/* ============================================================
   WhaleStack - Shared Calculator Design System
   Included by all calc tools for 1:1 visual consistency
   ============================================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

/* Design Tokens */
:root {
  --bg-color:         #0d1117;
  --panel-bg:         rgba(22, 27, 34, 0.7);
  --border-color:     rgba(48, 54, 61, 0.8);
  --text-primary:     #f0f6fc;
  --text-secondary:   #8b949e;
  --accent-color:     #58a6ff;
  --accent-hover:     #3182ce;
  --accent-glow:      rgba(88, 166, 255, 0.3);
  --row-green:        rgba(46, 160, 67, 0.15);
  --row-green-border: rgba(46, 160, 67, 0.4);
  --row-red:          rgba(248, 81, 73, 0.15);
  --row-red-border:   rgba(248, 81, 73, 0.4);
  --success:          #2ea043;
  --danger:           #f85149;
  --warn:             #ff9800;
  --transition:       all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --container-max:    780px;
}

body.light-mode {
  --bg-color:       #f0f2f5;
  --panel-bg:       rgba(255, 255, 255, 0.85);
  --border-color:   rgba(209, 213, 219, 0.8);
  --text-primary:   #1f2937;
  --text-secondary: #6b7280;
  --accent-color:   #2563eb;
  --accent-hover:   #1d4ed8;
  --accent-glow:    rgba(37, 99, 235, 0.2);
}

/* Body Layout */
body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at top right, rgba(88,166,255,0.05), transparent 40%);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 20px 20px 36px;
  margin: 0;
  overflow-y: auto;
  transition: var(--transition);
}

/* Container Card */
.container {
  max-width: var(--container-max);
  width: 100%;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 28px 32px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  animation: fadeInUp 0.5s ease;
}

body.light-mode .container {
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* Page Title */
h1 {
  font-size: 1.65rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-top: -1rem;
  margin-bottom: 1.5rem;
}

/* Form Grid */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem;
  margin-bottom: 1.5rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}

/* Labels */
label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.muted {
  font-size: 0.75rem;
  opacity: 0.65;
}

/* Inputs and Selects */
input,
select {
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  padding: 0.8rem 1rem;
  border-radius: 10px;
  font-size: 0.95rem;
  font-family: "Inter", sans-serif;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
  width: 100%;
  min-width: 0;
}

body.light-mode input,
body.light-mode select {
  background: #ffffff;
  border-color: #d1d5db;
}

input:focus,
select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

select { cursor: pointer; }

/* Button Row */
.buttons {
  display: flex;
  gap: 0.85rem;
  margin-top: 0.85rem;
}

/* Base Button */
button {
  flex: 1;
  padding: 0.8rem 1rem;
  border-radius: 11px;
  font-weight: 700;
  font-size: 0.95rem;
  font-family: "Inter", sans-serif;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
}

/* Primary - Calculate */
.calc-btn {
  background: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.calc-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-glow);
}

/* Secondary - Clear */
.clear-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  box-shadow: none;
}

.clear-btn:hover {
  background: rgba(248,81,73,0.1);
  color: var(--danger);
  border-color: var(--danger);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--accent-color);
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Message Boxes */
.error-message,
.error-box {
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  display: none;
  animation: fadeIn 0.3s ease;
  background: rgba(248,81,73,0.1);
  color: var(--danger);
  border: 1px solid rgba(248,81,73,0.25);
}

.success-message {
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  display: none;
  animation: fadeIn 0.3s ease;
  background: rgba(46,160,67,0.1);
  color: var(--success);
  border: 1px solid rgba(46,160,67,0.2);
}

.info-box {
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  display: none;
  animation: fadeIn 0.3s ease;
  background: rgba(88,166,255,0.1);
  color: var(--accent-color);
  border: 1px solid rgba(88,166,255,0.25);
}

/* Result Panels */
.result {
  margin-top: 1.5rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.25rem;
  animation: fadeIn 0.4s ease;
}

body.light-mode .result {
  background: #ffffff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

body.light-mode .result-row {
  border-bottom-color: rgba(0,0,0,0.05);
}

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

.result-label {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.result-value {
  font-weight: 700;
  color: var(--text-primary);
}

.ok, .profit { color: var(--success); }
.err, .loss  { color: var(--danger);  }
.neutral     { color: var(--warn);    }

.warning {
  color: var(--warn);
  font-size: 0.83rem;
  margin-top: 0.75rem;
  text-align: center;
  font-style: italic;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Responsive */
@media (max-width: 480px) {
  .container { padding: 18px 14px; }
  h1 { font-size: 1.3rem; }
  .buttons { flex-direction: column; }
}