/* ==========================================================================
   Publications Page Styles
   HSM Group Static Site
   ========================================================================== */

/* ==========================================================================
   External Publications (FlippingBook)
   ========================================================================== */

.publications-hero {
  background-color: var(--color-primary);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.publications-hero-title {
  font-family: var(--font-heading-italic);
  font-style: italic;
  font-size: var(--font-size-4xl);
  color: var(--color-white);
  margin: 0;
}

.publications-external {
  background-color: var(--color-bg);
  padding: var(--spacing-3xl) 0;
}

.publications-external .container {
  max-width: 1400px;
}

.publications-grid-external {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.publication-item-external {
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.publication-item-external iframe {
  width: 100%;
  height: 560px;
  border: none;
  display: block;
}

.publication-item-title {
  padding: var(--spacing-md);
  margin: 0;
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   Password Gate
   ========================================================================== */

.password-gate {
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
}

.password-form {
  background-color: var(--color-white);
  padding: var(--spacing-2xl) var(--spacing-3xl);
  box-shadow: var(--shadow-lg);
  max-width: 400px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

.password-icon {
  font-size: 48px;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.password-form h2 {
  margin-bottom: var(--spacing-sm);
}

.password-form p {
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-lg);
}

.password-form .form-control {
  text-align: center;
  font-size: var(--font-size-lg);
  letter-spacing: 2px;
  margin-bottom: var(--spacing-lg);
}

.password-form .alert {
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

/* ==========================================================================
   Publications Grid
   ========================================================================== */

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

.publications-intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.publications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.publication-card {
  display: block;
  text-decoration: none;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

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

.publication-thumb-wrapper {
  aspect-ratio: 3/4;
  overflow: hidden;
  background-color: var(--color-bg);
}

.publication-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.publication-card:hover .publication-thumb {
  transform: scale(1.05);
}

.publication-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0294b8 100%);
  color: var(--color-white);
  font-size: 64px;
}

.publication-title {
  padding: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--color-text);
  margin: 0;
}

/* ==========================================================================
   Flipbook Viewer
   ========================================================================== */

body.viewer-mode {
  background-color: #1a1a1a;
}

body.viewer-mode .topbar {
  display: none;
}

.flipbook-header {
  background-color: var(--color-black);
  padding: var(--spacing-md) 0;
}

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

.flipbook-title {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  margin: 0;
  flex: 1;
}

.flipbook-viewer {
  min-height: calc(100vh - 200px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background-color: #1a1a1a;
}

#flipbook-container {
  margin-bottom: var(--spacing-xl);
}

#flipbook {
  background-color: #333;
}

#flipbook .page {
  background-color: white;
  overflow: hidden;
}

#flipbook .page canvas {
  width: 100%;
  height: auto;
}

.flipbook-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  color: var(--color-white);
}

#page-info {
  min-width: 150px;
  text-align: center;
}

.flipbook-placeholder {
  text-align: center;
  color: var(--color-white);
  padding: var(--spacing-3xl);
}

.placeholder-icon {
  font-size: 72px;
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-lg);
}

/* Icon for PDF */
.fa-file-pdf-o::before { content: '\f1c1'; }
.fa-book::before { content: '\f02d'; }

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

.flipbook-placeholder p {
  color: var(--color-text-gray);
  margin-bottom: var(--spacing-xl);
}

.error {
  color: #dc3545;
  text-align: center;
  padding: var(--spacing-xl);
}

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

@media (max-width: 979px) {
  .publications-grid,
  .publications-grid-external {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .publication-item-external iframe {
    height: 490px;
  }

  .flipbook-nav {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }

  .flipbook-title {
    font-size: var(--font-size-lg);
  }

  #flipbook-container {
    width: 100%;
    overflow-x: auto;
  }

  .flipbook-controls {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .page-header-flex {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .publication-thumb-placeholder {
    font-size: 48px;
  }
}

@media (max-width: 480px) {
  .publications-grid {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
  }

  .publications-grid-external {
    grid-template-columns: 1fr;
  }

  .publications-hero-title {
    font-size: var(--font-size-2xl);
  }

  .publication-item-external iframe {
    height: 420px;
  }

  .password-form {
    padding: var(--spacing-xl);
  }

  .flipbook-controls {
    gap: var(--spacing-sm);
  }

  .flipbook-controls .btn {
    padding: 8px 12px;
    font-size: var(--font-size-sm);
  }

  #page-info {
    min-width: auto;
    width: 100%;
    order: -1;
    margin-bottom: var(--spacing-sm);
  }
}