/* ==========================================================================
   CONTEST ATLAS — DESIGN SYSTEM & STUDIO STYLES
   Short-Form Submission, Eligibility & Deadline Control for Writers
   ========================================================================== */

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

:root {
  /* EDITORIAL TYPOGRAPHY STACKS (100% Offline & Local System) */
  --font-display: Charter, 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, 'Times New Roman', serif;
  --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI Variable', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Mono', 'Courier Prime', 'Courier New', Consolas, 'Liberation Mono', monospace;
  --font-prose: Charter, 'Iowan Old Style', 'Palatino Linotype', Georgia, 'Times New Roman', serif;

  /* BRAND 4-QUADRANT PALETTE (CONTEST ATLAS PALETTE) */
  --brand-deep-berry: #7b1e42;
  --brand-burnt-coral: #d95c43;
  --brand-muted-violet: #5c4d7d;
  --brand-warm-saffron: #d9822b;

  /* THEME TOKENS — DARK (DEFAULT: CALM CONTEMPLATIVE STUDIO) */
  --bg-app: #0e0f13;
  --bg-surface: #15171d;
  --bg-surface-elevated: #1d212b;
  --bg-surface-hover: #262c3a;
  --bg-sidebar: #121419;
  --bg-canvas: #0a0b0e;
  --bg-input: #14161d;
  --bg-banner: rgba(123, 30, 66, 0.12);
  
  --border-subtle: #202430;
  --border-medium: #2e3547;
  --border-focus: #7b1e42;
  --border-berry: #7b1e42;

  --text-prose: #eceae5;
  --text-primary: #f8fafc;
  --text-secondary: #9aa2b4;
  --text-muted: #646d82;

  /* STATUS & ACCENTS */
  --status-ready-bg: rgba(16, 185, 129, 0.12);
  --status-ready-text: #6ee7b7;
  --status-ready-border: #059669;

  --status-attention-bg: rgba(217, 130, 43, 0.12);
  --status-attention-text: #fcd34d;
  --status-attention-border: #d9822b;

  --status-ineligible-bg: rgba(217, 92, 67, 0.14);
  --status-ineligible-text: #fda4af;
  --status-ineligible-border: #d95c43;

  --status-verify-bg: rgba(92, 77, 125, 0.18);
  --status-verify-text: #c4b5fd;
  --status-verify-border: #5c4d7d;

  /* DIFF COLORS */
  --diff-added-bg: rgba(16, 185, 129, 0.16);
  --diff-added-text: #86efac;
  --diff-removed-bg: rgba(217, 92, 67, 0.18);
  --diff-removed-text: #fca5a5;

  --manuscript-font: var(--font-prose);
  --manuscript-size: 1.14rem;
  --manuscript-line-height: 1.8;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* LIGHT THEME (WARM EDITORIAL WORKSPACE) */
[data-theme="light"] {
  --bg-app: #f5f3ec;
  --bg-surface: #eae6dc;
  --bg-surface-elevated: #ffffff;
  --bg-surface-hover: #f3efe6;
  --bg-sidebar: #ece8de;
  --bg-canvas: #faf8f2;
  --bg-input: #ffffff;
  --bg-banner: rgba(123, 30, 66, 0.06);

  --border-subtle: #dcd4c3;
  --border-medium: #c6bca7;
  --border-focus: #7b1e42;
  --border-berry: #7b1e42;

  --text-prose: #1e1f22;
  --text-primary: #111317;
  --text-secondary: #4a505e;
  --text-muted: #798092;

  /* STATUS & ACCENTS */
  --status-ready-bg: #e6f9ed;
  --status-ready-text: #166534;
  --status-ready-border: #22c55e;

  --status-attention-bg: #fef3c7;
  --status-attention-text: #92400e;
  --status-attention-border: #d9822b;

  --status-ineligible-bg: #fee2e2;
  --status-ineligible-text: #991b1b;
  --status-ineligible-border: #d95c43;

