/* ═══════════════════════════════════════════════════
   VOLLEYELITE × JUMP GUIDES HIGH — JUMP ANALYZER
   ═══════════════════════════════════════════════════ */

:root {
  /* VolleyElite brand */
  --ve-blue: #3B82F6;
  --ve-blue-light: #60A5FA;
  --ve-blue-dark: #2563EB;
  --ve-blue-glow: rgba(59, 130, 246, 0.25);

  /* Jump Guides High brand */
  --jgh-orange: #F97316;
  --jgh-orange-light: #FB923C;
  --jgh-orange-dark: #EA580C;
  --jgh-orange-glow: rgba(249, 115, 22, 0.25);

  /* Shared palette */
  --bg: #0A0E1A;
  --bg-elevated: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(25, 35, 55, 0.9);
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(59, 130, 246, 0.3);
  --text: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-dim: #64748B;
  --green: #10B981;
  --green-glow: rgba(16, 185, 129, 0.2);
  --red: #EF4444;
  --yellow: #F59E0B;
  --purple: #8B5CF6;

  /* Gradient */
  --gradient-brand: linear-gradient(135deg, var(--ve-blue) 0%, var(--jgh-orange) 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(249, 115, 22, 0.15) 100%);
  --gradient-glow: linear-gradient(135deg, var(--ve-blue-glow) 0%, var(--jgh-orange-glow) 100%);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.15);
  --shadow-glow-orange: 0 0 30px rgba(249, 115, 22, 0.15);

  /* Typography */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ═══════════════════════════════════════════════════
   ANIMATED BACKGROUND
   ═══════════════════════════════════════════════════ */

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
}

.velocity-lines {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.velocity-line {
  position: absolute;
  height: 1px;
  border-radius: 1px;
  opacity: 0;
  animation: velocityShoot linear forwards;
}

@keyframes velocityShoot {
  0% { opacity: 0; transform: translateX(-100%); }
  10% { opacity: 0.6; }
  90% { opacity: 0.3; }
  100% { opacity: 0; transform: translateX(100vw); }
}

/* Floating particles */
.bg-grid::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--ve-blue-glow) 0%, transparent 70%);
  top: 20%;
  left: 10%;
  animation: floatGlow 8s ease-in-out infinite;
}

.bg-grid::before {
  content: '';
  position: absolute;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, var(--jgh-orange-glow) 0%, transparent 70%);
  top: 60%;
  right: 10%;
  animation: floatGlow 10s ease-in-out infinite reverse;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
  50% { transform: translate(30px, -40px) scale(1.2); opacity: 0.5; }
}

/* ═══════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.header-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.logo-combined {
  height: 44px;
  filter: invert(1) brightness(1.1);
  transition: transform 0.3s ease;
}

.logo-combined:hover { transform: scale(1.05); }

/* ═══════════════════════════════════════════════════
   TAB NAVIGATION
   ═══════════════════════════════════════════════════ */

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 12px;
  padding: 4px;
  background: var(--surface);
  border-radius: var(--radius-md);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.tab-btn {
  flex: 1;
  padding: 8px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover { color: var(--text-secondary); }

.tab-btn.active {
  background: var(--ve-blue);
  color: white;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.tab-content { animation: fadeInUp 0.4s ease-out; }

/* ═══════════════════════════════════════════════════
   SECTION HEADERS (History + KB)
   ═══════════════════════════════════════════════════ */

.section-header {
  text-align: center;
  margin-bottom: 32px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.section-sub {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════
   HISTORY TAB
   ═══════════════════════════════════════════════════ */

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-dim);
}

.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state p { font-size: 18px; font-weight: 600; color: var(--text-secondary); margin-bottom: 4px; }
.empty-state span { font-size: 13px; }

.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.history-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s;
}

.history-card:hover {
  border-color: var(--ve-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

.history-card-info { flex: 1; }

.history-card-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.history-card-meta {
  font-size: 12px;
  color: var(--text-dim);
  display: flex;
  gap: 12px;
}

.history-card-preview {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.history-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  margin-left: 16px;
}

.btn-delete {
  padding: 6px 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.btn-delete:hover { background: rgba(239, 68, 68, 0.2); }

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 24px;
  transition: all 0.2s;
}

.btn-back:hover { border-color: var(--ve-blue); color: var(--text); }

/* ═══════════════════════════════════════════════════
   KNOWLEDGE BASE TAB
   ═══════════════════════════════════════════════════ */

