frontend/src/index.css

/* ═══════════════════════════════════════════════════════════════════════════
   BLUE-FIN — Global Design System (Vanilla CSS)
   Dark editorial theme · Playfair Display + Inter · Glassmorphism
   ═══════════════════════════════════════════════════════════════════════════ */

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600;1,700&display=swap");

/* ─── CSS Variables ─────────────────────────────────────────────────────── */
:root {
  /* Typography */
  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  --grid-size: 40px;
}

/* Base colors: Dark Theme (Default) */
:root,
[data-theme="dark"] {
  --bg-primary: #1a1a1f;
  --bg-secondary: #212126;
  --bg-surface: #242429;
  --bg-surface-hover: #2a2a30;
  --bg-elevated: #2e2e35;

  --text-primary: #f5f5f5;
  --text-secondary: #b8b8bf;
  --text-muted: #7a7a85;
  --text-inverse: #1a1a1f;

  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-subtle: rgba(59, 130, 246, 0.12);
  --accent-glow: rgba(59, 130, 246, 0.25);

  --success: #22c55e;
  --success-subtle: rgba(34, 197, 94, 0.12);
  --warning: #eab308;
  --warning-subtle: rgba(234, 179, 8, 0.12);
  --danger: #ef4444;
  --danger-subtle: rgba(239, 68, 68, 0.12);

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-strong: rgba(255, 255, 255, 0.2);

  --glass-bg: rgba(36, 36, 41, 0.75);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: 16px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);

  --grid-color: rgba(255, 255, 255, 0.03);
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f1f5f9;
  --bg-elevated: #ffffff;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: rgba(37, 99, 235, 0.1);
  --accent-glow: rgba(37, 99, 235, 0.2);

  --success: #16a34a;
  --success-subtle: rgba(22, 163, 74, 0.1);
  --warning: #d97706;
  --warning-subtle: rgba(217, 119, 6, 0.1);
  --danger: #dc2626;
  --danger-subtle: rgba(220, 38, 38, 0.1);

  --border: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-strong: #94a3b8;

  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.05);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.15);

  --grid-color: rgba(0, 0, 0, 0.04);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

/* Grid background pattern */
.grid-bg {
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
}

/* ─── Typography ────────────────────────────────────────────────────────── */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}
h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
}
h3 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
}

.serif {
  font-family: var(--font-heading);
}
.serif-italic {
  font-family: var(--font-heading);
  font-style: italic;
}
.mono {
  font-family: var(--font-mono);
}

.text-primary {
  color: var(--text-primary);
}
.text-secondary {
  color: var(--text-secondary);
}
.text-muted {
  color: var(--text-muted);
}
.text-accent {
  color: var(--accent);
}
.text-success {
  color: var(--success);
}
.text-warning {
  color: var(--warning);
}
.text-danger {
  color: var(--danger);
}

.label {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

/* ─── Links ─────────────────────────────────────────────────────────────── */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--accent-hover);
}

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 0 48px rgba(59, 130, 246, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-hover);
}
.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 8px 16px;
}
.btn-ghost:hover:not(:disabled) {
  color: var(--text-primary);
  background: var(--bg-surface);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

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

/* ─── Cards ─────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--border-hover);
}

.card-interactive:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-elevated {
  background: var(--bg-elevated);
  box-shadow: var(--shadow-md);
}

/* ─── Glass / Glassmorphism ─────────────────────────────────────────────── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

/* ─── Inputs ────────────────────────────────────────────────────────────── */
.input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  transition: all var(--transition-fast);
  outline: none;
}

.input::placeholder {
  color: var(--text-muted);
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

/* ─── Badges / Pills ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  letter-spacing: 0.02em;
}

.badge-accent {
  background: var(--accent-subtle);
  color: var(--accent);
  border-color: rgba(59, 130, 246, 0.25);
}

.badge-success {
  background: var(--success-subtle);
  color: var(--success);
  border-color: rgba(34, 197, 94, 0.25);
}

.badge-warning {
  background: var(--warning-subtle);
  color: var(--warning);
  border-color: rgba(234, 179, 8, 0.25);
}

.badge-danger {
  background: var(--danger-subtle);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.25);
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border-color: var(--border);
}

/* ─── Progress Bar ──────────────────────────────────────────────────────── */
.progress-track {
  width: 100%;
  height: 4px;
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius-full);
  transition: width 0.5s ease;
}

/* ─── Tables ────────────────────────────────────────────────────────────── */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 10px 16px;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-hover);
}

td {
  padding: 10px 16px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* ─── Scrollbar ─────────────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ─── Layout Utilities ──────────────────────────────────────────────────── */
.page {
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.flex-wrap {
  flex-wrap: wrap;
}
.items-center {
  align-items: center;
}
.items-start {
  align-items: flex-start;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-xs {
  gap: var(--space-xs);
}
.gap-sm {
  gap: var(--space-sm);
}
.gap-md {
  gap: var(--space-md);
}
.gap-lg {
  gap: var(--space-lg);
}
.gap-xl {
  gap: var(--space-xl);
}
.flex-1 {
  flex: 1;
}
.shrink-0 {
  flex-shrink: 0;
}

