/* ============================================
   CALCULATOR SUITE CORE - Universal Styles
   Author: Sharath Babu
   ============================================ */

:root {
  /* Primary Colors */
  --calc-primary: #6C63FF;
  --calc-primary-dark: #5A52D5;
  --calc-primary-light: #8B85FF;
  --calc-secondary: #FF6584;
  --calc-secondary-dark: #E5506F;
  --calc-accent: #43E97B;
  --calc-accent-dark: #38D16A;

  /* Background Colors */
  --calc-bg: #F8F9FF;
  --calc-card-bg: #FFFFFF;
  --calc-input-bg: #F3F4FF;
  --calc-border: #E8E9FF;

  /* Text Colors */
  --calc-text-primary: #1A1A2E;
  --calc-text-secondary: #6B7280;
  --calc-text-light: #9CA3AF;
  --calc-text-white: #FFFFFF;

  /* Gradients */
  --calc-gradient-primary: linear-gradient(135deg, #6C63FF 0%, #FF6584 100%);
  --calc-gradient-secondary: linear-gradient(135deg, #43E97B 0%, #38F9D7 100%);
  --calc-gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
  --calc-gradient-card: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --calc-gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --calc-gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --calc-gradient-green: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);

  /* Shadows */
  --calc-shadow-sm: 0 2px 8px rgba(108, 99, 255, 0.1);
  --calc-shadow-md: 0 4px 20px rgba(108, 99, 255, 0.15);
  --calc-shadow-lg: 0 8px 40px rgba(108, 99, 255, 0.2);
  --calc-shadow-xl: 0 20px 60px rgba(108, 99, 255, 0.25);

  /* Border Radius */
  --calc-radius-sm: 8px;
  --calc-radius-md: 12px;
  --calc-radius-lg: 20px;
  --calc-radius-xl: 28px;
  --calc-radius-full: 9999px;

  /* Spacing */
  --calc-space-xs: 4px;
  --calc-space-sm: 8px;
  --calc-space-md: 16px;
  --calc-space-lg: 24px;
  --calc-space-xl: 32px;
  --calc-space-2xl: 48px;

  /* Typography */
  --calc-font: 'Poppins', sans-serif;
  --calc-font-xs: 0.75rem;
  --calc-font-sm: 0.875rem;
  --calc-font-md: 1rem;
  --calc-font-lg: 1.125rem;
  --calc-font-xl: 1.25rem;
  --calc-font-2xl: 1.5rem;
  --calc-font-3xl: 2rem;

  /* Transitions */
  --calc-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --calc-transition-fast: all 0.15s ease;
  --calc-transition-slow: all 0.5s ease;
}

/* ============================================
   BASE WRAPPER
   ============================================ */
.calc-suite-wrapper {
  font-family: var(--calc-font);
  background: var(--calc-bg);
  border-radius: var(--calc-radius-xl);
  padding: var(--calc-space-xl);
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  box-shadow: var(--calc-shadow-lg);
}

/* ============================================
   HEADER
   ============================================ */
.calc-header {
  background: var(--calc-gradient-primary);
  border-radius: var(--calc-radius-lg);
  padding: var(--calc-space-xl) var(--calc-space-2xl);
  text-align: center;
  margin-bottom: var(--calc-space-xl);
  position: relative;
  overflow: hidden;
}

.calc-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: calcPulse 4s ease-in-out infinite;
}

.calc-header h2 {
  font-size: var(--calc-font-2xl);
  font-weight: 700;
  color: var(--calc-text-white);
  margin: 0 0 var(--calc-space-xs) 0;
  position: relative;
}

.calc-header p {
  font-size: var(--calc-font-sm);
  color: rgba(255,255,255,0.8);
  margin: 0;
  position: relative;
}

/* ============================================
   TABS
   ============================================ */
.calc-tabs {
  display: flex;
  background: var(--calc-card-bg);
  border-radius: var(--calc-radius-full);
  padding: 4px;
  margin-bottom: var(--calc-space-xl);
  box-shadow: var(--calc-shadow-sm);
  overflow-x: auto;
  gap: 4px;
}

.calc-tab-btn {
  flex: 1;
  min-width: 100px;
  padding: 10px var(--calc-space-md);
  border: none;
  background: transparent;
  border-radius: var(--calc-radius-full);
  font-family: var(--calc-font);
  font-size: var(--calc-font-sm);
  font-weight: 500;
  color: var(--calc-text-secondary);
  cursor: pointer;
  transition: var(--calc-transition);
  white-space: nowrap;
}

.calc-tab-btn.active {
  background: var(--calc-gradient-primary);
  color: var(--calc-text-white);
  box-shadow: var(--calc-shadow-md);
}

.calc-tab-btn:hover:not(.active) {
  background: var(--calc-input-bg);
  color: var(--calc-primary);
}

/* ============================================
   CARDS
   ============================================ */
.calc-card {
  background: var(--calc-card-bg);
  border-radius: var(--calc-radius-lg);
  padding: var(--calc-space-xl);
  box-shadow: var(--calc-shadow-sm);
  border: 1px solid var(--calc-border);
  transition: var(--calc-transition);
}

