/* ============================================================
   CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  --color-bg: #0a0a0f;
  --color-bg-card: #14141f;
  --color-bg-card-hover: #1a1a2a;
  --color-border: #2a2a3a;
  --color-text: #e0e0e8;
  --color-text-muted: #8888a0;

  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --color-primary-glow: rgba(99, 102, 241, 0.3);

  --color-success: #10b981;
  --color-success-glow: rgba(16, 185, 129, 0.3);
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-accent: #8b5cf6;

  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --gradient-card: linear-gradient(145deg, #14141f 0%, #1a1a2a 100%);

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  --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 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--color-primary-glow);

  --font-family:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(
      circle at 20% 80%,
      rgba(99, 102, 241, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(139, 92, 246, 0.08) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: -1;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* ============================================================
   Layout
   ============================================================ */
.app-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--spacing-xl);
  align-items: start;
}

.config-column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.results-column {
  position: sticky;
  top: var(--spacing-lg);
}

@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
  .results-column {
    position: static;
  }
}

/* ============================================================
   Header
   ============================================================ */
.header {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-xl);
}

.logo {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-accent);
  /* -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text; */
  margin-bottom: var(--spacing-sm);
}

.tagline {
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
}

/* ============================================================
   Sections (Cards)
   ============================================================ */
.section {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.section.compact {
  padding: var(--spacing-lg);
}

.section.compact h2 {
  font-size: var(--font-size-lg);
}

.section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.section-header h2 {
  margin-bottom: 0;
}

/* ============================================================
   Inputs
   ============================================================ */
.input-group {
  margin-bottom: var(--spacing-md);
}

.input-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.input-group input,
.input-group select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--font-size-md);
  transition: var(--transition-fast);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.input-group small {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.input-row.three-cols {
  grid-template-columns: 1fr 1fr 1fr;
}

@media (max-width: 600px) {
  .input-row {
    grid-template-columns: 1fr;
  }
  .input-row.three-cols {
    grid-template-columns: 1fr 1fr;
  }
}

.input-with-unit {
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.input-with-unit:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.input-with-unit .unit {
  padding: var(--spacing-sm) var(--spacing-sm);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  min-width: 28px;
  text-align: center;
}

.input-with-unit input {
  flex: 1;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
  min-width: 0;
}

.input-with-unit input:focus {
  box-shadow: none !important;
}

.input-with-unit.right {
  flex-direction: row;
}

.input-with-unit.right .unit {
  order: 1;
}

/* ============================================================
   Checkboxes
   ============================================================ */
.checkbox-group label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  color: var(--color-text);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  accent-color: var(--color-primary);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--color-primary-glow);
}

.btn-add {
  background: transparent;
  border: 1px dashed var(--color-primary);
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-md);
}

.btn-add:hover {
  background: var(--color-primary-glow);
}

.btn-remove {
  background: transparent;
  color: var(--color-danger);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-lg);
  line-height: 1;
}

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

.btn-calculate {
  width: 100%;
  padding: var(--spacing-lg);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

/* ============================================================
   Phase Cards
   ============================================================ */
.phase-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  animation: slideIn 0.3s ease;
  transition: var(--transition-fast);
}

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

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.phase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.phase-header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.phase-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: #fff;
}

.phase-type-toggle {
  display: flex;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 2px;
}

.toggle-option {
  cursor: pointer;
}

.toggle-option input {
  display: none;
}

.toggle-option span {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}

.toggle-option input:checked + span {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================================
   Checkbox inline (DD locks)
   ============================================================ */
.checkbox-inline {
  display: flex;
  align-items: center;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.checkbox-label input {
  accent-color: var(--color-primary);
}

/* ============================================================
   Withdrawal fields
   ============================================================ */
.withdrawal-fields {
  margin-top: var(--spacing-md);
}

.withdrawal-divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-border),
    transparent
  );
  margin-bottom: var(--spacing-md);
}

.hidden {
  display: none !important;
}

/* ============================================================
   Results
   ============================================================ */
.results-section {
  background: var(--gradient-card);
}

.main-result-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.main-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.main-result-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.main-result-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-success);
}

.probability-bar {
  height: 8px;
  background: var(--color-bg-card);
  border-radius: 4px;
  overflow: hidden;
}

.probability-fill {
  height: 100%;
  background: var(--gradient-success);
  border-radius: 4px;
  transition: width 0.5s ease;
}

.results-grid-compact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.result-card-compact {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.result-card-compact.highlight {
  background: var(--gradient-primary);
}

.result-card-compact.highlight .result-label {
  color: rgba(255, 255, 255, 0.7);
}