  --status-verify-bg: #ede9fe;
  --status-verify-text: #5b21b6;
  --status-verify-border: #5c4d7d;

  --diff-added-bg: #dcfce7;
  --diff-added-text: #15803d;
  --diff-removed-bg: #fee2e2;
  --diff-removed-text: #b91c1c;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.09);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.14);
}

body {
  font-family: var(--font-ui);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 13.5px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ACCESSIBLE FOCUS VISIBLE */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* APP HEADER & BRAND */
.app-header {
  min-height: 52px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 0.75rem;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  user-select: none;
  background: transparent;
  border: none;
  padding: 0.25rem 0.4rem;
  border-radius: 6px;
  text-align: left;
  transition: background-color 0.15s ease;
  min-height: 38px;
  flex-shrink: 0;
}

.brand-section:hover {
  background-color: var(--bg-surface-hover);
}

.brand-mark-svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.brand-quad-1 { fill: var(--brand-deep-berry); }
.brand-quad-2 { fill: var(--brand-burnt-coral); }
.brand-quad-3 { fill: var(--brand-muted-violet); }
.brand-quad-4 { fill: var(--brand-warm-saffron); }

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.brand-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: -0.01em;
}

/* PRIMARY NAVIGATION */
.primary-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  min-width: 0;
  flex-shrink: 1;
}

.primary-nav::-webkit-scrollbar {
  display: none;
}

.nav-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.38rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  transition: all 0.15s ease;
  white-space: nowrap;
  min-height: 34px;
  position: relative;
  flex-shrink: 0;
}

.nav-tab-btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  opacity: 0.75;
  transition: opacity 0.15s ease;
}

.nav-tab-btn:hover {
  background-color: var(--bg-surface-hover);
  color: var(--text-primary);
}

.nav-tab-btn:hover svg {
  opacity: 1;
}

/* HIGH-CONTRAST DISTINCT ACTIVE NAV TAB */
.nav-tab-btn.active {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-medium);
  border-bottom: 2px solid var(--brand-deep-berry);
  box-shadow: 0 -2px 0 0 var(--brand-burnt-coral) inset, var(--shadow-sm);
  font-weight: 600;
}

.nav-tab-btn.active svg {
  opacity: 1;
  color: var(--brand-burnt-coral);
}

/* HEADER UTILITY CLUSTER */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.utility-cluster {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-surface-elevated);
  padding: 0.2rem 0.35rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.btn-utility {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0.25rem 0.55rem;
  font-size: 0.76rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 28px;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.btn-utility svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.85;
}

.btn-utility:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.btn-utility:hover svg {
  opacity: 1;
}

/* HEADER TIER PILL */
.pro-tier-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.22rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.74rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.pro-tier-pill:hover {
  border-color: var(--brand-warm-saffron);
  background: var(--bg-surface-hover);
}

.pro-tier-pill.pro-active {
  background: rgba(110, 231, 183, 0.12);
  border-color: rgba(110, 231, 183, 0.35);
  cursor: default;
}

/* RESPONSIVE HEADER MEDIA QUERIES */
@media (max-width: 1200px) {
  .brand-subtitle {
    display: none;
  }
  .btn-utility span {
    display: none;
  }
  .btn-utility {
    padding: 0.25rem 0.45rem;
  }
}

@media (max-width: 960px) {
  .app-header {
    flex-wrap: wrap;
    padding: 0.5rem 0.85rem 0.35rem 0.85rem;
    min-height: auto;
    gap: 0.5rem 0.75rem;
  }
  
  .brand-section {
    order: 1;
  }
  
  .header-actions {
    order: 2;
    margin-left: auto;
  }
  
  .primary-nav {
    order: 3;
    width: 100%;
    flex: 1 0 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.25rem;
    gap: 0.35rem;
    mask-image: linear-gradient(to right, black calc(100% - 24px), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black calc(100% - 24px), transparent 100%);
  }
  