.calc-card:hover {
  box-shadow: var(--calc-shadow-md);
  transform: translateY(-2px);
}

.calc-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--calc-space-md);
  margin-bottom: var(--calc-space-xl);
}

.calc-result-card {
  background: var(--calc-card-bg);
  border-radius: var(--calc-radius-lg);
  padding: var(--calc-space-lg);
  box-shadow: var(--calc-shadow-sm);
  border: 1px solid var(--calc-border);
  text-align: center;
}

.calc-result-card .calc-result-label {
  font-size: var(--calc-font-xs);
  font-weight: 600;
  color: var(--calc-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--calc-space-xs);
}

.calc-result-card .calc-result-value {
  font-size: var(--calc-font-2xl);
  font-weight: 700;
  color: var(--calc-text-primary);
}

.calc-hero-card {
  background: var(--calc-gradient-primary);
  border-radius: var(--calc-radius-lg);
  padding: var(--calc-space-2xl);
  text-align: center;
  margin-bottom: var(--calc-space-xl);
  color: var(--calc-text-white);
}

.calc-hero-card .calc-hero-label {
  font-size: var(--calc-font-sm);
  opacity: 0.8;
  margin-bottom: var(--calc-space-xs);
}

.calc-hero-card .calc-hero-value {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.calc-form-group {
  margin-bottom: var(--calc-space-lg);
}

.calc-label {
  display: block;
  font-size: var(--calc-font-sm);
  font-weight: 600;
  color: var(--calc-text-primary);
  margin-bottom: var(--calc-space-sm);
}

.calc-input {
  width: 100%;
  padding: 12px var(--calc-space-md);
  border: 2px solid var(--calc-border);
  border-radius: var(--calc-radius-md);
  font-family: var(--calc-font);
  font-size: var(--calc-font-md);
  color: var(--calc-text-primary);
  background: var(--calc-input-bg);
  transition: var(--calc-transition);
  box-sizing: border-box;
}

.calc-input:focus {
  outline: none;
  border-color: var(--calc-primary);
  box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
  background: var(--calc-card-bg);
}

.calc-select {
  width: 100%;
  padding: 12px var(--calc-space-md);
  border: 2px solid var(--calc-border);
  border-radius: var(--calc-radius-md);
  font-family: var(--calc-font);
  font-size: var(--calc-font-md);
  color: var(--calc-text-primary);
  background: var(--calc-input-bg);
  cursor: pointer;
  transition: var(--calc-transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C63FF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  box-sizing: border-box;
}

.calc-select:focus {
  outline: none;
  border-color: var(--calc-primary);
  box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.1);
}

/* ============================================
   SLIDER
   ============================================ */
.calc-slider-wrapper {
  position: relative;
  margin: var(--calc-space-sm) 0;
}

.calc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--calc-radius-full);
  background: linear-gradient(to right, var(--calc-primary) 0%, var(--calc-primary) 50%, var(--calc-border) 50%, var(--calc-border) 100%);
  outline: none;
  cursor: pointer;
  transition: var(--calc-transition);
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--calc-card-bg);
  border: 3px solid var(--calc-primary);
  cursor: pointer;
  box-shadow: var(--calc-shadow-md);
  transition: var(--calc-transition);
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: var(--calc-shadow-lg);
}

.calc-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--calc-card-bg);
  border: 3px solid var(--calc-primary);
  cursor: pointer;
  box-shadow: var(--calc-shadow-md);
}

.calc-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--calc-font-xs);
  color: var(--calc-text-light);
  margin-top: var(--calc-space-xs);
}

.calc-slider-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--calc-space-xs);
  gap: var(--calc-space-md);
}

.calc-slider-value {
  font-size: var(--calc-font-lg);
  font-weight: 700;
  color: var(--calc-primary);
  min-width: 120px;
  text-align: right;
}

/* ============================================
   BUTTONS
   ============================================ */
.calc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--calc-space-sm);
  padding: 14px var(--calc-space-xl);
  border: none;
  border-radius: var(--calc-radius-full);
  font-family: var(--calc-font);
  font-size: var(--calc-font-md);
  font-weight: 600;
  cursor: pointer;
  transition: var(--calc-transition);
  text-decoration: none;
}

.calc-btn-primary {
  background: var(--calc-gradient-primary);
  color: var(--calc-text-white);
  box-shadow: var(--calc-shadow-md);
  width: 100%;
}

.calc-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--calc-shadow-lg);
}

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

.calc-btn-secondary {
  background: var(--calc-input-bg);
  color: var(--calc-primary);
  border: 2px solid var(--calc-border);
}

.calc-btn-secondary:hover {
  background: var(--calc-primary);
  color: var(--calc-text-white);
  border-color: var(--calc-primary);
}

.calc-btn-group {
  display: flex;
  gap: var(--calc-space-sm);
  flex-wrap: wrap;
}

