/* ==========================================================================
   Free Materials & Knowledge Hub (materialy.html)
   ========================================================================== */

.materials-hub-container {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   Materials Grid & Cards
   -------------------------------------------------------------------------- */
.materials-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  text-align: left;
}

.material-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 28px 26px 24px;
  border-radius: var(--radius-2xl);
  cursor: pointer;
  height: 100%;
  border: 1.5px solid var(--color-blue-border);
  background: var(--color-bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform 0.32s var(--ease-out-expo), border-color 0.28s ease, box-shadow 0.28s ease;
  position: relative;
  overflow: hidden;
  animation: slideUpIn 0.6s var(--ease-out-expo) both;
}

.material-card:hover {
  border-color: var(--color-blue);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.material-card:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Xiaomi Minimalist Feature Grid in Cards
   -------------------------------------------------------------------------- */
.material-card-top-clean {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.material-card-title-clean {
  margin-top: 14px;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-text-main);
  line-height: 1.22;
}

.xiaomi-card-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  margin: 18px 0 22px;
  padding: 16px 8px;
  background: rgba(28, 134, 238, 0.03);
  border: 1px solid rgba(28, 134, 238, 0.1);
  border-radius: var(--radius-xl);
}

.xiaomi-feature-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 7px;
}

.xiaomi-circle-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1.5px solid rgba(28, 134, 238, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  box-shadow: 0 4px 12px rgba(28, 134, 238, 0.08);
  transition: transform 0.25s var(--ease-out-back), border-color 0.25s ease, box-shadow 0.25s ease;
}

.material-card:hover .xiaomi-circle-icon {
  transform: translateY(-2px) scale(1.06);
  border-color: var(--color-blue);
  box-shadow: 0 6px 16px rgba(28, 134, 238, 0.16);
}

.material-card-upcoming .xiaomi-card-features {
  background: rgba(255, 122, 41, 0.03);
  border-color: rgba(255, 122, 41, 0.12);
}

.material-card-upcoming .xiaomi-circle-icon {
  border-color: rgba(255, 122, 41, 0.25);
  color: var(--color-orange);
  box-shadow: 0 4px 12px rgba(255, 122, 41, 0.08);
}

.material-card-upcoming:hover .xiaomi-circle-icon {
  transform: none;
  border-color: rgba(255, 122, 41, 0.35);
}

.xiaomi-feature-label {
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-text-main);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.xiaomi-feature-sub {
  font-size: 0.71875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.2;
}

.material-card-footer-clean {
  margin-top: auto;
  width: 100%;
}

.xiaomi-card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  background: var(--color-blue);
  color: #FFFFFF;
  border: none;
  cursor: pointer;
  transition: all 0.22s ease;
  box-shadow: 0 4px 14px rgba(28, 134, 238, 0.22);
}

.material-card:hover .xiaomi-card-btn {
  background: var(--color-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(28, 134, 238, 0.32);
}

.xiaomi-card-btn.is-disabled {
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text-muted);
  box-shadow: none;
  cursor: default;
}

/* Upcoming (disabled/placeholder) card */
.material-card-upcoming {
  cursor: default;
  border-style: dashed;
  background: rgba(255, 255, 255, 0.6);
}

.material-card-upcoming:hover {
  transform: none;
  box-shadow: var(--shadow-card);
  border-color: var(--color-blue-border);
}

/* --------------------------------------------------------------------------
   Modal Dialog
   -------------------------------------------------------------------------- */
.material-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(15, 23, 42, 0.58);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.26s ease, visibility 0.26s ease;
}

.material-modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.material-modal-box {
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border-radius: var(--radius-2xl);
  border: 1.5px solid var(--color-blue-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
  overflow: hidden;
  transform: scale(0.95) translateY(14px);
  transition: transform 0.26s var(--ease-out-back);
}

.material-modal-backdrop.is-open .material-modal-box {
  transform: scale(1) translateY(0);
}

.material-modal-header {
  padding: 22px 26px;
  border-bottom: 1px solid rgba(28, 134, 238, 0.14);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  background: #FAFCFE;
}

.material-modal-close {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-blue-border);
  background: #FFFFFF;
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.material-modal-close:hover {
  background: var(--color-blue);
  color: #FFFFFF;
  border-color: var(--color-blue);
  transform: scale(1.08) rotate(90deg);
}

