/* Buttons, forms, badges, modal, FAQ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition),
    transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-mid), var(--primary-light));
  color: #020617;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  color: #020617;
  box-shadow: 0 10px 28px rgba(56, 189, 248, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  color: var(--text);
  background: rgba(56, 189, 248, 0.08);
  border-color: var(--primary-light);
}

.btn-lg {
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
}

.badge-active {
  color: var(--success);
  background: rgba(52, 211, 153, 0.12);
  border-color: rgba(52, 211, 153, 0.35);
}

.badge-active::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5);
  animation: pulse-dot 1.8s ease infinite;
}

.badge-soon {
  color: var(--warning);
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
}

.badge-dev {
  color: var(--accent);
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.28);
}

.badge-roadmap {
  color: var(--roadmap);
  background: rgba(96, 165, 250, 0.1);
  border-color: rgba(96, 165, 250, 0.28);
}

@keyframes pulse-dot {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.45);
  }
  50% {
    box-shadow: 0 0 0 5px rgba(52, 211, 153, 0);
  }
}

/* Forms */
.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  width: 100%;
  max-width: 480px;
}

.form-row input {
  flex: 1 1 200px;
  min-width: 0;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.85);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input::placeholder {
  color: var(--text-dim);
}

.form-row input:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.form-message {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  min-height: 1.4em;
}

.form-message.is-success {
  color: var(--success);
}

.form-message.is-error {
  color: #f87171;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(6px);
}

.modal-panel {
  position: relative;
  width: min(100%, 420px);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-strong);
  background: var(--bg-panel-solid);
  box-shadow: var(--shadow-soft);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--transition);
}

.modal.is-open .modal-panel {
  transform: none;
}

.modal-close {
  position: absolute;
  top: 0.85rem;
  inset-inline-start: 0.85rem;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.modal-panel h3 {
  margin-bottom: 0.5rem;
  padding-inline-end: 2rem;
}

.modal-panel > p {
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
}

/* FAQ accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 800px;
  margin-inline: auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(15, 23, 42, 0.55);
  overflow: hidden;
  transition:
    border-color var(--transition),
    background var(--transition),
    box-shadow var(--transition);
}

.faq-item:hover {
  border-color: var(--border-strong);
}

.faq-item[open] {
  border-color: var(--border-strong);
  background:
    linear-gradient(135deg, rgba(29, 78, 216, 0.12), transparent 55%),
    rgba(15, 23, 42, 0.72);
  box-shadow: 0 8px 28px rgba(2, 6, 23, 0.35);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.05rem 1.2rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-num {
  flex-shrink: 0;
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary-light);
  opacity: 0.85;
  min-width: 1.6rem;
}

.faq-q {
  flex: 1;
  text-align: start;
  line-height: 1.5;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1;
  color: var(--primary-light);
  flex-shrink: 0;
  margin-inline-start: auto;
  transition: transform var(--transition), color var(--transition);
}

.faq-item[open] summary::after {
  content: "−";
  color: var(--accent);
}

.faq-item .faq-body {
  padding: 0 1.2rem 1.2rem;
  padding-inline-start: calc(1.2rem + 1.6rem + 0.85rem);
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.85;
}

.faq-item .faq-body a {
  font-weight: 600;
}

@media (max-width: 560px) {
  .faq-item .faq-body {
    padding-inline-start: 1.2rem;
  }
}

/* Feature icon block */
.icon-box {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(37, 99, 235, 0.12);
  color: var(--primary-light);
  margin-bottom: 1rem;
}

.icon-box svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}