/* ==========================================================================
   ScrumPDLC Studio - Professional Student Agile Design System
   Modern Glassmorphism, Dynamic Animations & Dual Themes
   ========================================================================== */

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

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(31, 41, 55, 0.95);
  --bg-elevated: #242f42;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.4);
  --border-subtle: rgba(255, 255, 255, 0.05);

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --text-invert: #0b0f19;

  /* Accent Colors */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.15);
  --primary-glow: rgba(99, 102, 241, 0.35);

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --info: #0ea5e9;
  --info-bg: rgba(14, 165, 233, 0.15);
  --purple: #a855f7;
  --purple-bg: rgba(168, 85, 247, 0.15);

  /* Glassmorphism & Shadows */
  --glass-bg: rgba(17, 24, 39, 0.75);
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
  --glass-backdrop: blur(16px);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--primary-glow);

  /* Sizing & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --bg-elevated: #e2e8f0;

  --border-color: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.5);
  --border-subtle: rgba(0, 0, 0, 0.05);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-invert: #ffffff;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: 1px solid rgba(0, 0, 0, 0.08);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.06) 0px, transparent 50%);
  background-attachment: fixed;
}

/* Accessibility: Skip to Main Content Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  background: var(--primary);
  color: #ffffff !important;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.875rem;
  z-index: 10000;
  box-shadow: var(--shadow-lg);
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  border: 2px solid #ffffff;
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--primary-glow);
  outline-offset: 3px;
}

/* Accessibility: Universal Focus Visible Styling */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

a {
  color: var(--primary);
  text-decoration: none;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border-bottom: var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary) 0%, #a855f7 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  box-shadow: var(--shadow-glow);
}

.brand-info h1 {
  font-size: 1.15rem;
  line-height: 1.2;
}

.brand-info .badge {
  font-size: 0.68rem;
  padding: 0.1rem 0.45rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* Team Switcher */
.team-switcher-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-tertiary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.team-avatar-badge {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.team-select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  outline: none;
}

.team-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Navigation Tabs Bar */
.nav-tabs-bar {
  display: flex;
  align-items: center;
  overflow-x: auto;
  padding: 0 1.5rem;
  gap: 0.35rem;
  border-top: 1px solid var(--border-subtle);
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.nav-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.nav-tab-badge {
  padding: 0.1rem 0.4rem;
  font-size: 0.7rem;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
}

/* ==========================================================================
   Scrum Sensei Educational Context Banner
   ========================================================================== */

.sensei-banner {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.12) 0%, rgba(168, 85, 247, 0.08) 100%);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin: 1.25rem 1.5rem 0.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  animation: fadeIn 0.4s ease;
}

.sensei-content {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.sensei-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.sensei-text h4 {
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
}

.sensei-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.sensei-btn {
  white-space: nowrap;
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
}

/* ==========================================================================
   Breadcrumbs Navigation Bar
   ========================================================================== */

.app-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-muted);
  overflow-x: auto;
  white-space: nowrap;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-size: 0.8rem;
  padding: 0;
  cursor: default;
}

.breadcrumb-item.clickable {
  cursor: pointer;
}

.breadcrumb-item.clickable:hover {
  color: var(--primary);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--text-muted);
  opacity: 0.5;
  font-size: 0.75rem;
  user-select: none;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Layout & Container
   ========================================================================== */

.main-content {
  padding: 1.25rem 1.5rem 3rem;
  max-width: 1600px;
  margin: 0 auto;
}

.view-container {
  display: none;
}

.view-container.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* View Header */
.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.view-title-group h2 {
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.view-title-group p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.view-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==========================================================================
   Buttons & UI Elements
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: white;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-elevated);
  border-color: var(--border-highlight);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-success {
  background: var(--success);
  color: white;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Badges & Pills */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-purple { background: var(--purple-bg); color: var(--purple); }
.badge-superuser { background: rgba(225, 29, 72, 0.15); color: #f43f5e; border: 1px solid rgba(244, 63, 94, 0.35); font-weight: 700; }

/* Priority Colors */
.priority-highest { color: #ef4444; }
.priority-high { color: #f97316; }
.priority-medium { color: #3b82f6; }
.priority-low { color: #10b981; }

