/* ============================================
   ALLEVIATE AB - MAIN STYLESHEET
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */
:root {
  /* Colors */
  --color-primary: #006B7D;      /* Dark Teal */
  --color-primary-dark: #005F73;
  --color-primary-light: #0891A7;
  --color-secondary: #0284C7;    /* Blue */
  --color-secondary-dark: #0369a1;
  --color-accent: #7C3AED;       /* Purple */
  --color-accent-dark: #6d28d9;

  /* Neutral colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  --color-white: #ffffff;
  --color-black: #000000;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* 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;

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;

  /* Borders */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

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

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

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--color-gray-50);
}

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

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

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

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-gray-800);
  transition: var(--transition-fast);
  border-radius: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-menu a {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-fast);
  padding: var(--spacing-sm) 0;
}

.nav-menu a:hover {
  color: var(--color-primary);
}

.nav-menu .cta-button {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-fast);
}

.nav-menu .cta-button:hover {
  background-color: var(--color-primary-dark);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  margin-top: var(--header-height);
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(rgba(0, 107, 125, 0.75), rgba(0, 107, 125, 0.75)), url('../images/pexels-efrem-efre-2786187-31146748-gothenburg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-white);
  text-align: center;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: clamp(2rem, 5vw, 3rem);
}

.hero .subtitle {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  text-align: center;
  font-size: var(--font-size-base);
}

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

.btn-primary:hover {
  background-color: var(--color-gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-link {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.btn-link::after {
  content: '→';
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
  max-width: 800px;
  margin: 0 auto;
}

.about p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.service-card {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.service-icon i {
  color: var(--color-primary);
  transition: transform var(--transition-normal), color var(--transition-normal);
}

.service-card:hover .service-icon i {
  transform: scale(1.1);
  color: var(--color-secondary);
}

.service-card h3 {
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xl);
}

.service-card p {
  color: var(--color-gray-600);
  flex-grow: 1;
  margin-bottom: var(--spacing-lg);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
  background-color: var(--color-gray-50);
}

.contact-wrapper {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-700);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.form-submit {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-fast);
  font-size: var(--font-size-lg);
}

.form-submit:hover {
  background-color: var(--color-primary-dark);
}

.form-message {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  text-align: center;
  font-weight: var(--font-weight-medium);
  display: none;
}

.form-message.success {
  display: block;
  background-color: #CCEFF5;
  color: var(--color-primary-dark);
  border: 1px solid var(--color-primary-light);
}

.form-message.error {
  display: block;
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #f87171;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-section p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.footer-section ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-section ul a {
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-section ul a:hover {
  color: var(--color-primary-light);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-gray-800);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
}

.footer-bottom a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer-bottom a:hover {
  color: var(--color-primary-light);
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE
   ============================================ */
@media (max-width: 768px) {

  /* Header & Navigation */
  .menu-toggle {
    display: flex;
  }

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

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

  .nav-menu li {
    border-bottom: 1px solid var(--color-gray-200);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-menu a {
    display: block;
    padding: var(--spacing-md) 0;
  }

  .nav-menu .cta-button {
    margin-top: var(--spacing-md);
    text-align: center;
  }

  /* Menu toggle animation */
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

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

  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .hero .subtitle {
    font-size: var(--font-size-xl);
  }

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

  /* Services grid */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  /* Buttons */
  .cta-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* ============================================
   RESPONSIVE DESIGN - TABLET
   ============================================ */
@media (min-width: 769px) and (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}