.material-modal-body {
  padding: 22px 26px;
  overflow-y: auto;
  flex: 1;
}

/* 3 Mini-Steps */
.modal-steps-mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.modal-step-card {
  background: rgba(28, 134, 238, 0.04);
  border: 1px solid rgba(28, 134, 238, 0.14);
  border-radius: var(--radius-xl);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.modal-step-card:hover {
  border-color: rgba(28, 134, 238, 0.35);
  background: rgba(28, 134, 238, 0.07);
}

.modal-step-icon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: #FFFFFF;
  border: 1px solid rgba(28, 134, 238, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
  flex-shrink: 0;
  box-shadow: 0 2px 5px rgba(28, 134, 238, 0.08);
}

.modal-step-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.modal-step-title {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
}

.modal-step-desc {
  font-size: 0.78125rem;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.modal-step-desc a {
  color: var(--color-blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.modal-step-desc a:hover {
  color: var(--color-blue-dark);
}

/* Modal Main Actions Row */
.modal-main-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

/* Toggle Prompt Preview */
.btn-toggle-prompt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: 1px dashed var(--color-blue-border);
  border-radius: 12px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-blue-dark);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.btn-toggle-prompt:hover {
  background: rgba(28, 134, 238, 0.05);
  border-color: var(--color-blue);
}

.btn-toggle-prompt .chevron-icon {
  transition: transform 0.25s ease;
}

.btn-toggle-prompt.is-expanded .chevron-icon {
  transform: rotate(180deg);
}

.prompt-preview-collapse {
  margin-top: 14px;
  animation: fadeIn 0.22s ease-out;
}

.modal-prompt-wrapper {
  border: 1px solid var(--color-blue-border);
  border-radius: 14px;
  background: #F8FAFC;
  overflow: hidden;
}

.modal-prompt-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(28, 134, 238, 0.06);
  border-bottom: 1px solid var(--color-blue-border);
}

.modal-prompt-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-blue-dark);
}

.btn-copy-modal {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78125rem;
  font-weight: 700;
  background: var(--color-blue);
  color: #FFFFFF;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-copy-modal:hover {
  background: var(--color-blue-dark);
  transform: translateY(-1px);
}

.btn-copy-modal.is-copied,
.btn-cta.is-copied {
  background: #10B981 !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35) !important;
}

.modal-prompt-pre {
  padding: 18px;
  max-height: 280px;
  overflow-y: auto;
  font-family: var(--font-main);
  font-size: 0.8125rem;
  line-height: 1.62;
  color: var(--color-text-main);
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  background: #FCFDFF;
}

.modal-prompt-pre::-webkit-scrollbar {
  width: 6px;
}
.modal-prompt-pre::-webkit-scrollbar-track {
  background: rgba(28, 134, 238, 0.03);
}
.modal-prompt-pre::-webkit-scrollbar-thumb {
  background: rgba(28, 134, 238, 0.22);
  border-radius: 999px;
}
.modal-prompt-pre::-webkit-scrollbar-thumb:hover {
  background: var(--color-blue);
}

.material-modal-footer {
  padding: 16px 26px;
  border-top: 1px solid rgba(28, 134, 238, 0.12);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  background: #FAFCFE;
}

.materials-actions {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid rgba(28, 134, 238, 0.14);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .materials-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 28px;
  }

  .material-card {
    padding: 22px 20px;
  }

  .material-card h3 {
    font-size: 1.2rem;
  }

  .xiaomi-card-features {
    padding: 12px 6px;
    gap: 6px;
    margin: 14px 0 18px;
  }

  .xiaomi-circle-icon {
    width: 40px;
    height: 40px;
  }

  .xiaomi-circle-icon svg {
    width: 18px;
    height: 18px;
  }

  .xiaomi-feature-label {
    font-size: 0.75rem;
  }

  .xiaomi-feature-sub {
    font-size: 0.6875rem;
  }

  .material-modal-box {
    max-height: 94vh;
  }

  .material-modal-header {
    padding: 16px 18px;
  }

  .material-modal-body {
    padding: 16px 18px;
  }

  .modal-steps-mini {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 16px;
  }

  .modal-step-card {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
  }

  .modal-main-actions {
    flex-direction: column;
    gap: 10px;
  }

  .modal-main-actions .btn-cta,
  .modal-main-actions .btn-outline {
    width: 100%;
  }

  .modal-prompt-pre {
    max-height: 220px;
  }

  .material-modal-footer {
    padding: 12px 18px;
  }

  .material-modal-footer button {
    width: 100%;
    justify-content: center;
  }
}