/* ==========================================================================
   Scrum Board (Kanban)
   ========================================================================== */

.board-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.85rem;
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.search-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  outline: none;
  width: 220px;
}

.search-input:focus {
  border-color: var(--primary);
}

.select-filter {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

/* Standardized Listing Filters Toolbar (Reusable across Backlog, Sprints, Audit Logs, Board) */
.listing-filters-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.85rem;
  background: var(--bg-card);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
}

.listing-filters-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  flex: 1;
}

.listing-filters-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.filter-search-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  outline: none;
  min-width: 220px;
  transition: border-color var(--transition-fast);
}

.filter-search-input:focus {
  border-color: var(--primary);
}

.filter-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.filter-select:focus {
  border-color: var(--primary);
}

.btn-filter-reset {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.btn-filter-reset:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

/* Board Grid */
.board-columns {
  display: grid;
  grid-template-columns: repeat(5, minmax(260px, 1fr));
  gap: 1rem;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 1.5rem;
}

.board-col {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  min-height: 520px;
  max-height: calc(100vh - 240px);
  transition: border-color var(--transition-fast);
}

.board-col-header {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.col-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 700;
}

.col-count {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.col-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.indicator-backlog { background: #94a3b8; }
.indicator-todo { background: #3b82f6; }
.indicator-inprogress { background: #f59e0b; }
.indicator-inreview { background: #a855f7; }
.indicator-done { background: #10b981; }

.board-col-cards {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  overflow-y: auto;
  transition: background-color var(--transition-fast);
}

.board-col.drag-over .board-col-cards {
  background: rgba(99, 102, 241, 0.08);
  border: 2px dashed var(--primary);
  border-radius: var(--radius-md);
}

/* Story Card */
.story-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  cursor: grab;
  user-select: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.story-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
}

.story-card.dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.epic-pill {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-id {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
}

.card-syntax {
  font-size: 0.78rem;
  color: var(--text-secondary);
  background: var(--bg-primary);
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--primary);
  line-height: 1.3;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.35rem;
  border-top: 1px solid var(--border-subtle);
  margin-top: 0.2rem;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.points-pill {
  background: var(--primary-light);
  color: var(--primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.card-assignee {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.member-avatar-sm {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
}

/* ==========================================================================
   Planning Poker Room
   ========================================================================== */

.poker-container {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.5rem;
}

.poker-table-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
}

.poker-story-display {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  width: 100%;
  text-align: left;
}

.poker-story-display h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.poker-arena {
  width: 100%;
  min-height: 200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(17, 24, 39, 0.4) 70%);
  border: 2px dashed rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  gap: 1rem;
}

.poker-votes-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.poker-vote-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.poker-mini-card {
  width: 50px;
  height: 75px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.poker-mini-card.revealed {
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
  color: white;
  transform: rotateY(360deg);
}

.poker-mini-card.hidden-card {
  background: repeating-linear-gradient(45deg, var(--bg-tertiary), var(--bg-tertiary) 6px, var(--bg-secondary) 6px, var(--bg-secondary) 12px);
  color: transparent;
}

/* Fibonacci Cards Deck */
.poker-deck {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.cards-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

.poker-card-btn {
  width: 58px;
  height: 88px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.poker-card-btn:hover {
  transform: translateY(-6px) scale(1.05);
  border-color: var(--primary);
  box-shadow: 0 8px 16px var(--primary-glow);
  color: var(--primary);
}

.poker-card-btn.selected {
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
  color: white;
  border-color: white;
  transform: translateY(-8px);
  box-shadow: 0 10px 20px var(--primary-glow);
}

/* Poker Sidebar */
.poker-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.poker-story-list {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  max-height: 520px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.poker-item-choice {
  padding: 0.7rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.poker-item-choice:hover {
  border-color: var(--primary);
  background: var(--bg-elevated);
}

.poker-item-choice.active {
  border-color: var(--primary);
  background: var(--primary-light);
}

/* ==========================================================================
   Daily Standup & Retrospectives
   ========================================================================== */

.standup-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
}

.standup-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.standup-feed {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.standup-entry-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: border-color var(--transition-fast);
}