.kb-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  color: var(--green);
  margin-top: 12px;
}

.kb-loading {
  text-align: center;
  padding: 40px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.kb-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kb-course {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.kb-course-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  transition: background 0.2s;
}

.kb-course-header:hover { background: var(--surface-hover); }

.kb-course-title {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.kb-course-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--ve-blue-light);
  background: rgba(59, 130, 246, 0.1);
  padding: 2px 8px;
  border-radius: 100px;
}

.kb-course-arrow {
  color: var(--text-dim);
  transition: transform 0.3s;
  font-size: 14px;
}

.kb-course.open .kb-course-arrow { transform: rotate(180deg); }

.kb-course-body {
  display: none;
  border-top: 1px solid var(--border);
}

.kb-course.open .kb-course-body { display: block; }

.kb-section {
  border-bottom: 1px solid var(--border);
}

.kb-section:last-child { border-bottom: none; }

.kb-section-header {
  padding: 12px 20px 12px 32px;
  font-size: 13px;
  font-weight: 600;
  color: var(--jgh-orange-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background 0.2s;
}

.kb-section-header:hover { background: var(--surface); }

.kb-section-body { display: none; }
.kb-section.open .kb-section-body { display: block; }

.kb-lesson {
  padding: 10px 20px 10px 48px;
  border-top: 1px solid rgba(255,255,255,0.03);
  cursor: pointer;
  transition: background 0.2s;
}

.kb-lesson:hover { background: var(--surface); }

.kb-lesson-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kb-lesson-transcript {
  display: none;
  margin-top: 10px;
  padding: 14px;
  background: rgba(0,0,0,0.3);
  border-radius: var(--radius-sm);
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-dim);
  font-family: var(--font);
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.kb-lesson.open .kb-lesson-transcript { display: block; }
.kb-lesson.open .kb-lesson-name { color: var(--text); }

/* ═══════════════════════════════════════════════════
   MAIN CONTENT
   ═══════════════════════════════════════════════════ */

.main {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */

.hero {
  text-align: center;
  animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--gradient-brand-subtle);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ve-blue-light);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.title-line { display: block; }

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

.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
  margin: 0 auto 40px;
}

/* ═══════════════════════════════════════════════════
   UPLOAD ZONE
   ═══════════════════════════════════════════════════ */

.upload-zone {
  position: relative;
  border: 2px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  cursor: pointer;
  transition: all 0.4s ease;
  background: var(--surface);
  overflow: hidden;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-brand-subtle);
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: inherit;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--ve-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

.upload-zone:hover::before,
.upload-zone.dragover::before {
  opacity: 1;
}

.upload-zone > * { position: relative; z-index: 1; }

.upload-icon {
  color: var(--ve-blue-light);
  margin-bottom: 16px;
  animation: floatIcon 3s ease-in-out infinite;
}

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.upload-text {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.upload-hint {
  font-size: 13px;
  color: var(--text-dim);
}

/* Video Preview */
.video-preview {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  animation: fadeInUp 0.5s ease-out;
}

.video-preview video {
  width: 100%;
  display: block;
  max-height: 400px;
  object-fit: contain;
}

.btn-remove {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(239, 68, 68, 0.9);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  backdrop-filter: blur(8px);
}

.btn-remove:hover { background: var(--red); transform: scale(1.05); }

/* ═══════════════════════════════════════════════════
   ATHLETE FORM
   ═══════════════════════════════════════════════════ */

.athlete-form {
  margin-top: 32px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  animation: fadeInUp 0.5s ease-out;
}

.form-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
}

.form-title svg { color: var(--ve-blue-light); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group { text-align: left; }

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.required { color: var(--jgh-orange); }

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  transition: all 0.3s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--ve-blue);
  box-shadow: 0 0 0 3px var(--ve-blue-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-full { grid-column: 1 / -1; }

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

/* ═══════════════════════════════════════════════════
   ANALYZE BUTTON
   ═══════════════════════════════════════════════════ */

.btn-analyze {
  width: 100%;
  margin-top: 24px;
  padding: 16px 32px;
  background: var(--gradient-brand);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-analyze::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-analyze:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(59, 130, 246, 0.3), 0 8px 32px rgba(249, 115, 22, 0.2);
}

.btn-analyze:hover::before { opacity: 1; }

.btn-analyze:active { transform: translateY(0); }

.btn-content, .btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════════
   ANALYSIS LOADING STATE
   ═══════════════════════════════════════════════════ */