  .nav-tab-btn {
    padding: 0.35rem 0.65rem;
    font-size: 0.8rem;
    flex-shrink: 0;
  }
}

@media (max-width: 600px) {
  .app-header {
    padding: 0.4rem 0.6rem 0.3rem 0.6rem;
  }
  
  .brand-wordmark {
    font-size: 0.95rem;
  }
  
  .brand-mark-svg {
    width: 20px;
    height: 20px;
  }
  
  .pro-tier-pill {
    padding: 0.18rem 0.45rem;
    font-size: 0.7rem;
  }
}

/* BUTTONS */
.btn {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  transition: all 0.15s ease;
  user-select: none;
  text-decoration: none;
  min-height: 34px;
}

.btn:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--text-muted);
}

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

/* BURGUNDY PRIMARY ACTIONS */
.btn-primary {
  background-color: var(--brand-deep-berry);
  color: #ffffff;
  border-color: var(--brand-deep-berry);
  box-shadow: 0 1px 3px rgba(123, 30, 66, 0.4);
}

.btn-primary:hover {
  background-color: #962551;
  border-color: #962551;
  color: #ffffff;
}

.btn-ghost {
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-disabled, .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed !important;
  pointer-events: none;
  background-color: var(--bg-surface) !important;
  border-color: var(--border-subtle) !important;
  color: var(--text-muted) !important;
  box-shadow: none !important;
}

.btn-saffron {
  background-color: var(--brand-warm-saffron);
  color: #ffffff;
  border-color: var(--brand-warm-saffron);
  box-shadow: 0 1px 3px rgba(217, 130, 43, 0.3);
}

.btn-saffron:hover {
  background-color: #bd7122;
}

.btn-sm {
  padding: 0.25rem 0.6rem;
  font-size: 0.76rem;
  min-height: 28px;
}

.btn-icon {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  background-color: var(--bg-surface-hover);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-danger {
  background-color: rgba(217, 92, 67, 0.15);
  color: #f87171;
  border-color: var(--brand-burnt-coral);
}

.btn-danger:hover {
  background-color: var(--brand-burnt-coral);
  color: #ffffff;
}

/* APP MAIN SHELL */
.app-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
  overflow: hidden;
}

/* MAIN VIEW CONTAINER */
.view-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
}

.view-panel.active {
  display: block;
}

/* TWO-COLUMN STUDIO LAYOUT */
.studio-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: calc(100vh - 56px);
  overflow: hidden;
}

.studio-sidebar {
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background-color: var(--bg-sidebar);
  z-index: 10;
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.sidebar-list {
  list-style: none;
  padding: 0.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.sidebar-item {
  padding: 0.75rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-height: 48px;
}

.sidebar-item:hover {
  background-color: var(--bg-surface-hover);
}

.sidebar-item.active {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.item-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.item-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-meta {
  font-size: 0.76rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.studio-content {
  background-color: var(--bg-canvas);
  overflow-y: auto;
  padding: 1.75rem 2.25rem;
}

/* SECTION HEADERS */
.section-header {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.2;
}

.section-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  line-height: 1.4;
}

/* CARDS */
.card {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 1.25rem 1.35rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* WORKFLOW STEPPER BAR */
.stepper-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-indicator.active .step-num {
  background: var(--brand-deep-berry);
  border-color: var(--brand-deep-berry);
  color: #ffffff;
}

.step-connector {
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
  margin: 0 0.25rem;
}

/* OPTIONAL DETAILS SECTION */
.optional-details-wrapper {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border-subtle);
}

.optional-details-header {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

/* COMPACT WELCOME HERO (35-40% reduced height, refined studio style) */
.welcome-hero {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--brand-deep-berry);
  border-radius: 8px;
  padding: 0.95rem 1.35rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.welcome-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.welcome-tagline {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
  max-width: 620px;
}

