/* ==========================================================================
   Urlaubsrechner - Apple Style Monochrome (Schwarz-Weiß Minimalismus)
   ========================================================================== */

:root {
  /* Apple Monochrome Dark (Default) */
  --bg-app: #000000;
  --bg-card: rgba(28, 28, 30, 0.75);
  --bg-card-solid: #1c1c1e;
  --bg-input: rgba(44, 44, 46, 0.6);
  --border-subtle: rgba(255, 255, 255, 0.12);
  --border-focus: #ffffff;
  
  --text-primary: #ffffff;
  --text-secondary: #8e8e93;
  --text-tertiary: #636366;
  
  --hero-bg-primary: #ffffff;
  --hero-text-primary: #000000;
  --hero-sub-primary: rgba(0, 0, 0, 0.65);
  
  --hero-bg-secondary: #2c2c2e;
  --hero-text-secondary: #ffffff;
  
  --badge-bg: rgba(255, 255, 255, 0.1);
  --badge-text: #ffffff;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 22px;
  
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", sans-serif;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  --bg-app: #f2f2f7;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-solid: #ffffff;
  --bg-input: #e5e5ea;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-focus: #000000;
  
  --text-primary: #000000;
  --text-secondary: #6c6c70;
  --text-tertiary: #aeaeb2;
  
  --hero-bg-primary: #000000;
  --hero-text-primary: #ffffff;
  --hero-sub-primary: rgba(255, 255, 255, 0.7);
  
  --hero-bg-secondary: #e5e5ea;
  --hero-text-secondary: #000000;
  
  --badge-bg: rgba(0, 0, 0, 0.06);
  --badge-text: #000000;
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
  width: 100%;
  max-width: 1040px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.25rem 0.5rem;
}

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

.brand h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

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

/* Apple Buttons */
.apple-btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card-solid);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: var(--transition);
}

.apple-btn:hover {
  background: var(--text-primary);
  color: var(--bg-app);
  border-color: var(--text-primary);
}

.icon-button {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.icon-button:hover {
  background: var(--text-primary);
  color: var(--bg-app);
}

.icon-button svg {
  width: 18px;
  height: 18px;
}

[data-theme="light"] .sun-icon,
:not([data-theme="light"]) .moon-icon {
  display: none;
}

/* Grid Layout */
.calculator-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 860px) {
  .calculator-grid {
    grid-template-columns: 1fr;
  }
}

/* Apple Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.section-block {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.1rem;
}

.section-block:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.section-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* Forms */
.form-row.two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.form-row.three-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.65rem;
}

.margin-top-sm {
  margin-top: 0.25rem;
}

.margin-top-md {
  margin-top: 0.75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.label-hint {
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

/* Apple Inputs */
.apple-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
  transition: var(--transition);
}

.apple-input:focus {
  border-color: var(--border-focus);
  background: var(--bg-card-solid);
}

/* Number Step Wrapper */
.number-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}

.number-input-wrapper:focus-within {
  border-color: var(--border-focus);
}

.btn-step {
  background: transparent;
  border: none;
  color: var(--text-primary);
  width: 36px;
  height: 38px;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease;
  user-select: none;
}

.btn-step:hover {
  background: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] .btn-step:hover {
  background: rgba(0, 0, 0, 0.08);
}

.number-input-wrapper input[type="number"] {
  width: 100%;
  text-align: center;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  outline: none;
  -moz-appearance: textfield;
}

.number-input-wrapper input[type="number"]::-webkit-outer-spin-button,
.number-input-wrapper input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Currency & Unit Wrappers */
.currency-input-wrapper,
.unit-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.currency-symbol {
  position: absolute;
  left: 0.8rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  pointer-events: none;
}

.currency-input-wrapper input {
  padding-left: 2rem !important;
}

.unit-symbol {
  position: absolute;
  right: 0.8rem;
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-secondary);
  pointer-events: none;
}

.unit-input-wrapper input {
  padding-right: 2.4rem !important;
}

.currency-input-wrapper input,
.unit-input-wrapper input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
  transition: var(--transition);
}

.currency-input-wrapper input:focus,
.unit-input-wrapper input:focus {
  border-color: var(--border-focus);
  background: var(--bg-card-solid);
}

/* Results Section */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.live-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--border-subtle);
}

/* Hero Boxes (Apple Monochrom) */
.hero-box {
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transition: var(--transition);
}

.hero-box.primary {
  background: var(--hero-bg-primary);
  color: var(--hero-text-primary);
}

.hero-box.primary .hero-subtitle {
  color: var(--hero-sub-primary);
}

.hero-box.secondary {
  background: var(--hero-bg-secondary);
  color: var(--hero-text-secondary);
  border: 1px solid var(--border-subtle);
}

.hero-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.hero-amount {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.hero-subline {
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.2rem;
  opacity: 0.9;
}

/* Details Section */
.detail-section {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.detail-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.85rem;
}

.detail-info {
  display: flex;
  flex-direction: column;
}

.detail-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.detail-sub {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.detail-val-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.detail-total {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.detail-pp {
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.sub-row {
  display: flex;
  justify-content: space-between;
  padding: 0.2rem 0.85rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.sub-row strong {
  color: var(--text-primary);
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}