/* ========================================
   DESIGN TOKENS & THEME VARIABLES
   ======================================== */

:root {
  /* Colors */
  --color-primary: #20c997;
  --color-primary-dark: #1da980;
  --color-bg-dark: #1a1a1a;
  --color-bg-darker: #0f0f0f;
  --color-bg-card: #262626;
  --color-text-light: #e0e0e0;
  --color-text-lighter: #b0b0b0;
  --color-border: #20c997;

  /* Typography */
  --font-heading: "Playfair Display", serif;
  --font-body: "Inter", sans-serif;
}

/* ========================================
   RESET & GLOBAL STYLES
   ======================================== */

html,
body {
  height: 100%;
  font-family: var(--font-body);
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
}

body {
  overflow-x: hidden;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: #ffffff;
}

p {
  line-height: 1.6;
}

.lead {
  font-size: 1.1rem;
  line-height: 1.8;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.bg-dark {
  background-color: var(--color-bg-dark) !important;
}

.bg-darker {
  background-color: var(--color-bg-darker) !important;
}

.text-light {
  color: var(--color-text-light) !important;
}

.text-turquoise {
  color: var(--color-primary) !important;
}

.border-turquoise {
  border-color: var(--color-primary) !important;
}

.border-turquoise-left {
  border-left: 4px solid var(--color-primary) !important;
  border: none !important;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-turquoise {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg-dark);
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-turquoise:hover,
.btn-turquoise:focus {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-bg-dark);
}

.btn-outline-turquoise {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-outline-turquoise:hover {
  background-color: var(--color-primary);
  color: var(--color-bg-dark);
}

/* ========================================
   CARDS
   ======================================== */

.card-dark {
  background-color: var(--color-bg-card);
  border-color: var(--color-border);
}

.card-dark .card-body {
  padding: 1.5rem;
}

.card-dark .card-title {
  color: var(--color-primary);
}

.card-dark .card-text {
  color: var(--color-text-light);
}

/* ========================================
   NAVBAR
   ======================================== */

.navbar {
  background-color: var(--color-bg-dark) !important;
  border-color: var(--color-border) !important;
}

.navbar-brand {
  font-size: 1.3rem;
  color: #ffffff !important;
  font-family: var(--font-heading);
}

.navbar-nav .nav-link {
  color: var(--color-text-light) !important;
  transition: color 0.3s ease;
  margin-left: 1rem;
}

.navbar-nav .nav-link:hover {
  color: var(--color-primary) !important;
}

/* ========================================
   FORMS
   ======================================== */

.form-control,
.form-select {
  background-color: var(--color-bg-card) !important;
  border-color: var(--color-border) !important;
  color: var(--color-text-light) !important;
  transition: border-color 0.3s ease;
}

.form-control:focus,
.form-select:focus {
  background-color: var(--color-bg-card) !important;
  border-color: var(--color-primary-dark) !important;
  color: var(--color-text-light) !important;
  box-shadow: 0 0 0 0.2rem rgba(32, 201, 151, 0.25);
}

.form-control::placeholder {
  color: var(--color-text-lighter);
}

.form-label {
  color: var(--color-text-light);
  font-weight: 500;
}

/* ========================================
   ACCORDION
   ======================================== */

.accordion-button {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  border-color: var(--color-border);
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-bg-card);
  color: var(--color-primary);
}

.accordion-button:focus {
  border-color: var(--color-border);
  box-shadow: 0 0 0 0.25rem rgba(32, 201, 151, 0.25);
}

.accordion-body {
  background-color: var(--color-bg-card);
  color: var(--color-text-light);
  border-color: var(--color-border);
}

/* ========================================
   TIMELINE ANIMATION
   ======================================== */

.timeline {
  position: relative;
  padding: 2rem 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  display: flex;
  gap: 2rem;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-marker {
  width: 50px;
  height: 50px;
  background-color: var(--color-primary);
  color: var(--color-bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.5rem;
  flex-shrink: 0;
  box-shadow: 0 0 20px rgba(32, 201, 151, 0.5);
}

.timeline-content {
  flex: 1;
  padding: 1.5rem;
  background-color: var(--color-bg-card);
  border-left: 3px solid var(--color-primary);
  border-radius: 4px;
}

.timeline-content h4 {
  margin-bottom: 0.5rem;
}

/* ========================================
   SECTION STYLES
   ======================================== */

.hero {
  min-height: 500px;
  display: flex;
  align-items: center;
}

section {
  padding: 4rem 0;
}

/* ========================================
   IMAGE STYLES
   ======================================== */

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

.img-fluid.rounded-lg {
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

/* ========================================
   FOOTER
   ======================================== */

footer {
  background-color: var(--color-bg-darker) !important;
  border-color: var(--color-border) !important;
  margin-top: auto;
}

footer a {
  color: var(--color-primary);
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--color-primary-dark);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  .timeline::before {
    left: 25px;
  }

  .timeline-item {
    flex-direction: column !important;
    gap: 1rem;
  }

  .timeline-content {
    border-left: 3px solid var(--color-primary);
  }

  h1 {
    font-size: 2rem;
  }

  .navbar-nav .nav-link {
    margin-left: 0;
    margin-top: 0.5rem;
  }

  section {
    padding: 2rem 0;
  }
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

.card {
  animation: fadeIn 0.6s ease-out;
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.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;
}

/* Focus visible for keyboard navigation */
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}