/* ============================================================================
   ExpenseFlow Website - Styles
   Minimalist gold theme matching the app design
   ============================================================================ */

/* ============================================================================
   1. CSS CUSTOM PROPERTIES (Theme Variables)
   ============================================================================ */

:root {
  /* Colors */
  --color-primary: #725C0C;          /* Deep gold */
  --color-accent: #BFA100;           /* Bright gold */
  --color-background: #FFF8F0;       /* Warm off-white */
  --color-surface: #FFFFFF;          /* White */
  --color-text: #1F1B13;             /* Dark brown */
  --color-text-light: #4E4539;       /* Medium brown */
  --color-border: #E2D8C6;           /* Light gold border */
  --color-shadow: rgba(114, 92, 12, 0.1);

  /* Typography */
  --font-primary: 'Roboto', 'Noto Sans', system-ui, -apple-system, sans-serif;
  --font-size-base: 16px;
  --font-size-h1: 3rem;
  --font-size-h2: 2rem;
  --font-size-h3: 1.5rem;
  --font-size-h4: 1.25rem;
  --font-size-small: 0.875rem;
  --line-height-base: 1.6;
  --line-height-heading: 1.2;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Layout */
  --max-width-container: 1200px;
  --max-width-narrow: 800px;

  /* Breakpoints */
  --breakpoint-mobile: 768px;
  --breakpoint-tablet: 1024px;

  /* Other */
  --border-radius: 4px;
  --transition: all 0.3s ease;
}

/* ============================================================================
   2. RESET & BASE STYLES
   ============================================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover,
a:focus {
  color: var(--color-primary);
  text-decoration: underline;
}

ul, ol {
  margin-bottom: var(--spacing-md);
  margin-left: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================================================
   3. LAYOUT COMPONENTS
   ============================================================================ */

.container {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================================================
   4. HEADER & NAVIGATION
   ============================================================================ */

.site-header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: var(--spacing-lg);
}

.logo {
  height: 50px;
  width: auto;
}

.site-header nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.site-header nav a {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  position: relative;
  padding-bottom: 4px;
}

.site-header nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}

.site-header nav a:hover::after,
.site-header nav a:focus::after {
  width: 100%;
}

@media (max-width: var(--breakpoint-mobile)) {
  .logo-nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .site-header nav {
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
  }

  .site-header nav a {
    width: 100%;
  }
}

/* ============================================================================
   5. BUTTONS & INTERACTIVE ELEMENTS
   ============================================================================ */

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}

.btn:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-surface);
  box-shadow: 0 4px 12px rgba(114, 92, 12, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-accent);
  color: var(--color-text);
  box-shadow: 0 4px 12px rgba(191, 161, 0, 0.2);
}

.btn-block {
  display: block;
  width: 100%;
}

/* ============================================================================
   6. HERO SECTION
   ============================================================================ */

.hero {
  position: relative;
  min-height: 600px;
  background: url('assets/city-waypoints.jpeg') center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(114, 92, 12, 0.85) 0%,
    rgba(191, 161, 0, 0.75) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-surface);
}

.hero h1 {
  color: var(--color-surface);
  margin-bottom: var(--spacing-md);
  font-size: clamp(2rem, 5vw, 3.5rem);
}

.hero-subtitle {
  color: var(--color-surface);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-buttons .btn {
  font-size: 1.1rem;
  padding: 1rem 2.5rem;
}

.cta-buttons .btn-primary {
  background-color: #1e3a8a;
  color: #ffffff;
  border-color: #1e3a8a;
  font-weight: var(--font-weight-bold);
}

.cta-buttons .btn-primary:hover,
.cta-buttons .btn-primary:focus {
  background-color: #1e40af;
  border-color: #1e40af;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
}

.cta-buttons .btn-secondary {
  background-color: transparent;
  color: #ffffff;
  border-color: #ffffff;
}

.cta-buttons .btn-secondary:hover,
.cta-buttons .btn-secondary:focus {
  background-color: #ffffff;
  color: #1e3a8a;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
}

@media (max-width: var(--breakpoint-mobile)) {
  .hero {
    min-height: 400px;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .cta-buttons .btn {
    width: 100%;
  }
}

/* ============================================================================
   7. SECTIONS & CONTENT AREAS
   ============================================================================ */

section {
  padding: var(--spacing-xl) 0;
}

section h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.features {
  background-color: var(--color-surface);
}

.pricing {
  background-color: var(--color-background);
}

/* ============================================================================
   8. FEATURE CARDS
   ============================================================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.feature-card {
  background-color: var(--color-background);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  transition: var(--transition);
  text-align: left;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px var(--color-shadow);
  border-color: var(--color-accent);
}