.welcome-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* STATUS PILLS & BADGES */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.badge-ready {
  background-color: var(--status-ready-bg);
  color: var(--status-ready-text);
  border-color: var(--status-ready-border);
}

.badge-attention {
  background-color: var(--status-attention-bg);
  color: var(--status-attention-text);
  border-color: var(--status-attention-border);
}

.badge-ineligible {
  background-color: var(--status-ineligible-bg);
  color: var(--status-ineligible-text);
  border-color: var(--status-ineligible-border);
}

.badge-verify {
  background-color: var(--status-verify-bg);
  color: var(--status-verify-text);
  border-color: var(--status-verify-border);
}

.badge-neutral {
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border-color: var(--border-medium);
}

.badge-berry {
  background-color: rgba(123, 30, 66, 0.2);
  color: #fda4af;
  border-color: var(--brand-deep-berry);
}

.badge-saffron {
  background-color: rgba(217, 130, 43, 0.18);
  color: #fcd34d;
  border-color: var(--brand-warm-saffron);
}

/* FORM CONTROLS */
.form-group {
  margin-bottom: 0.85rem;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-label .badge-step {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--brand-deep-berry);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background-color: var(--bg-input);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  padding: 0.48rem 0.7rem;
  border-radius: 6px;
  font-size: 0.86rem;
  font-family: var(--font-ui);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  min-height: 38px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--border-focus);
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
  line-height: 1.5;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.86rem;
  cursor: pointer;
  user-select: none;
  min-height: 30px;
}

.checkbox-label input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--brand-deep-berry);
}

/* VERSION LINEAGE TREE */
.version-tree {
  margin-top: 0.75rem;
  padding-left: 0.5rem;
  border-left: 2px solid var(--border-medium);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.version-node {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.75rem 0.95rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.version-node:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-surface-hover);
}

.version-node.active {
  border-color: var(--brand-warm-saffron);
  box-shadow: 0 0 0 1px var(--brand-warm-saffron);
}

.version-node.locked {
  border-left: 3px solid var(--brand-deep-berry);
}

.version-node-title {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.version-node-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* TIMEZONE SAFETY BANNER */
.timezone-badge {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.tz-col {
  display: flex;
  flex-direction: column;
}

.tz-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tz-time {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 0.15rem;
}

/* ELIGIBILITY & PACKAGE CHECK RESULTS CARD (Tightened & High-Contrast) */
.package-check-hero {
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  padding: 1.15rem 1.35rem;
  margin-top: 0.85rem;
  margin-bottom: 1rem;
  background-color: var(--bg-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.package-check-hero.ready {
  border-color: var(--status-ready-border);
  background-color: rgba(16, 185, 129, 0.05);
}

.package-check-hero.attention {
  border-color: var(--status-attention-border);
  background-color: rgba(217, 130, 43, 0.05);
}

.package-check-hero.ineligible {
  border-color: var(--status-ineligible-border);
  background-color: rgba(217, 92, 67, 0.06);
}

.package-check-hero.verify {
  border-color: var(--status-verify-border);
  background-color: rgba(92, 77, 125, 0.08);
}

.diagnostic-banner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.diagnostic-headline {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.diagnostic-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.diagnostic-item:last-child {
  border-bottom: none;
}

.diagnostic-icon {
  font-size: 1.05rem;
  line-height: 1;
  margin-top: 0.15rem;
  font-weight: 700;
  flex-shrink: 0;
}

.diagnostic-content {
  flex: 1;
}

.diagnostic-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.diagnostic-detail {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
  line-height: 1.45;
}

/* ANONYMITY SCANNER FINDINGS */
.anonymity-box {
  border-radius: 6px;
  padding: 0.85rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
}

.anonymity-clean {
  background-color: var(--status-ready-bg);
  border: 1px solid var(--status-ready-border);
  color: var(--status-ready-text);
}

.anonymity-warn {
  background-color: var(--status-ineligible-bg);
  border: 1px solid var(--status-ineligible-border);
  color: var(--status-ineligible-text);
}