.analysis-loading {
  animation: fadeInUp 0.6s ease-out;
}

.loading-card {
  text-align: center;
  padding: 60px 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(12px);
}

.loading-athlete-icon {
  margin-bottom: 32px;
}

.jump-silhouette {
  display: inline-block;
  color: var(--ve-blue-light);
  animation: jumpBounce 1.5s ease-in-out infinite;
}

@keyframes jumpBounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-30px); }
  50% { transform: translateY(-25px); }
  70% { transform: translateY(-30px); }
}

.loading-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 32px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.loading-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 340px;
  margin: 0 auto 32px;
  text-align: left;
}

.loading-step {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-dim);
  transition: all 0.5s ease;
}

.loading-step.active {
  color: var(--text);
}

.loading-step.done {
  color: var(--green);
}

.step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
  flex-shrink: 0;
  transition: all 0.5s ease;
}

.loading-step.active .step-dot {
  background: var(--ve-blue);
  box-shadow: 0 0 12px var(--ve-blue-glow);
  animation: pulse 1s ease-in-out infinite;
}

.loading-step.done .step-dot {
  background: var(--green);
  box-shadow: 0 0 12px var(--green-glow);
}

.loading-bar {
  height: 4px;
  background: var(--surface);
  border-radius: 2px;
  overflow: hidden;
  max-width: 400px;
  margin: 0 auto;
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: width 0.5s ease;
}

/* ═══════════════════════════════════════════════════
   ANALYSIS RESULT
   ═══════════════════════════════════════════════════ */

.analysis-result {
  animation: fadeInUp 0.8s ease-out;
}

.result-header {
  text-align: center;
  margin-bottom: 32px;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.result-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.result-timestamp {
  font-size: 13px;
  color: var(--text-dim);
}

.result-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
  line-height: 1.8;
  font-size: 15px;
}

/* Markdown styling within results */
.result-body h1, .result-body h2 {
  font-size: 20px;
  font-weight: 800;
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-body h1:first-child, .result-body h2:first-child {
  margin-top: 0;
}

.result-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ve-blue-light);
  margin: 24px 0 12px;
}

.result-body h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--jgh-orange-light);
  margin: 20px 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.result-body p {
  margin-bottom: 14px;
  color: var(--text-secondary);
}

.result-body strong {
  color: var(--text);
  font-weight: 700;
}

.result-body ul, .result-body ol {
  margin: 12px 0;
  padding-left: 24px;
}

.result-body li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.result-body li strong {
  color: var(--text);
}

.result-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}

.result-body code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--jgh-orange-light);
}

.result-body blockquote {
  border-left: 3px solid var(--ve-blue);
  padding: 12px 20px;
  margin: 16px 0;
  background: rgba(59, 130, 246, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.result-body blockquote p {
  color: var(--text);
  margin-bottom: 0;
}

/* Result Actions */
.result-actions {
  text-align: center;
  margin-top: 32px;
}

.btn-new {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-new:hover {
  background: var(--surface-hover);
  border-color: var(--ve-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */

.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px;
  font-size: 12px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
}

/* ═══════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */

@media (max-width: 640px) {
  .main { padding: 32px 16px 60px; }

  .form-grid { grid-template-columns: 1fr; }

  .upload-zone { padding: 40px 24px; }

  .loading-card { padding: 40px 24px; }

  .result-body { padding: 24px; }

  .header-inner { gap: 12px; }

  .logo-ve { height: 22px; }

  .jgh-text { font-size: 9px; letter-spacing: 2px; }
  .jgh-high { font-size: 14px; letter-spacing: 4px; }
}

/* ═══════════════════════════════════════════════════
   CORE REFERENCES — Top section of the Knowledge Base tab
   ═══════════════════════════════════════════════════ */
.kb-core-section {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.06), rgba(59, 130, 246, 0.02));
  border: 1px solid rgba(59, 130, 246, 0.22);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 28px;
}

.kb-core-header {
  margin-bottom: 16px;
}

.kb-core-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.kb-core-count {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-radius: 100px;
  letter-spacing: 0.4px;
}

.kb-core-sub {
  margin: 6px 0 0;
  font-size: 12.5px;
  color: var(--text-dim);
}

.kb-core-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kb-core-doc {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.kb-core-doc:hover {
  border-color: rgba(59, 130, 246, 0.4);
}

.kb-core-doc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  user-select: none;
}

