:root {
  /* Color Palette */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #10b981;
  --background-color: #f1f5f9;
  --surface-color: #ffffff;
  --surface-variant: #f8fafc;
  --text-light: #ffffff;
  --border-color: #e2e8f0;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --error-color: #ef4444;
  --success-color: #22c55e;
  --footer-bg: #ffffff;

  /* Form Input Styles */
  --input-padding: 0.75rem;
  --border-radius: 0.375rem;

  /* Shadows */
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Currency Input Styling */
.currency-input {
  appearance: textfield;
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
}

.currency-input::-webkit-outer-spin-button,
.currency-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}

.input-addon-left {
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  border-right: none;
  padding: var(--input-padding);
  background: var(--surface-variant);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

#errorMessage {
  margin-top: 0.625rem;
  text-align: center;
  display: none;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  background-color: var(--error-color);
  color: var(--text-light);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Preloaded font family with swap */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  src: url(/static/inter-400.e89d1ff37e.woff2) format("woff2");
  font-display: swap; /* ensures text is visible while font loads */
}

body {
  font-family: "Inter", sans-serif;
  background: var(--background-color);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Welcome Section */
.welcome-section {
  text-align: center;
  padding: 2rem 1rem;
  max-width: 100%;
  margin: 0 auto;
}

.welcome-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.ads-container-horizontal {
  display: block;
  width: 100%;
  height: 280px;
  padding: 1rem 0 !important;
  background: #f3f4f6;
}

/* Calculator Cards Grid */
.calculators-grid {
  padding: 1rem;
}

.calculator-category {
  margin-bottom: 3rem;
}

.calculator-category h3 {
  color: var(--text-primary);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-left: 1rem;
  border-left: 4px solid var(--primary-color);
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(20%, 1fr));
  gap: 1.5rem;
}

.grid-container .calculator-card {
  min-width: 50%;
  max-width: 280px;
}

.calculator-card {
  background: var(--surface-color);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 600px;
  max-width: 700px;
}

.calculator-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.content-block {
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.content-block .calculator-card {
  /* max-width: 100%; */
  padding: 1rem;
  text-align: left;
  align-items: flex-start;
  gap: 0.5rem;
}

.content-block ul {
  list-style: none;
}

.home-block {
  padding: 1rem;
}

.home-block .calculator-card {
  max-width: 100%;
}

.list-items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-items li {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.list-items li:last-child {
  border-bottom: none;
}

.list-items li::before {
  content: "\2022";
  margin-right: 0.5rem;
}

.tools-list li::before {
  content: "";
  margin-right: 0;
}

.tips-list li::before {
  content: "💡";
  margin-right: 0.5rem;
}

.calculator-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  background: var(--surface-variant);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.calculator-title {
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.calculator-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.4;
  margin: 0;
}

/* Calculator Form Styles */
.calculator-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.calculator-form {
  background: var(--surface-color);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: left;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.2s;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.input-addon {
  position: absolute;
  right: 1rem;
  color: var(--text-secondary);
}

.calculate-btn {
  background: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  width: 100%;
  cursor: pointer;
  transition: all 0.2s;
}

.calculate-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.amount-words {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-style: italic;
  word-break: break-word;
}

/* Currency Input Styling */
.currency-input {
  appearance: textfield;
  -moz-appearance: textfield;
  -webkit-appearance: textfield;
}

.currency-input::-webkit-outer-spin-button,
.currency-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}

.input-addon-left {
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  border-right: none;
  padding: var(--input-padding);
  background: var(--surface-variant);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.form-input {
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.currency-input + .input-addon {
  display: none;
}

#errorMessage {
  color: white;
  margin-top: 0.625rem;
  text-align: center;
  display: none;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  background-color: var(--error-color);
}

.error-message {
  text-align: center;
  color: #ef4444;
}

.amount-breakdown {
  margin-top: 1rem;
}

/* Results Section */
.results-container {
  margin-top: 2rem;
  background: var(--surface-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.results-container h3 {
  color: var(--text-primary);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.chart-container {
  margin-top: 2rem;
  padding: 1rem;
  background: var(--surface-variant);
  border-radius: 8px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .grid-container {
    grid-template-columns: repeat(auto-fill, minmax(30%, 1fr));
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .grid-container {
    grid-template-columns: repeat(auto-fill, minmax(40%, 1fr));
    padding: 0;
  }

  .grid-container .calculator-card {
    min-width: 100%;
    max-width: 100%;
  }

  .calculator-card {
    margin: 0 auto;
    min-width: 90%;
    max-width: 100%;
  }

  .calculator-container {
    padding: 0.5rem;
  }

  .calculator-form {
    padding: 1.5rem;
  }

  .ads-container-horizontal {
    padding: 0 !important;
  }
}

@media (max-width: 480px) {
  .grid-container {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}