.feature-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.feature-card p {
  margin-bottom: 0;
  color: var(--color-text-light);
  line-height: var(--line-height-base);
}

/* ============================================================================
   9. PRICING CARDS
   ============================================================================ */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.pricing-card {
  background-color: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border: 2px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px var(--color-shadow);
  transform: scale(1.02);
}

.pricing-card:hover {
  box-shadow: 0 8px 20px var(--color-shadow);
}

.pricing-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.price {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.price span {
  font-size: 1rem;
  font-weight: var(--font-weight-regular);
  color: var(--color-text-light);
}

.pricing-card ul {
  flex-grow: 1;
  margin-bottom: var(--spacing-lg);
  list-style: none;
  margin-left: 0;
}

.pricing-card li {
  margin-bottom: var(--spacing-sm);
  padding-left: 1.5rem;
  position: relative;
}

.pricing-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: var(--font-weight-bold);
}

.pricing-card .btn {
  width: 100%;
  text-align: center;
  margin-top: auto;
}

/* ============================================================================
   10. FOOTER
   ============================================================================ */

.site-footer {
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
  border-top: 2px solid var(--color-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-surface);
  font-weight: var(--font-weight-medium);
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-copy {
  text-align: right;
  color: rgba(255, 248, 240, 0.8);
}

.footer-copy p {
  margin-bottom: 0;
  font-size: 0.875rem;
}

@media (max-width: var(--breakpoint-mobile)) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .footer-copy {
    text-align: center;
  }
}

/* ============================================================================
   11. CONTENT SECTIONS
   ============================================================================ */

.content-section {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.content-section:last-child {
  border-bottom: none;
}

.content-section h2 {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.content-section h3 {
  text-align: left;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-h4);
  color: var(--color-primary);
}

.content-section ol,
.content-section ul {
  margin-left: var(--spacing-lg);
}

.content-section li {
  margin-bottom: var(--spacing-sm);
}

/* Article/Page Layout */
.article-wrapper {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.article-header {
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-md);
}

.article-header h1 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.article-header p {
  color: var(--color-text-light);
  font-style: italic;
  margin-bottom: 0;
}

.article-content {
  line-height: 1.8;
}

/* ============================================================================
   12. ACCESSIBILITY & FOCUS STATES
   ============================================================================ */

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-text: #000000;
    --color-background: #FFFFFF;
    --color-border: #000000;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================================
   13. PRINT STYLES
   ============================================================================ */

@media print {
  .site-header,
  .site-footer,
  .cta-buttons {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  a {
    color: #000;
  }
}

/* ============================================================================
   14. RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: var(--breakpoint-mobile)) {
  :root {
    --font-size-base: 15px;
    --font-size-h1: 2rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
  }

  section {
    padding: var(--spacing-lg) 0;
  }

  .feature-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .pricing-card.featured {
    transform: scale(1);
  }
}

/* ============================================================================
   15. FORM STYLES
   ============================================================================ */

.contact-form-section {
  max-width: 100%;
  margin: 0;
}

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

.form-group {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
}

.form-group:last-child {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  font-weight: var(--font-weight-medium);
  margin-bottom: 0;
  color: var(--color-text);
  font-size: 1.125rem;
}

.form-group label span[aria-label="required"] {
  color: #d32f2f;
  margin-left: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1.125rem;
  color: var(--color-text);
  background-color: var(--color-surface);
  transition: var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(191, 161, 0, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
  opacity: 0.7;
}

.form-group select {
  cursor: pointer;
  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='%23725C0C' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-message {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.form-message p {
  margin-bottom: 0;
}

.success-message {
  background-color: #e8f5e9;
  border: 2px solid #4caf50;
  color: #2e7d32;
}

.success-message a {
  color: #2e7d32;
  text-decoration: underline;
}

.error-message {
  background-color: #ffebee;
  border: 2px solid #f44336;
  color: #c62828;
}

.error-message a {
  color: #c62828;
  text-decoration: underline;
}

.contact-form .btn {
  width: 100%;
  padding: 0.875rem 2rem;
  border: none;
}

@media (max-width: var(--breakpoint-mobile)) {
  .contact-form-section {
    padding: 0 var(--spacing-sm);
  }

  .contact-form {
    padding: 0;
  }

  .form-group {
    margin-bottom: var(--spacing-md);
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 1rem;
    padding: 0.625rem;
  }

  .form-group label {
    font-size: 1rem;
  }

  .contact-form .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }
}

/* ============================================================================
   16. UTILITY CLASSES
   ============================================================================ */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}