.result-card-compact.highlight .result-value {
  color: #fff;
}

.result-icon {
  font-size: var(--font-size-xl);
}

.result-content {
  flex: 1;
}

.result-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.result-value {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-success);
}

/* ============================================================
   Phase Breakdown Table
   ============================================================ */
.phase-breakdown {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.phase-breakdown:empty {
  display: none;
}

.phase-breakdown h4 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.breakdown-name {
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.breakdown-prob {
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

/* ============================================================
   Chart Container
   ============================================================ */
.chart-container {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ============================================================
   Utilities
   ============================================================ */
.mobile-only {
  display: none;
}

@media (max-width: 900px) {
  .mobile-only {
    display: flex;
  }
}

@media (max-width: 600px) {
  .header {
    padding: var(--spacing-lg) 0;
  }
  .logo {
    font-size: var(--font-size-xl);
  }
  .tagline {
    font-size: var(--font-size-sm);
  }
}

/* ============================================================
   Tooltips (ⓘ icon + popup)
   ============================================================ */
.tooltip-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 12px;
  line-height: 1;
  cursor: help;
  color: var(--color-text-muted);
  vertical-align: middle;
  margin-left: 4px;
  border-radius: 50%;
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
  user-select: none;
  outline: none;
}

.tooltip-trigger:hover,
.tooltip-trigger:focus {
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
}

.tooltip-trigger::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a2e;
  color: #d0d0e0;
  font-size: 0.75rem;
  font-weight: 400;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  white-space: pre-line;
  width: 280px;
  max-width: 90vw;
  text-align: left;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 1000;
  line-height: 1.5;
}

.tooltip-trigger::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-border);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
  z-index: 1000;
}

.tooltip-trigger:hover::after,
.tooltip-trigger:focus::after,
.tooltip-trigger:hover::before,
.tooltip-trigger:focus::before {
  opacity: 1;
}

@media (max-width: 600px) {
  .tooltip-trigger::after {
    width: 220px;
    font-size: 0.7rem;
    padding: 8px 10px;
  }
}

/* ============================================================
   Collapsible "¿Cómo funciona?" section
   ============================================================ */
.help-section {
  margin-bottom: var(--spacing-xl);
}

.help-section details {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast);
}

.help-section details:hover {
  border-color: var(--color-primary);
}

.help-section summary {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-primary);
  user-select: none;
  list-style: none;
}

.help-section summary::-webkit-details-marker {
  display: none;
}

.help-section summary::after {
  content: "▶";
  font-size: 0.7rem;
  margin-left: auto;
  transition: transform var(--transition-fast);
  color: var(--color-text-muted);
}

.help-section details[open] summary::after {
  transform: rotate(90deg);
}

.help-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.help-content p {
  margin-bottom: var(--spacing-md);
}

.help-content p:last-child {
  margin-bottom: 0;
}

.help-content strong {
  color: var(--color-text);
}

.help-content .highlight-green {
  color: var(--color-success);
  font-weight: 600;
}

.help-content .highlight-purple {
  color: var(--color-primary);
  font-weight: 600;
}

.help-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-md) 0;
}

/* ============================================================
   Bankroll / Risk of Ruin Card
   ============================================================ */
.bankroll-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.bankroll-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.bankroll-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xs);
}

.bankroll-item {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
}

.bankroll-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.3;
}

.bankroll-value {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-text);
}

.bankroll-item.highlight-item {
  grid-column: 1 / -1;
  background: var(--gradient-primary);
}

.bankroll-item.highlight-item .bankroll-label {
  color: rgba(255, 255, 255, 0.7);
}

.bankroll-item.highlight-item .bankroll-value {
  color: #fff;
}

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

/* ============================================================
   Account Config Section (mode toggle)
   ============================================================ */
.account-config-section .section-header .mode-toggle {
  display: flex;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 3px;
  width: auto;
}

.account-config-section .mode-toggle .toggle-option span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}

.account-config-section .mode-toggle .toggle-option input:checked + span {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================================
   Strategy Section
   ============================================================ */
.strategy-section .mode-toggle {
  display: flex;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: 3px;
  width: auto;
}

.strategy-section .mode-toggle .toggle-option span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
}

.strategy-section .mode-toggle .toggle-option input:checked + span {
  background: var(--color-primary);
  color: #fff;
}

.strategy-fields {
  margin-top: var(--spacing-md);
}

/* Pulse animation for calculating state */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.calculating {
  animation: pulse 1s ease infinite;
}

.result-value.negative {
  color: var(--color-danger);
}

.result-card-compact.highlight.negative-bg {
  background: var(--color-danger);
}