.anonymity-match-item {
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: rgba(0,0,0,0.2);
  padding: 0.3rem 0.5rem;
  border-radius: 4px;
}

/* CALM DEADLINE DASHBOARD */
.deadline-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.deadline-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  position: relative;
  transition: all 0.15s ease;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.deadline-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.deadline-card.urgent {
  border-left: 4px solid var(--brand-warm-saffron);
}

.deadline-card.today {
  border-left: 4px solid var(--brand-burnt-coral);
}

.deadline-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.deadline-opp-name {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.deadline-org {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.deadline-pill {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-warm-saffron);
  white-space: nowrap;
}

/* SPEND TRACKER */
.spend-widget {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1rem 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.spend-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.spend-amount {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* FROZEN REQUIREMENTS SNAPSHOT BADGE */
.snapshot-badge-bar {
  background-color: rgba(92, 77, 125, 0.15);
  border: 1px solid var(--brand-muted-violet);
  border-radius: 6px;
  padding: 0.75rem 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* WITHDRAWAL ASSISTANT BANNER */
.withdrawal-alert-banner {
  background-color: var(--status-ineligible-bg);
  border: 1px solid var(--status-ineligible-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.withdrawal-alert-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--status-ineligible-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

/* MODALS */
.modal-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(3px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.active {
  display: flex;
}

.modal-dialog {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-dialog.lg {
  max-width: 900px;
}

.modal-header {
  padding: 1.1rem 1.35rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.35rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 0.95rem 1.35rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.6rem;
  background-color: var(--bg-surface-elevated);
}

/* FIRST RUN ONBOARDING */
.welcome-hero {
  background: linear-gradient(135deg, rgba(123, 30, 66, 0.18) 0%, rgba(92, 77, 125, 0.18) 100%);
  border: 1px solid var(--border-berry);
  border-radius: 8px;
  padding: 2.25rem 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.welcome-title {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
}

.welcome-tagline {
  font-size: 0.98rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 1.6rem auto;
  line-height: 1.5;
}

.welcome-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* PROSE MANUSCRIPT DISPLAY */
.manuscript-editor {
  font-family: var(--manuscript-font);
  font-size: var(--manuscript-size);
  line-height: var(--manuscript-line-height);
  color: var(--text-prose);
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1.6rem;
  min-height: 250px;
  width: 100%;
  resize: vertical;
  outline: none;
}

.manuscript-editor:focus {
  border-color: var(--border-focus);
}

/* DIFF COMPARISON VIEW */
.diff-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
}

.diff-pane {
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1rem;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.diff-added {
  background-color: var(--diff-added-bg);
  color: var(--diff-added-text);
}

.diff-removed {
  background-color: var(--diff-removed-bg);
  color: var(--diff-removed-text);
  text-decoration: line-through;
}

/* TABLE STYLES & RESPONSIVENESS */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.atlas-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.atlas-table th {
  text-align: left;
  padding: 0.75rem 0.85rem;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-medium);
  white-space: nowrap;
}

.atlas-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.atlas-table tr:hover td {
  background-color: var(--bg-surface-hover);
}

/* EMPTY STATES */
.empty-state {
  padding: 1.75rem 1.25rem;
  text-align: center;
  color: var(--text-muted);
}

.empty-state.compact {
  padding: 1.15rem 1rem;
}

.empty-icon {
  font-size: 1.75rem;
  margin-bottom: 0.4rem;
  opacity: 0.65;
}

.empty-state.compact .empty-icon {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.empty-text {
  font-size: 0.86rem;
  max-width: 440px;
  margin: 0 auto;
  line-height: 1.45;
}

/* UTILITY CLASSES */
.text-berry { color: var(--brand-deep-berry); }
.text-coral { color: var(--brand-burnt-coral); }
.text-violet { color: var(--brand-muted-violet); }
.text-saffron { color: var(--brand-warm-saffron); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.76rem; }
.font-mono { font-family: var(--font-mono); }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }

