/* style.css - Premium Theme for Refund Calculator */

/* --- Design Tokens / Variables --- */
:root {
  /* Premium Glassmorphism Color Palette */
  --bg-primary: #0a0c10;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-input: rgba(255, 255, 255, 0.05);
  --bg-result: rgba(255, 255, 255, 0.02);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --text-title: #ffffff;
  --accent-color: #6366f1;
  --accent-hover: #4f46e5;
  --accent-dark: #3730a3;
  --accent-light: #818cf8;
  --accent-success: #10b981;
  
  /* Fonts */
  --font-main: 'Work Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Shadows & Glassmorphism */
  --shadow-sm: 0 4px 10px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-inset: inset 0 2px 4px rgba(255, 255, 255, 0.05);
  --border-radius-lg: 24px;
  --border-radius-md: 14px;
  --border-radius-sm: 10px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Glass Effects */
  --glass-blur: blur(20px);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
}

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

body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, #090a0f 0%, #030305 100%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  overflow-x: hidden;
  position: relative;
}

/* Ambient glow background with floating colorful blobs */
.glow-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background: radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 85% 80%, rgba(236, 72, 153, 0.12) 0%, transparent 45%);
}

.glow-bg::before,
.glow-bg::after {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.45;
  pointer-events: none;
  animation: float 25s ease-in-out infinite alternate;
}

.glow-bg::before {
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, rgba(139, 92, 246, 0.05) 75%);
  top: 10%;
  left: 10%;
}

.glow-bg::after {
  background: radial-gradient(circle, rgba(236, 72, 153, 0.3) 0%, rgba(217, 70, 239, 0.05) 75%);
  bottom: 10%;
  right: 10%;
  animation-delay: -12.5s;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1);
  }
  100% {
    transform: translate(100px, 60px) scale(1.15);
  }
}

/* --- Layout Container --- */
.app-container {
  width: 100%;
  max-width: 980px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  z-index: 1;
}

/* --- Header --- */
.app-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.logo-img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin-bottom: 0.5rem;
  filter: drop-shadow(0 8px 16px rgba(99, 102, 241, 0.3));
  transition: transform var(--transition-normal);
}

.logo-img:hover {
  transform: rotate(10deg) scale(1.08);
}

.app-header h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.2rem;
  color: var(--text-title);
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.app-header .subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* --- Calculator Card --- */
.calculator-card {
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--border-radius-lg);
  border: var(--glass-border);
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.calculator-card:hover {
  box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15), var(--shadow-lg);
}

.input-section {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.result-section {
  background-color: var(--bg-result);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-title);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* --- Form & Input Elements --- */
#refund-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.input-group label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-title);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: var(--bg-input);
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 1.05rem;
  font-weight: 600;
  outline: none;
  transition: all var(--transition-fast);
}

/* Prefix and Suffix inside inputs */
.input-prefix {
  position: absolute;
  left: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  user-select: none;
}

.input-suffix {
  position: absolute;
  right: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-muted);
  user-select: none;
}

/* Align inputs when prefixes/suffixes are used */
.input-wrapper input:has(+ .input-suffix) {
  padding-right: 3rem;
}
.input-wrapper input {
  /* Default formatting padding fallback */
}
#harga-beli {
  padding-left: 2.2rem;
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
  font-style: italic;
  opacity: 0.5;
}

.input-wrapper input:focus {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-light);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.25);
}

.formatted-display {
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 600;
  margin-top: 0.15rem;
  padding-left: 0.25rem;
  transition: opacity var(--transition-fast);
}

/* Durasi & Meta Grid Layouts */
.duration-grid,
.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.opt-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}

/* --- Rate Header & Badge --- */
.rate-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rate-badge {
  background-color: var(--accent-hover);
  color: var(--bg-primary);
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-display);
}

/* Preset Buttons Container */
.preset-container {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.4rem;
  margin-bottom: 0.2rem;
}

.preset-btn {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-sm);
  padding: 0.5rem 0.2rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.preset-btn strong {
  font-size: 0.9rem;
  font-family: var(--font-display);
}

.preset-btn span {
  font-size: 0.65rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.preset-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

.preset-btn.active {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.preset-btn.active span {
  color: #ffffff;
  opacity: 0.9;
}

/* Slider (Range) Custom Styling */
.slider-wrapper {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.4rem;
}

.slider-min,
.slider-max {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  user-select: none;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.15);
  outline: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--accent-light);
  border: 2px solid #0a0c10;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  background-color: var(--accent-color);
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--accent-light);
  border: 2px solid #0a0c10;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
  background-color: var(--accent-color);
  transform: scale(1.15);
}

/* Calculate Button */
.btn-primary {
  margin-top: 0.5rem;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-color) 100%);
  color: #ffffff;
  border: none;
  border-radius: var(--border-radius-md);
  padding: 0.9rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(99, 102, 241, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  width: 100%;
  margin-top: 1rem;
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-md);
  padding: 0.8rem 1.2rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-secondary:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- Tooltip System --- */
.tooltip {
  position: relative;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%) scale(0.85);
  background-color: var(--text-main);
  color: var(--bg-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  width: 180px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.1);
  box-shadow: var(--shadow-md);
  z-index: 10;
  line-height: 1.3;
}

.tooltip:hover::before {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* --- Results Layout --- */
.result-content {
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.result-box {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.result-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

.refund-amount {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.3rem;
  color: var(--text-title);
  line-height: 1;
  min-height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
}

.refund-amount.has-value {
  color: var(--text-main);
}

/* Chart Canvas Container */
.chart-container {
  position: relative;
  width: 180px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-center-label {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 1.1;
  pointer-events: none;
}

#chart-percent {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--text-title);
}

.chart-center-label .sub {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* Breakdown Box */
.breakdown-box {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius-md);
  padding: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.breakdown-box h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.breakdown-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.breakdown-list li {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.breakdown-list li span:last-child {
  font-weight: 600;
  color: var(--text-main);
}

.breakdown-list li.total-row {
  margin-top: 0.4rem;
  padding-top: 0.5rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  flex-direction: column;
  gap: 0.2rem;
  align-items: center;
}

.breakdown-list li.total-row span:first-child {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.breakdown-list li.total-row .formula-text {
  font-size: 0.75rem;
  font-style: italic;
  font-weight: 500 !important;
  color: var(--text-muted) !important;
  text-align: center;
}

/* --- Footer --- */
.app-footer-bar {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.app-footer-bar a {
  color: var(--accent-hover);
  text-decoration: none;
  font-weight: 700;
  transition: color var(--transition-fast);
}

.app-footer-bar a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.app-footer-bar i {
  color: #c0392b;
  animation: heartbeat 1.5s infinite;
}

/* --- Animations --- */
@keyframes heartbeat {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* --- Responsive Layouts --- */
@media (max-width: 780px) {
  .calculator-card {
    grid-template-columns: 1fr;
  }
  
  .result-section {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 1rem 0.5rem;
  }
  
  .app-header h1 {
    font-size: 1.8rem;
  }
  
  .input-section {
    padding: 1.5rem 1.25rem;
  }
  
  .duration-grid,
  .meta-grid {
    grid-template-columns: 1fr;
  }
  
  .preset-container {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .preset-btn:nth-child(4),
  .preset-btn:nth-child(5) {
    grid-column: span 1;
  }
}