/* ==========================================================================
   Accounting Firm Website - Stylesheet
   ========================================================================== */

/* Self-hosted fonts (latin subset) */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/montserrat-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('../fonts/open-sans-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
  /* Primary Colors */
  --primary-blue: #071825;
  --primary-blue-light: #18474d;
  --primary-blue-dark: #040f14;

  /* Accent Colors */
  --accent-teal: #027973;
  --accent-teal-light: #029e96;
  --accent-teal-dark: #015450;

  /* Neutral Colors */
  --white: #ffffff;
  --light-gray: #f9ecda;
  --medium-gray: #666666;
  --dark-gray: #333333;

  /* Functional Colors */
  --success: #5cb85c;
  --error: #d9534f;
  --warning: #f0ad4e;

  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

  /* Header Height */
  --header-height: 80px;
  --header-height-mobile: 60px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--medium-gray);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary-blue);
}

h1 {
  font-size: 36px;
}

h2 {
  font-size: 28px;
}

h3 {
  font-size: 22px;
  color: var(--dark-gray);
}

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

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-blue-light);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  text-align: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--accent-teal);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--accent-teal-dark);
  color: var(--white);
}

.btn-primary:disabled {
  background-color: var(--medium-gray);
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--primary-blue);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: var(--primary-blue-light);
  color: var(--white);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  height: 69px;
}

.logo img {
  height: 100%;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--dark-gray);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-teal);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--dark-gray);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + var(--spacing-2xl));
  padding-bottom: var(--spacing-2xl);
  background-color: var(--primary-blue);
  background-image: url('../images/pattern.svg');
  background-repeat: repeat;
  background-size: 227px;
}

.hero .container {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  color: var(--white);
}

.hero h1 strong,
.hero .hero-subtitle strong {
  color: var(--accent-teal) !important;
}

.hero-subtitle {
  font-size: 18px;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  color: rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   Services Section
   ========================================================================== */

.keywordstyling-container strong {
    color: #000000;
    font-weight: bold;
}

.services {
  scroll-margin-top: var(--header-height);
  padding: var(--spacing-2xl) 0;
  background-color: var(--white);
}

.services h2 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.services-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.services-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-xl);
}

.services-grid .service-card {
  flex: 0 1 calc(33.333% - var(--spacing-xl));
  max-width: calc(33.333% - var(--spacing-xl));
}

.service-card {
  background-color: var(--white);
  border: 1px solid var(--primary-blue-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

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

.service-card p {
  color: var(--medium-gray);
  margin-bottom: var(--spacing-sm);
}

.service-card p:last-of-type {
  margin-bottom: 0;
}

/* Expandable Service Cards */
.service-card-content {
  display: none;
}

.service-card.expanded .service-card-content {
  display: block;
}

.service-card-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: none;
  border: none;
  color: var(--accent-teal);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.service-card-toggle:hover {
  color: var(--accent-teal-dark);
}

.service-card-toggle::after {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--transition-fast);
  margin-bottom: 4px;
}

.service-card.expanded .service-card-toggle::after {
  transform: rotate(-135deg);
  margin-bottom: 0;
  margin-top: 4px;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  scroll-margin-top: var(--header-height);
  padding: var(--spacing-2xl) 0;
  background-color: var(--primary-blue);
  background-image: url('../images/pattern.svg');
  background-repeat: repeat;
  background-size: 227px;
}

.contact-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.contact-header h2 {
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.contact-header p {
  color: rgba(255, 255, 255, 0.8);
}

/* Contact Form */
.contact-form {
  background-color: var(--white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto;
}

.form-row {
  display: flex;
  gap: var(--spacing-lg);
}

.form-row .form-group {
  flex: 1;
}

.form-row-bottom {
  align-items: flex-start;
  flex-wrap: wrap;
}

.form-row-bottom .form-group:first-child {
  flex: 1 1 auto;
}

.form-group-turnstile {
  flex: 0 0 auto;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--dark-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-body);
  font-size: 16px;
  border: 1px solid var(--medium-gray);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 61, 102, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: var(--error);
}

.error-message {
  color: var(--error);
  font-size: 14px;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-group.has-error .error-message {
  display: block;
}

/* Radio Buttons */
.radio-group {
  display: flex;
  gap: var(--spacing-lg);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-weight: normal;
}

.radio-label input {
  width: auto;
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.checkbox-group input {
  width: auto;
  margin-top: 4px;
}

.checkbox-group label {
  font-weight: normal;
  font-size: 14px;
  line-height: 1.4;
}

/* Form Messages */
.form-success,
.form-error {
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-lg);
  display: none;
}

.form-success {
  background-color: rgba(92, 184, 92, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
}

.form-error {
  background-color: rgba(217, 83, 79, 0.1);
  border: 1px solid var(--error);
  color: var(--error);
}

.form-success.show,
.form-error.show {
  display: block;
}

/* Button Loading State */
.btn-loading {
  position: relative;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--white);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background-color: var(--primary-blue-dark);
  color: var(--white);
  padding: var(--spacing-xl) 0;
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-logo img {
  height: 30px;
  width: auto;
}

.footer-copyright {
  font-size: 14px;
  color: var(--white);
}

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

.footer-links a {
  color: var(--white);
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--white);
}

/* ==========================================================================
   Legal Pages (Privacy Policy, Terms of Service)
   ========================================================================== */

.legal-page {
  padding-top: calc(var(--header-height) + var(--spacing-2xl));
  padding-bottom: var(--spacing-3xl);
  min-height: 100vh;
}

.legal-page h1 {
  margin-bottom: var(--spacing-lg);
}

.legal-page h2 {
  font-size: 22px;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.legal-page p,
.legal-page ul {
  margin-bottom: var(--spacing-md);
}

.legal-page ul {
  padding-left: var(--spacing-xl);
}

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

/* ==========================================================================
   Responsive Styles
   ========================================================================== */

/* Tablet */
@media (max-width: 1023px) {
  .services-grid .service-card {
    flex: 0 1 calc(50% - var(--spacing-xl));
    max-width: calc(50% - var(--spacing-xl));
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .form-row-bottom {
    flex-direction: column;
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --header-height: 60px;
  }

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 24px;
  }

  h3 {
    font-size: 20px;
  }

  .logo {
    height: 45px;
  }

  /* Mobile Navigation */
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--white);
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  /* Services */
  .services-grid .service-card {
    flex: 0 1 100%;
    max-width: 100%;
  }

  /* Hero */
  .hero {
    padding-top: calc(var(--header-height) + var(--spacing-lg));
    padding-bottom: var(--spacing-lg);
  }

  .hero .container {
    padding: var(--spacing-md);
  }

  /* Footer */
  .footer .container {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* ==========================================================================
   Focus States (Accessibility)
   ========================================================================== */

a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 3px solid var(--accent-teal-light);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-blue);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--spacing-md);
}