/* ==========================================================================
   MOBILE & TABLET RESPONSIVE REFINEMENTS
   ========================================================================== */
@media (max-width: 992px) {
  .view-panel {
    padding: 1.25rem 1rem;
  }
  .studio-content {
    padding: 1.25rem 1.25rem;
  }
}

@media (max-width: 768px) {
  .app-header {
    padding: 0.5rem 0.75rem;
    height: auto;
    flex-wrap: wrap;
  }

  .brand-section {
    padding: 0.25rem;
  }

  .brand-subtitle {
    display: none;
  }

  .primary-nav {
    order: 3;
    width: 100%;
    padding: 0.35rem 0 0.2rem 0;
    border-top: 1px solid var(--border-subtle);
    margin-top: 0.25rem;
    gap: 0.25rem;
  }

  .nav-tab-btn {
    font-size: 0.78rem;
    padding: 0.4rem 0.6rem;
    min-height: 36px;
  }

  .app-container {
    height: auto;
    min-height: calc(100vh - 100px);
    overflow: visible;
  }

  .studio-layout {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }

  .studio-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    max-height: 300px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .diff-container {
    grid-template-columns: 1fr;
  }

  .modal-dialog {
    max-width: 96vw;
    max-height: 94vh;
    border-radius: 6px;
  }

  .modal-header {
    padding: 0.85rem 1rem;
  }

  .modal-body {
    padding: 1rem;
  }

  .modal-footer {
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
  }

  .welcome-hero {
    margin: 1rem 0.75rem 0 0.75rem;
    padding: 1.5rem 1rem;
  }

  .welcome-title {
    font-size: 1.5rem;
  }

  .welcome-actions {
    flex-direction: column;
    width: 100%;
  }

  .welcome-actions .btn {
    width: 100%;
  }
}

/* ==========================================================================
   PRO UPGRADE MODAL & TIER BADGES ($19 LIFETIME ACCESS)
   ========================================================================== */

.pro-tier-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.2rem 0.6rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.76rem;
}

.pro-tier-pill:hover {
  border-color: var(--brand-warm-saffron);
  transform: translateY(-1px);
}

.pro-tier-pill.pro-active {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.4);
  cursor: default;
}

.pro-tier-pill.pro-active:hover {
  transform: none;
}

.pro-hero {
  text-align: center;
  padding: 1.5rem 1rem 1.25rem 1rem;
  background: linear-gradient(135deg, rgba(123, 30, 66, 0.25) 0%, rgba(217, 92, 67, 0.15) 50%, rgba(92, 77, 125, 0.25) 100%);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(217, 130, 43, 0.3);
}

.pro-hero-title {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.pro-hero-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 1.25rem auto;
  line-height: 1.45;
}

.pro-pricing-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.5rem 1.25rem;
  background: var(--bg-surface);
  border: 2px solid var(--brand-warm-saffron);
  border-radius: 9999px;
  margin-bottom: 0.5rem;
  box-shadow: 0 4px 16px rgba(217, 130, 43, 0.25);
}

.pro-price-original {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.pro-price-current {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--brand-warm-saffron);
}

.pro-price-cadence {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pro-features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
  .pro-features-grid {
    grid-template-columns: 1fr;
  }
}

.pro-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: var(--bg-surface-elevated);
  padding: 0.75rem 0.85rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}

.pro-feature-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.pro-feature-title {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.pro-feature-desc {
  font-size: 0.76rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

.pro-guarantee-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.75rem;
}

.pro-activation-toggle {
  text-align: center;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-subtle);
  font-size: 0.82rem;
}

.pro-activation-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}

.pro-limit-banner {
  background: rgba(217, 130, 43, 0.12);
  border: 1px solid var(--brand-warm-saffron);
  border-radius: 6px;
  padding: 0.65rem 0.85rem;
  margin: 0.5rem 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.82rem;
}