.grid {
  display: grid;
}
.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.w-full {
  width: 100%;
}
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.whitespace-pre-wrap {
  white-space: pre-wrap;
}
.relative {
  position: relative;
}
.absolute {
  position: absolute;
}
.sticky {
  position: sticky;
}
.hidden {
  display: none;
}
.overflow-hidden {
  overflow: hidden;
}
.overflow-auto {
  overflow: auto;
}
.pointer-events-none {
  pointer-events: none;
}
.select-none {
  user-select: none;
}
.cursor-pointer {
  cursor: pointer;
}
.line-through {
  text-decoration: line-through;
}

/* ─── Animations ────────────────────────────────────────────────────────── */
.page-enter {
  animation: fadeIn 0.3s ease-out;
}

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

.toast-enter {
  animation: slideInRight 0.25s ease-out;
}

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

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.animate-spin {
  animation: spin 1s linear infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Marquee */
.marquee-outer {
  overflow: hidden;
}
.marquee-inner {
  display: flex;
  width: max-content;
  animation: marqueeScroll 32s linear infinite;
}
@keyframes marqueeScroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* Carousel progress */
@keyframes carouselProgress {
  from {
    width: 0%;
  }
  to {
    width: 100%;
  }
}

/* Float animation */
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}
.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ─── Navbar ────────────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1200px;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 0 var(--space-lg);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.navbar-link {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.navbar-link.active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent);
}

/* Body padding when navbar is floating */
.has-navbar {
  padding-top: 88px;
}

/* ─── Section Dividers ──────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  border: none;
}

.divider-accent {
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border: none;
}

/* ─── Drop Zone ─────────────────────────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border-hover);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.dropzone:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.dropzone.dragging {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.dropzone.uploaded {
  border-color: var(--success);
  background: var(--success-subtle);
}

/* ─── Stat Cards ────────────────────────────────────────────────────────── */
.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ─── Tab Bar ───────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: 2px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px;
  overflow-x: auto;
}

.tab-item {
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  border: none;
  background: none;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}

.tab-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-item.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* ─── Visible only on specific screen widths ────────────────────────────── */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .show-mobile-only {
    display: none !important;
  }
}

/* ─── Chart & Score Enhancements ────────────────────────────────────────── */

/* Score tab entrance */
.score-tab-enter > * {
  animation: chartSlideUp 0.5s ease-out both;
}
.score-tab-enter > *:nth-child(1) {
  animation-delay: 0s;
}
.score-tab-enter > *:nth-child(2) {
  animation-delay: 0.1s;
}
.score-tab-enter > *:nth-child(3) {
  animation-delay: 0.2s;
}
.score-tab-enter > *:nth-child(4) {
  animation-delay: 0.3s;
}

@keyframes chartSlideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Interactive score cards */
.score-card-hover {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}
.score-card-hover:hover {
  transform: translateY(-4px);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

/* Shimmer effect on cards */
.card-shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.03) 50%,
    transparent 100%
  );
  transition: left 0.6s ease;
  pointer-events: none;
}
.score-card-hover:hover .card-shimmer {
  left: 100%;
}

/* Stress flipped card animated background */
.stress-flipped-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.08) 0%,
    transparent 60%
  );
  animation: stressFlash 3s ease-in-out infinite;
  pointer-events: none;
}
@keyframes stressFlash {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.8;
  }
}

/* Stress bar fill animation */
.stress-bar-fill {
  animation: stressBarGrow 1s ease-out both;
  animation-delay: 0.5s;
  transform-origin: left;
}
@keyframes stressBarGrow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* Recharts hover enhancements */
.recharts-bar-rectangle {
  transition:
    filter 0.25s ease,
    opacity 0.25s ease;
}

.recharts-radar-polygon {
  transition: fill-opacity 0.3s ease;
}

/* Recharts tooltip animation */
.recharts-tooltip-wrapper {
  transition:
    transform 0.15s ease,
    opacity 0.15s ease !important;
}

/* Recharts active dot pulse */
.recharts-dot.recharts-active-dot circle {
  filter: drop-shadow(0 0 6px currentColor);
}

/* Force graph container glow */
.force-graph-glow {
  box-shadow: inset 0 0 60px rgba(59, 130, 246, 0.04);
}

/* Radar chart label animation */
@keyframes radarFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.recharts-polar-angle-axis-tick text {
  animation: radarFadeIn 0.5s ease-out both;
}

/* Responsive: stack radar + bar on small screens */
@media (max-width: 768px) {
  .score-tab-enter [style*="grid-template-columns: 280px"] {
    grid-template-columns: 1fr !important;
  }
}