.standup-entry-card.has-blocker {
  border-left: 4px solid var(--danger);
}

.standup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.standup-user {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.standup-q {
  margin-bottom: 0.65rem;
}

.standup-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.standup-ans {
  font-size: 0.875rem;
  color: var(--text-primary);
  line-height: 1.4;
}

/* Retrospective 4-Quadrant Board */
.retro-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.retro-col {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  min-height: 550px;
}

.retro-col-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.retro-col-items {
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  overflow-y: auto;
}

.retro-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform var(--transition-fast);
}

.retro-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-highlight);
}

.retro-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  padding-top: 0.4rem;
  border-top: 1px solid var(--border-subtle);
}

.vote-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: all var(--transition-fast);
}

.vote-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* ==========================================================================
   Agile Academy Hub (Education for Students)
   ========================================================================== */

.academy-hero {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.academy-hero-text h2 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.academy-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.academy-subtab {
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.academy-subtab.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* 4 Agile Manifesto Values Cards */
.manifesto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.manifesto-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.manifesto-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}

.manifesto-val-left {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.manifesto-over {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.manifesto-val-right {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: line-through;
  opacity: 0.8;
}

.manifesto-student-note {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  border-left: 3px solid var(--warning);
}

/* 12 Principles Grid */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.25rem;
}

.principle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
}

.principle-num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.principle-body h4 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.principle-body p {
  font-size: 0.83rem;
  color: var(--text-secondary);
}

.principle-example {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* 5 Scrum Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.value-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

/* Quiz Interface */
.quiz-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.quiz-question-box {
  margin-bottom: 1.5rem;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.6rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quiz-option:hover {
  border-color: var(--primary);
  background: var(--bg-elevated);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.quiz-option.correct {
  border-color: var(--success);
  background: var(--success-bg);
  color: var(--success);
  font-weight: 600;
}

.quiz-option.wrong {
  border-color: var(--danger);
  background: var(--danger-bg);
  color: var(--danger);
}

/* ==========================================================================
   Analytics & Burndown Charts
   ========================================================================== */

.analytics-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.chart-wrapper {
  width: 100%;
  height: 320px;
  position: relative;
}

.chart-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ==========================================================================
   Modals & Popups
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-backdrop.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
}

.close-btn:hover {
  color: var(--text-primary);
}

/* Form Groups */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-textarea, .form-select {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  animation: slideInRight 0.3s ease;
  pointer-events: auto;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--info); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Responsive adjustments */
@media (max-width: 1200px) {
  .retro-board { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(3, 1fr); }
  .analytics-grid { grid-template-columns: 1fr; }
  .poker-container { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .header-top { flex-direction: column; align-items: flex-start; }
  .standup-grid { grid-template-columns: 1fr; }
  .retro-board { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Dedicated Login Page & RBAC Security Styles
   ========================================================================== */

.login-page-container {
  min-height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: radial-gradient(circle at 15% 15%, rgba(79, 70, 229, 0.18), transparent 35%),
              radial-gradient(circle at 85% 85%, rgba(225, 29, 72, 0.14), transparent 35%),
              var(--bg-primary);
  box-sizing: border-box;
}

.login-wrapper {
  width: 100%;
  max-width: 440px;
  animation: fadeIn 0.4s ease-out;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(16px);
}

.login-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, #a855f7 100%);
  font-size: 1.8rem;
  box-shadow: 0 8px 20px -4px rgba(79, 70, 229, 0.5);
  margin-bottom: 0.85rem;
}

.login-title {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin: 0;
}

.login-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.35rem;
}

.login-alert {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  font-weight: 500;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 0.85rem;
  font-size: 0.95rem;
  pointer-events: none;
  opacity: 0.6;
}

.input-with-icon .form-input {
  padding-left: 2.5rem;
  padding-right: 2.5rem;
  width: 100%;
}

.btn-password-toggle {
  position: absolute;
  right: 0.75rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  opacity: 0.6;
  transition: opacity 0.2s;
}

.btn-password-toggle:hover {
  opacity: 1;
}

.btn-block {
  width: 100%;
}

.login-footer {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.73rem;
  color: var(--text-muted);
}

