,100%{box-shadow:0 0 25px rgba(239,68,68,0.5)}50%{box-shadow:0 0 40px rgba(239,68,68,0.7)}}

/* #4 — Frame heartbeat indicator */
.frame-heartbeat{position:absolute;top:8px;right:8px;display:flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--radius-full);background:rgba(0,0,0,0.6);color:#fff;font-size:.6rem;font-weight:600;z-index:2}
.heartbeat-dot{width:6px;height:6px;border-radius:50%;background:var(--green);transition:all 150ms}
.heartbeat-dot.pulse{animation:hbPulse 0.4s ease}
@keyframes hbPulse{0%{transform:scale(1);opacity:1}50%{transform:scale(1.8);opacity:.5}100%{transform:scale(1);opacity:1}}

/* #5 — Face overlay canvas on preview */
.preview-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:1}

/* #6 — Face sparkline */
.sparkline-container{display:flex;flex-direction:column;gap:2px;padding:.25rem .75rem}
.sparkline-row{display:flex;align-items:center;gap:.5rem;font-size:.65rem}
.sparkline-label{min-width:36px;color:var(--text-muted);font-weight:600}
.sparkline{height:20px;flex:1;position:relative}
.sparkline canvas{width:100%;height:100%}

/* #7 — Face comparison view */
.face-compare{display:flex;align-items:center;gap:.75rem;padding:.75rem;border-radius:var(--radius-md);background:var(--red-bg);border:1px solid var(--red-border);animation:fadeUp 0.3s ease}
.face-compare-img{width:56px;height:56px;border-radius:var(--radius-md);border:2px solid var(--red);display:flex;align-items:center;justify-content:center;background:rgba(239,68,68,0.1);font-size:1.5rem;flex-shrink:0}
.face-compare-info{flex:1}
.face-compare-info .fc-label{font-size:.8rem;font-weight:700;color:var(--red)}
.face-compare-info .fc-conf{font-size:.65rem;color:var(--text-secondary)}

/* #9 — D3 buffer progress bar */
.d3-progress{width:100%;margin-top:.25rem}
.d3-bar-track{height:6px;border-radius:3px;background:var(--bg-tertiary);overflow:hidden;position:relative}
.d3-bar-fill{height:100%;border-radius:3px;background:var(--accent);transition:width 300ms ease;position:relative}
.d3-bar-fill.complete{background:var(--green);animation:barFlash 0.5s ease}
@keyframes barFlash{0%,100%{opacity:1}50%{opacity:.5}}
.d3-bar-label{font-size:.6rem;color:var(--text-muted);margin-top:2px;text-align:center}

/* #10 — Volatility gauge */
.volatility-gauge{width:100%;height:8px;border-radius:4px;background:linear-gradient(90deg,var(--green) 0%,var(--yellow) 50%,var(--red) 100%);position:relative;margin-top:.25rem}
.volatility-needle{position:absolute;top:-3px;width:3px;height:14px;border-radius:2px;background:var(--text-primary);transition:left 400ms ease;box-shadow:0 0 4px rgba(0,0,0,0.3)}

/* #13 — Latency badge */
.latency-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--radius-full);background:var(--bg-tertiary);font-size:.6rem;color:var(--text-muted);font-weight:600;font-variant-numeric:tabular-nums}
.latency-badge.fast{color:var(--green)}
.latency-badge.medium{color:var(--yellow)}
.latency-badge.slow{color:var(--red)}

/* #14 — Verdict history strip */
.verdict-strip{display:flex;gap:3px;justify-content:center;flex-wrap:wrap;padding:.5rem 0}
.verdict-dot{width:8px;height:8px;border-radius:50%;transition:all 200ms;opacity:.7}
.verdict-dot:last-child{opacity:1;transform:scale(1.2)}
.verdict-dot.safe{background:var(--green)}
.verdict-dot.danger{background:var(--red)}
.verdict-dot.analyzing{background:var(--yellow)}
.verdict-dot.idle{background:var(--border-medium)}

/* #15 — Progressive status */
.status-pipeline{display:flex;align-items:center;gap:4px;padding:.25rem 0;font-size:.6rem}
.pipeline-step{padding:1px 6px;border-radius:var(--radius-full);background:var(--bg-tertiary);color:var(--text-muted);transition:all 200ms;font-weight:500}
.pipeline-step.active{background:var(--accent-bg);color:var(--accent)}
.pipeline-step.done{background:var(--green-bg);color:var(--green)}
.pipeline-step.fail{background:var(--red-bg);color:var(--red)}

/* #16 — Threat level */
.threat-level{display:flex;gap:3px;align-items:center;padding:.5rem 0}
.threat-bar{flex:1;height:6px;border-radius:3px;background:var(--bg-tertiary);transition:background 300ms}
.threat-bar.active:nth-child(1){background:var(--green)}
.threat-bar.active:nth-child(2){background:#34d399}
.threat-bar.active:nth-child(3){background:var(--yellow)}
.threat-bar.active:nth-child(4){background:#f97316}
.threat-bar.active:nth-child(5){background:var(--red)}
.threat-label{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;min-width:52px;text-align:right}

/* #17 — Sound toggle active state indicator */
.sound-toggle.voice{background:var(--green-bg);color:var(--green);border-color:var(--green-border)}

/* #19 — Rolling chart */
.session-chart{border-radius:var(--radius-lg);background:var(--bg-primary);border:1px solid var(--border-light);box-shadow:var(--shadow-xs);overflow:hidden}
.chart-bars{display:flex;align-items:flex-end;gap:2px;height:50px;padding:.5rem .75rem}
.chart-bar{flex:1;border-radius:2px 2px 0 0;transition:height 300ms ease;min-width:4px}
.chart-bar.real{background:var(--green)}
.chart-bar.fake{background:var(--red)}
.chart-bar.empty{background:var(--bg-tertiary)}

/* #20 — Export button */
.export-btn{display:flex;align-items:center;justify-content:center;gap:.25rem;width:100%;padding:.4rem;border:1px solid var(--border-light);border-radius:var(--radius-md);background:var(--bg-primary);color:var(--text-secondary);font-size:.7rem;font-weight:600;cursor:pointer;font-family:var(--font);transition:all 150ms}
.export-btn:hover{border-color:var(--accent-border);color:var(--accent);background:var(--accent-bg)}

/* ============================================================
   Responsive
   ============================================================ */
@media(max-width:900px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .coming-soon-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .hero h1{font-size:2rem}
  .features-grid{grid-template-columns:1fr}
  .coming-soon-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .app-main{grid-template-columns:1fr}
  .sidebar{order:-1}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .navbar-links{display:none}
  .trust-strip .container{gap:1.5rem}
  .hero-demo{margin:0 -1rem}
}