@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --bg: #f1f5f9;
  --surface: rgba(255, 255, 255, 0.95);
  --surface-hover: rgba(255, 255, 255, 1);
  --text: #0f172a;
  --muted: #475569;
  --border: #cbd5e1;
  --border-focus: #06b6d4;
  --accent: linear-gradient(135deg, #06b6d4, #0891b2);
  --accent-hover: linear-gradient(135deg, #0891b2, #0e7490);
  --accent-solid: #06b6d4;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --success-border: rgba(16, 185, 129, 0.2);
  --error: #dc2626;
  --error-bg: rgba(220, 38, 38, 0.1);
  --error-border: rgba(220, 38, 38, 0.2);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --warning-border: rgba(245, 158, 11, 0.2);
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 4px 12px -2px rgba(15, 23, 42, 0.08);
  --backdrop: blur(16px);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-title: 'Outfit', 'Inter', sans-serif;
  --input-bg: #f8fafc;
  --input-bg-focus: #ffffff;
  --title-gradient: linear-gradient(135deg, #0f172a 30%, #475569 100%);
}

body.dark-mode {
  --bg: #0b0f19;
  --surface: rgba(30, 41, 59, 0.75);
  --surface-hover: rgba(30, 41, 59, 0.95);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --border: #334155;
  --border-focus: #06b6d4;
  --accent: linear-gradient(135deg, #06b6d4, #38bdf8);
  --accent-hover: linear-gradient(135deg, #0891b2, #0ea5e9);
  --accent-solid: #06b6d4;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --success-border: rgba(16, 185, 129, 0.3);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.15);
  --error-border: rgba(239, 68, 68, 0.3);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --warning-border: rgba(245, 158, 11, 0.3);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --backdrop: blur(12px);
  --input-bg: #1e293b;
  --input-bg-focus: #1e293b;
  --title-gradient: linear-gradient(135deg, #f8fafc 30%, #cbd5e1 100%);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  background-image: 
    radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(8, 145, 178, 0.08) 0px, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
  background-image: 
    radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(56, 189, 248, 0.12) 0px, transparent 50%);
}

/* Top Bar & Toggles */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1rem;
}

.shop-selector {
  display: flex;
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 3px;
  backdrop-filter: var(--backdrop);
  -webkit-backdrop-filter: var(--backdrop);
  transition: all 0.3s ease;
}

body.dark-mode .shop-selector {
  background: rgba(255, 255, 255, 0.03);
}

.shop-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 0.5rem 1.25rem;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

.shop-btn:hover {
  color: var(--text);
}

.shop-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

body.dark-mode .shop-btn.active {
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
  outline: none;
  padding: 0;
}

.theme-toggle:hover {
  border-color: var(--border-focus);
  transform: rotate(15deg) scale(1.05);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.5s ease;
}

.theme-toggle .sun-icon {
  display: block;
  stroke: #eab308;
}

.theme-toggle .moon-icon {
  display: none;
  stroke: #a855f7;
}

body.dark-mode .theme-toggle .sun-icon {
  display: none;
}

body.dark-mode .theme-toggle .moon-icon {
  display: block;
}

.container {
  max-width: 520px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeIn 0.8s ease-out;
}

header h1 {
  font-family: var(--font-title);
  margin: 0 0 0.35rem;
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--title-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

header .shop-name {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 500;
}

header .datetime {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.card {
  background: var(--surface);
  backdrop-filter: var(--backdrop);
  -webkit-backdrop-filter: var(--backdrop);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(15, 23, 42, 0.12), 0 8px 8px -5px rgba(15, 23, 42, 0.04);
}

body.dark-mode .card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.card h2 {
  font-family: var(--font-title);
  margin: 0 0 1.2rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-left: 3px solid var(--accent-solid);
  padding-left: 0.6rem;
}

.field {
  margin-bottom: 1rem;
}

.field:last-child {
  margin-bottom: 0;
}

label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
}

input[type='text'],
input[type='password'],
input[type='number'],
input[type='email'],
select,
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: var(--input-bg);
  color: var(--text);
  transition: all 0.25s ease;
}

input[type='text']:focus,
input[type='password']:focus,
input[type='number']:focus,
input[type='email']:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
  background: var(--input-bg-focus);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

input[type='number'] {
  text-align: right;
  max-width: 5.5rem;
  font-variant-numeric: tabular-nums;
  -moz-appearance: textfield;
}

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

textarea {
  min-height: 4.5rem;
  resize: vertical;
}

.row {
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.2s ease;
}

.row:hover {
  background-color: rgba(99, 102, 241, 0.02);
}

.row:last-child {
  border-bottom: none;
}

.row .label {
  font-weight: 700;
  font-size: 1.05rem;
  background: var(--accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.row .subtotal {
  min-width: 6.5rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 600;
}

.totals {
  display: grid;
  gap: 0.5rem;
}

.totals .line {
  display: flex;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
  color: var(--muted);
}

.totals .grand {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 2px solid var(--border);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
}

.btn {
  display: block;
  width: 100%;
  padding: 0.9rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.2);
  text-align: center;
}

.btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
  margin-top: 0.6rem;
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-focus);
  box-shadow: none;
}

.message {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-weight: 500;
  display: none;
  animation: slideDown 0.3s ease-out;
}

.message.show {
  display: block;
}

.message.success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.message.error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error-border);
}

.message.info {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.footer-link {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  animation: fadeIn 1s ease-out;
}

.footer-link a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link a:hover {
  color: var(--accent-solid);
}

/* Admin Specific navigation */
.admin-nav {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.admin-nav button {
  flex: 1;
  min-width: 6.5rem;
  padding: 0.6rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.admin-nav button:hover {
  border-color: var(--border-focus);
  color: var(--text);
}

.admin-nav button.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(139, 92, 246, 0.25);
}

.panel {
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.panel.active {
  display: block;
}

.info-box {
  padding: 0.85rem 1rem;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: #c7d2fe;
  margin-bottom: 1rem;
}

.deposit-alert {
  margin-bottom: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning);
  font-weight: 700;
  font-size: 0.975rem;
  line-height: 1.45;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.1);
  animation: pulseGlow 2s infinite ease-in-out;
}

.deposit-meta {
  margin: 0.5rem 0 1.25rem;
  font-size: 0.875rem;
  color: var(--muted);
}

#refresh-deposit-btn {
  margin-top: 0;
  margin-bottom: 0.6rem;
}

.deposit-card {
  text-align: center;
  border-color: rgba(99, 102, 241, 0.3);
}

.deposit-hint {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 500;
}

.deposit-amount {
  font-size: 2.35rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #10b981, #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.deposit-shift {
  margin: 0.6rem 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.hidden {
  display: none !important;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulseGlow {
  0% {
    border-color: rgba(245, 158, 11, 0.3);
  }
  50% {
    border-color: rgba(245, 158, 11, 0.6);
  }
  100% {
    border-color: rgba(245, 158, 11, 0.3);
  }
}