/* ==========================================================================
   Denis Kebap Buchhaltung — Modern Next-Gen Design System
   Entworfen für Schnelligkeit, Eleganz und mobile Touch-Bedienung (iOS & Desktop)
   ========================================================================== */

:root {
  --bg-main: #0b0f17;
  --bg-card: #151d2c;
  --bg-card-hover: #1c2638;
  --bg-input: #0f1624;
  --border: #243046;
  --border-focus: #3b82f6;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --accent-gold: #f59e0b;
  --accent-gold-bg: rgba(245, 158, 11, 0.12);
  --accent-green: #10b981;
  --accent-green-bg: rgba(16, 185, 129, 0.12);
  --accent-red: #ef4444;
  --accent-red-bg: rgba(239, 68, 68, 0.12);
  --accent-blue: #3b82f6;
  --accent-blue-bg: rgba(59, 130, 246, 0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding-bottom: 80px; /* Space for bottom nav */
}

/* Header */
.top-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.brand-text h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

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

.cache-pill {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-full);
  background: var(--accent-green-bg);
  color: var(--accent-green);
  font-size: 0.75rem;
  font-weight: 600;
}

.cache-pill .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

/* Nav Pill Button */
.btn-icon {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* Bottom Navigation Bar for Mobile */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 60;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0.25rem env(safe-area-inset-bottom, 0.5rem);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  background: transparent;
  border: none;
  color: var(--text-subtle);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  min-width: 60px;
}

.nav-item svg, .nav-item span.icon {
  font-size: 1.25rem;
  line-height: 1;
}

.nav-item.active {
  color: var(--accent-gold);
}

.nav-item:active {
  transform: scale(0.92);
}

/* Main Content Views */
.main-view {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* KPI Cards Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.85rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

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

.kpi-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kpi-value {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.kpi-sub {
  font-size: 0.75rem;
  color: var(--text-subtle);
}

.kpi-value.green { color: var(--accent-green); }
.kpi-value.amber { color: var(--accent-gold); }
.kpi-value.blue { color: var(--accent-blue); }

/* Quick Action Tiles */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.section-header h2 {
  font-size: 1.15rem;
  font-weight: 700;
}

.tiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.action-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.action-tile:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.action-tile:active {
  transform: scale(0.96);
}

.tile-icon {
  font-size: 1.5rem;
  background: var(--bg-input);
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.tile-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.tile-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Filter Chips Bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  -webkit-overflow-scrolling: touch;
}

.filter-bar::-webkit-scrollbar {
  display: none;
}

.chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.45rem 0.95rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.chip:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
}

.chip.active {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

/* Search Box */
.search-box {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease;
}

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

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
  pointer-events: none;
}

/* List Items (Invoices, Payments, Articles) */
.data-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.data-row {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.15s ease;
}

.data-row:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.data-row:active {
  transform: scale(0.98);
}

.data-main {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.data-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.data-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.data-side {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
}

.data-amount {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Badges */
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.badge-paid { background: var(--accent-green-bg); color: var(--accent-green); }
.badge-open { background: var(--accent-red-bg); color: var(--accent-red); }
.badge-pending { background: var(--accent-gold-bg); color: var(--accent-gold); }

/* Modal Bottom Sheet */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-sheet {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  padding: 1.5rem;
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.open .modal-sheet {
  transform: translateY(0);
}

.sheet-handle {
  width: 44px;
  height: 5px;
  background: var(--border);
  border-radius: 99px;
  margin: -0.5rem auto 1.25rem auto;
}

/* Interactive Cash Counting Calculator */
.cash-count-table {
  width: 100%;
  border-collapse: collapse;
}

.cash-count-table th, .cash-count-table td {
  padding: 0.5rem 0.4rem;
  border-bottom: 1px solid var(--border);
  text-align: right;
  font-size: 0.9rem;
}

.cash-count-table th:first-child, .cash-count-table td:first-child {
  text-align: left;
  font-weight: 600;
}

.cash-input {
  width: 70px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-sm);
  text-align: right;
  font-size: 0.95rem;
  outline: none;
}

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

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #000;
  font-weight: 700;
  padding: 0.8rem 1.4rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
  transition: all 0.15s ease;
  width: 100%;
}

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

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  font-weight: 600;
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  width: 100%;
}

/* Stempeluhr Widget */
.clock-card {
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.live-timer {
  font-size: 2.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  color: var(--accent-gold);
}

.clock-actions {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  max-width: 360px;
}