/* ==========================================================================
   SPSS Analiz - Main Stylesheet
   ========================================================================== */

/* CSS Variables */
:root {
  --color-primary: #1E5AA7;
  --color-accent: #0F3460;
  --color-gray-900: #111111;
  --color-gray-600: #666666;
  --color-gray-300: #d1d5db;
  --color-gray-100: #f3f4f6;
  --color-bg: #ffffff;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  --font-primary: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  
  --container-max-width: 1200px;
  --header-height: 110px;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--color-gray-900);
  background-color: var(--color-bg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-accent);
  outline: 2px solid transparent;
}

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

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Skip to Content */
.skip-to-content,
.skip-link {
  display: none !important;
}



/* Header */
.header {
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

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

.header__logo {
  height: 100px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
}

/* Navigation */
.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: block;
  padding: var(--spacing-xs) 0;
  font-weight: 500;
  color: var(--color-gray-900);
  transition: color 0.2s ease;
}

.nav__link:hover,
.nav__link:focus {
  color: var(--color-primary);
}

/* Dropdown Menu */
.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius);
  min-width: 250px;
  padding: var(--spacing-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
}

.nav__item:hover .nav__dropdown,
.nav__item:focus-within .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--color-gray-600);
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
}

.nav__dropdown-link:hover,
.nav__dropdown-link:focus {
  background: var(--color-gray-100);
  color: var(--color-primary);
}

/* Mobile Menu Button */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
}

.nav__toggle:focus {
  outline: none;
}

.nav__hamburger {
  width: 24px;
  height: 2px;
  background: var(--color-gray-900);
  position: relative;
  transition: background 0.2s ease;
}

.nav__hamburger::before,
.nav__hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-gray-900);
  transition: all 0.2s ease;
}

.nav__hamburger::before { top: -8px; }
.nav__hamburger::after { top: 8px; }

.nav__toggle[aria-expanded="true"] .nav__hamburger {
  background: transparent;
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.nav__toggle[aria-expanded="true"] .nav__hamburger::after {
  transform: rotate(-45deg);
  top: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  gap: var(--spacing-xs);
}

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

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

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

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

.btn--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* Sticky Action Buttons */
.sticky-actions {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  z-index: 90;
}

.sticky-actions__btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all 0.2s ease;
}

.sticky-actions__btn--phone {
  background: var(--color-success);
  color: white;
}

.sticky-actions__btn--whatsapp {
  background: #25d366;
  color: white;
}

.sticky-actions__btn:hover,
.sticky-actions__btn:focus {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: white;
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
  opacity: 0.3;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

/* Cards */
.card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  transition: all 0.2s ease;
  height: 100%;
}

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

.card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: white;
  font-size: 24px;
}

.card__title {
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.card__description {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Sections */
.section {
  padding: var(--spacing-2xl) 0;
}

.section--gray {
  background: var(--color-gray-100);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  color: var(--color-gray-600);
  font-size: var(--font-size-lg);
}

/* Breadcrumbs */
.breadcrumb {
  background: var(--color-gray-100);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
}

.breadcrumb__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
  align-items: center;
}

.breadcrumb__separator {
  color: var(--color-gray-600);
}

.breadcrumb__link {
  color: var(--color-gray-600);
}

.breadcrumb__current {
  color: var(--color-gray-900);
  font-weight: 500;
}

/* Forms */
.form {
  max-width: 600px;
}

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

.form__label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-gray-900);
}

.form__label--required::after {
  content: '*';
  color: var(--color-error);
  margin-left: 4px;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  transition: border-color 0.2s ease;
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

.form__checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form__checkbox {
  margin-top: 2px;
}

.form__error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

/* FAQ */
.faq__item {
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
}

.faq__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s ease;
}

.faq__question:hover,
.faq__question:focus {
  background: var(--color-gray-100);
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(180deg);
}

.faq__icon {
  display: none;
  transition: transform 0.2s ease;
}

.faq__answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--color-gray-600);
  display: none;
}

.faq__answer.is-open {
  display: block;
}

/* Footer */
.footer {
  background: var(--color-gray-900);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__content {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__section h3 {
  margin-bottom: var(--spacing-md);
  color: white;
}

.footer__section p,
.footer__section a {
  color: #d1d5db;
  margin-bottom: var(--spacing-xs);
}

.footer__section a:hover,
.footer__section a:focus {
  color: white;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--spacing-xs);
}

.footer__bottom {
  border-top: 1px solid #374151;
  padding-top: var(--spacing-lg);
  text-align: center;
  color: #9ca3af;
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 991px) {
  :root {
    --font-size-3xl: 36px;
    --font-size-2xl: 28px;
  }
  
  .nav__list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .nav__list.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__toggle {
    display: block;
  }
  
  .nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: var(--color-gray-100);
    margin-top: var(--spacing-sm);
  }
}

@media (max-width: 767px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --header-height: 90px;
  }
  
  .header__logo {
    height: 90px;
    max-width: 280px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .sticky-actions {
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
  }
  
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575px) {
  :root {
    --font-size-3xl: 28px;
    --font-size-2xl: 24px;
  }
  
  .btn--large {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

/* Animation Utilities */
.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Loading States */
.is-loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Print Styles */
@media print {
  .header,
  .sticky-actions,
  .nav,
  .footer {
    display: none !important;
  }
  
  .hero {
    background: none !important;
    color: var(--color-gray-900) !important;
  }
}