.kb-core-doc-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.kb-core-doc-tag {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  background: rgba(59, 130, 246, 0.18);
  color: #60a5fa;
  border-radius: 100px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.kb-core-doc-sub {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-dim);
}

.kb-core-doc-content {
  display: none;
  padding: 0 16px 16px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-dim);
  white-space: pre-wrap;
  max-height: 420px;
  overflow-y: auto;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 0;
}

.kb-core-doc.open .kb-core-doc-content {
  display: block;
}

.kb-section-divider {
  padding: 8px 0 18px;
  border-top: 1px dashed var(--border);
  margin-top: 8px;
}

.kb-section-divider-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-top: 16px;
}

.kb-section-divider-sub {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--text-dim);
}

/* ═══════════════════════════════════════════════════
   VIEW TOGGLE — Coach vs Athlete
   ═══════════════════════════════════════════════════ */
.view-toggle {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px;
  margin: 4px 0 24px;
  gap: 4px;
}

.view-toggle-btn {
  padding: 9px 22px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 600;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.2px;
}

.view-toggle-btn:hover {
  color: var(--text);
}

.view-toggle-btn.active {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: white;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.history-view-toggle {
  margin: 0 0 20px;
}

/* ═══════════════════════════════════════════════════
   DOWNLOAD PDF BUTTON (result actions)
   ═══════════════════════════════════════════════════ */
.result-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 10px;
  color: #60a5fa;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
}

.btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 12px;
}

/* ═══════════════════════════════════════════════════
   BATCH ANALYSIS TAB
   ═══════════════════════════════════════════════════ */
.batch-upload-zone {
  background: rgba(15, 23, 42, 0.45);
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.batch-upload-zone:hover,
.batch-upload-zone.drag {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.06);
}

.batch-upload-zone .upload-icon {
  color: #60a5fa;
}

.batch-upload-zone .upload-text strong {
  display: block;
  font-size: 16px;
  color: var(--text);
  margin-bottom: 6px;
}

.batch-upload-zone .upload-text span {
  display: block;
  font-size: 12.5px;
  color: var(--text-dim);
}

.batch-queue {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 24px;
}

.batch-queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.batch-queue-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.batch-queue-header span {
  font-size: 12px;
  color: var(--text-dim);
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.12);
  border-radius: 100px;
  color: #60a5fa;
  font-weight: 600;
}

.batch-queue-item {
  display: grid;
  grid-template-columns: 32px 1fr 2fr auto auto;
  gap: 14px;
  align-items: center;
  padding: 12px;
  background: rgba(30, 41, 59, 0.35);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  transition: all 0.2s ease;
}

.batch-queue-item.status-running {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(59, 130, 246, 0.05);
}

.batch-queue-item.status-done {
  border-color: rgba(16, 185, 129, 0.35);
}

.batch-queue-item.status-error {
  border-color: rgba(239, 68, 68, 0.4);
}

.batch-queue-item-index {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
}

.batch-queue-item-filename {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-queue-item-filesize {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.batch-queue-item-fields {
  display: grid;
  grid-template-columns: 2fr 1fr 1.3fr;
  gap: 8px;
}

.batch-queue-item-fields input {
  padding: 8px 12px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 12.5px;
  font-family: inherit;
}

.batch-queue-item-fields input:focus {
  outline: none;
  border-color: #3b82f6;
  background: rgba(15, 23, 42, 0.9);
}

.batch-status {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.batch-pending {
  background: rgba(100, 116, 139, 0.15);
  color: var(--text-dim);
}

.batch-running {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.batch-done {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}

.batch-error {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.spinner-small {
  display: inline-block;
  width: 10px;
  height: 10px;
  border: 2px solid rgba(59, 130, 246, 0.3);
  border-top-color: #60a5fa;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.batch-queue-item-remove {
  width: 28px;
  height: 28px;
  border: none;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: all 0.15s ease;
}

.batch-queue-item-remove:hover {
  background: rgba(239, 68, 68, 0.25);
}

.batch-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.batch-results {
  margin-top: 10px;
}

.batch-result-card {
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 10px;
  transition: border-color 0.15s ease;
}

.batch-result-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
}

.batch-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.batch-result-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.batch-result-meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}

.batch-result-actions {
  display: flex;
  gap: 8px;
}

@media (max-width: 768px) {
  .batch-queue-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .batch-queue-item-fields {
    grid-template-columns: 1fr;
  }
}