.calc-toggle-btn {
  flex: 1;
  padding: 10px var(--calc-space-md);
  border: 2px solid var(--calc-border);
  border-radius: var(--calc-radius-full);
  font-family: var(--calc-font);
  font-size: var(--calc-font-sm);
  font-weight: 500;
  color: var(--calc-text-secondary);
  background: var(--calc-card-bg);
  cursor: pointer;
  transition: var(--calc-transition);
  text-align: center;
}

.calc-toggle-btn.active {
  background: var(--calc-gradient-primary);
  color: var(--calc-text-white);
  border-color: transparent;
  box-shadow: var(--calc-shadow-sm);
}

/* ============================================
   TABLE
   ============================================ */
.calc-table-wrapper {
  overflow-x: auto;
  border-radius: var(--calc-radius-lg);
  box-shadow: var(--calc-shadow-sm);
  margin-top: var(--calc-space-lg);
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--calc-font-sm);
  background: var(--calc-card-bg);
}

.calc-table thead tr {
  background: var(--calc-gradient-primary);
  color: var(--calc-text-white);
}

.calc-table thead th {
  padding: 14px var(--calc-space-md);
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.calc-table tbody tr {
  border-bottom: 1px solid var(--calc-border);
  transition: var(--calc-transition-fast);
}

.calc-table tbody tr:hover {
  background: var(--calc-input-bg);
}

.calc-table tbody td {
  padding: 12px var(--calc-space-md);
  color: var(--calc-text-primary);
}

.calc-table tbody tr:last-child {
  border-bottom: none;
}

/* ============================================
   LAYOUT GRIDS
   ============================================ */
.calc-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--calc-space-xl);
  align-items: start;
}

.calc-three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--calc-space-md);
}

.calc-four-col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--calc-space-md);
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.calc-progress-wrapper {
  margin: var(--calc-space-md) 0;
}

.calc-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--calc-font-xs);
  color: var(--calc-text-secondary);
  margin-bottom: var(--calc-space-xs);
}

.calc-progress-bar {
  height: 8px;
  background: var(--calc-border);
  border-radius: var(--calc-radius-full);
  overflow: hidden;
}

.calc-progress-fill {
  height: 100%;
  border-radius: var(--calc-radius-full);
  background: var(--calc-gradient-primary);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BADGE / TAG
   ============================================ */
.calc-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--calc-radius-full);
  font-size: var(--calc-font-xs);
  font-weight: 600;
  background: var(--calc-input-bg);
  color: var(--calc-primary);
  border: 1px solid var(--calc-border);
}

.calc-badge-success {
  background: rgba(67, 233, 123, 0.1);
  color: #22c55e;
  border-color: rgba(67, 233, 123, 0.3);
}

.calc-badge-warning {
  background: rgba(251, 191, 36, 0.1);
  color: #f59e0b;
  border-color: rgba(251, 191, 36, 0.3);
}

.calc-badge-danger {
  background: rgba(255, 101, 132, 0.1);
  color: var(--calc-secondary);
  border-color: rgba(255, 101, 132, 0.3);
}

/* ============================================
   DIVIDER
   ============================================ */
.calc-divider {
  height: 1px;
  background: var(--calc-border);
  margin: var(--calc-space-xl) 0;
}

/* ============================================
   INFO BOX
   ============================================ */
.calc-info-box {
  background: rgba(108, 99, 255, 0.05);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: var(--calc-radius-md);
  padding: var(--calc-space-md);
  font-size: var(--calc-font-sm);
  color: var(--calc-text-secondary);
  margin: var(--calc-space-md) 0;
}

.calc-info-box strong {
  color: var(--calc-primary);
}

/* ============================================
   SECTION TITLE
   ============================================ */
.calc-section-title {
  font-size: var(--calc-font-lg);
  font-weight: 700;
  color: var(--calc-text-primary);
  margin: 0 0 var(--calc-space-md) 0;
  display: flex;
  align-items: center;
  gap: var(--calc-space-sm);
}

.calc-section-title::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--calc-gradient-primary);
  border-radius: var(--calc-radius-full);
  opacity: 0.3;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes calcPulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

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

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

@keyframes calcBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.calc-animate-in {
  animation: calcFadeIn 0.4s ease forwards;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .calc-suite-wrapper {
    padding: var(--calc-space-md);
    border-radius: var(--calc-radius-lg);
  }

  .calc-two-col {
    grid-template-columns: 1fr;
  }

  .calc-three-col {
    grid-template-columns: repeat(2, 1fr);
  }

  .calc-four-col {
    grid-template-columns: repeat(2, 1fr);
  }

  .calc-header {
    padding: var(--calc-space-lg);
  }

  .calc-header h2 {
    font-size: var(--calc-font-xl);
  }

  .calc-hero-card .calc-hero-value {
    font-size: var(--calc-font-2xl);
  }

  .calc-tab-btn {
    min-width: 80px;
    padding: 8px 12px;
    font-size: var(--calc-font-xs);
  }
}

@media (max-width: 480px) {
  .calc-three-col,
  .calc-four-col {
    grid-template-columns: 1fr;
  }

  .calc-card-grid {
    grid-template-columns: 1fr;
  }

  .calc-btn-group {
    flex-direction: column;
  }

  .calc-toggle-btn {
    flex: none;
    width: 100%;
  }
}