/* Access Denied State */
.access-denied-card {
  background: var(--bg-card);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2rem;
  text-align: center;
  max-width: 600px;
  margin: 3rem auto;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.3);
}

.access-denied-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.access-denied-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--danger);
  margin-bottom: 0.5rem;
}

.access-denied-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   Real-Time Live Sync Indicator & Badge Styles
   ========================================================================== */

.live-sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.3s ease;
  user-select: none;
}

.live-sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.3s ease;
}

.live-sync-badge.connected {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.live-sync-badge.connected .live-sync-dot {
  background-color: #10b981;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.8);
  animation: liveSyncPulse 2s infinite;
}

.live-sync-badge.reconnecting {
  background: rgba(245, 158, 11, 0.12);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.live-sync-badge.reconnecting .live-sync-dot {
  background-color: #f59e0b;
  animation: liveSyncBlink 1s infinite alternate;
}

.live-sync-badge.disconnected {
  background: rgba(107, 114, 128, 0.12);
  color: #9ca3af;
  border: 1px solid rgba(107, 114, 128, 0.25);
}

.live-sync-badge.disconnected .live-sync-dot {
  background-color: #6b7280;
}

@keyframes liveSyncPulse {
  0% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
  70% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); opacity: 0.8; box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@keyframes liveSyncBlink {
  from { opacity: 0.3; }
  to { opacity: 1; }
}

/* ==========================================================================
   Comprehensive Responsive & Mobile Architecture
   ========================================================================== */

/* Prevent accidental horizontal page overflow */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

.app-shell {
  max-width: 100vw;
  overflow-x: hidden;
}

/* Tablet & Mobile Nav Tabs: Smooth Touch-Horizontal Scroll */
.nav-tabs-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.nav-tabs, .nav-tabs-bar {
  display: flex;
  flex-wrap: nowrap;
  min-width: max-content;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  padding: 0.25rem 0.5rem;
}

.nav-tabs::-webkit-scrollbar, .nav-tabs-bar::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  scroll-snap-align: start;
  flex-shrink: 0;
  white-space: nowrap;
  min-height: 44px; /* Accessible touch target */
}

/* Responsive Board Columns */
.board-columns {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  padding-bottom: 1rem;
}

.board-col, .board-column {
  min-width: 290px;
  flex: 1 0 290px;
  scroll-snap-align: start;
}

/* Media Breakpoint: Large Screens to Laptop (<= 1200px) */
@media (max-width: 1200px) {
  .app-container {
    padding: 1rem;
  }
  .header-top {
    gap: 1rem;
  }
}

/* Media Breakpoint: Tablets & Phablets (<= 992px) */
@media (max-width: 992px) {
  .header-top {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }
  .header-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 0.5rem;
  }
  .board-col, .board-column {
    min-width: 280px;
    flex: 0 0 280px;
  }
  .analytics-grid, .standup-grid, .retro-board {
    grid-template-columns: 1fr;
  }
}

/* Media Breakpoint: Small Tablets & Large Phones (<= 768px) */
@media (max-width: 768px) {
  .app-header {
    padding: 0.75rem 1rem;
  }
  .brand h1 {
    font-size: 1.15rem;
  }
  .team-switcher-wrapper {
    width: 100%;
    max-width: 100%;
  }
  .team-select {
    width: 100%;
  }
  .board-col, .board-column {
    min-width: 85vw;
    flex: 0 0 85vw;
  }
  .modal-container {
    width: 95vw;
    max-width: 95vw;
    margin: 1rem auto;
    padding: 1rem;
  }
  .btn {
    min-height: 44px; /* Accessible touch target */
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* Media Breakpoint: Compact Mobile Phones (<= 480px) */
@media (max-width: 480px) {
  .app-container {
    padding: 0.5rem;
  }
  .header-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .live-sync-badge {
    justify-content: center;
    width: 100%;
  }
  #btn-pdlc-reviewer {
    width: 100%;
    justify-content: center;
  }
  .board-col, .board-column {
    min-width: 90vw;
    flex: 0 0 90vw;
  }
  .story-card {
    padding: 0.75rem;
  }
}