/* ===========================================
   FASTWEB — 컴포넌트 스타일 (다크 테마)
   버튼 / 배지 / 카드 / FAQ 아코디언 / 섹션 레이블 / 소셜 프루프
   모달 (문의 폼 + 서비스 상세보기)
   =========================================== */

/* =====================
   1. 버튼
   ===================== */

/* Primary 버튼 — 아웃라인 스타일 (시안 테두리 + 투명 배경) */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  background: rgba(6, 182, 212, 0.08);
  color: var(--color-accent-400);
  border: 1.5px solid var(--color-accent-400);
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  cursor: pointer;
  transition:
    background var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base);
  text-decoration: none;
  min-height: 44px;
  white-space: nowrap;
}
.btn-primary:hover {
  background: rgba(6, 182, 212, 0.18);
  color: var(--color-white);
  border-color: var(--color-accent-500);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.25);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}
.btn-primary:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 3px;
}

/* Primary Large — Hero, 최종 CTA (같은 크기 유지, 너무 크지 않게) */
.btn-primary--lg {
  padding: 14px 32px;
  font-size: var(--text-body-lg);
}

/* Primary Small — 헤더 CTA */
.btn-primary--sm {
  padding: 6px 16px;
  font-size: var(--text-body-xs);
  font-weight: 500;
  height: auto;
  min-height: 36px;
}

/* Secondary 버튼 — 다크 테마 위 보조 CTA */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 20px;
  background: transparent;
  color: var(--btn-secondary-text);
  border: 1.5px solid var(--btn-secondary-border);
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-size: var(--text-body-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  min-height: 44px;
  white-space: nowrap;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.35);
}

/* Ghost 버튼 — 다크 배경 위 보조 버튼 */
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
  border: 1.5px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  min-height: 44px;
  white-space: nowrap;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
}

/* 화살표 아이콘 (버튼 안) */
.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: transform var(--transition-base);
}
.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow {
  transform: translateX(3px);
}

/* =====================
   2. 배지 / 태그 (다크 테마)
   ===================== */

/* 신뢰 배지 (그린) */
.badge-trust {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  background: var(--badge-trust-bg);
  color: var(--badge-trust-text);
  border-radius: var(--radius-full);
  font-size: var(--text-body-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  white-space: nowrap;
}

/* 블루 배지 (카테고리, 서비스 분류) */
.badge-blue {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  background: var(--badge-blue-bg);
  color: var(--badge-blue-text);
  border-radius: var(--radius-full);
  font-size: var(--text-body-xs);
  font-weight: 600;
  white-space: nowrap;
}

/* 중립 배지 */
.badge-neutral {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--badge-neutral-bg);
  color: var(--badge-neutral-text);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  font-size: var(--text-body-xs);
  font-weight: 500;
  white-space: nowrap;
}

/* 다크 배경 위 배지 (기술 스택 태그) */
.badge-dark {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #D1D5DB;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  font-family: var(--font-accent);
  font-size: var(--text-body-sm);
  font-weight: 500;
  white-space: nowrap;
}

/* 카테고리 배지 (포트폴리오) */
.badge-category {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  background: rgba(6, 182, 212, 0.12);
  color: #67E8F9;
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* =====================
   3. 카드 공통 기반 (다크)
   ===================== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  transition:
    box-shadow var(--transition-slow),
    transform var(--transition-slow),
    border-color var(--transition-slow);
}
.card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* 인터랙티브 카드 (호버 시 위로 이동) */
.card--interactive {
  cursor: default;
}
.card--interactive:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* =====================
   4. 섹션 레이블 (공통)
   ===================== */
.section-label {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--text-body-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent-400);
  margin-bottom: var(--space-3);
}

/* =====================
   5. FAQ 아코디언 (다크 테마)
   ===================== */
.faq-list {
  max-width: 760px;
  margin-inline: auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-default);
}
.faq-item:first-child {
  border-top: 1px solid var(--border-default);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6) 0;
  cursor: pointer;
  font-size: var(--text-body-xl);
  font-weight: 600;
  color: var(--text-heading);
  transition: color var(--transition-base);
  gap: var(--space-4);
  min-height: 44px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-primary);
}
.faq-question:hover {
  color: var(--color-accent-400);
}
.faq-item--open .faq-question {
  color: var(--color-accent-400);
}

.faq-toggle {
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
  color: var(--color-accent-400);
  transition: transform var(--transition-slow);
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}
.faq-item--open .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item--open .faq-answer {
  max-height: 500px;
  padding-bottom: var(--space-6);
}

.faq-answer-text {
  font-size: var(--text-body-lg);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

/* =====================
   6. Social Proof 바 항목 (다크)
   ===================== */
.proof-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-8) var(--space-8);
  position: relative;
  text-align: center;
}
.proof-item + .proof-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 40px;
  width: 1px;
  background: var(--border-default);
}

.proof-number {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--text-heading-lg);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1;
}

.proof-label {
  display: block;
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--text-muted);
  text-align: center;
  line-height: var(--leading-snug);
}

/* =====================
   7. 별점 표시
   ===================== */
.star-rating {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  color: var(--color-success-600);
}
.star-rating svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* =====================
   8. 체크리스트 항목
   ===================== */
.check-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

.check-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-success-600);
  flex-shrink: 0;
  margin-top: 2px;
}

/* =====================
   9. 모달 — 공통 베이스
   ===================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-box {
  background: var(--color-dark-700);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(24px) scale(0.97);
  transition: transform var(--transition-slow);
  /* 스크롤바 다크 */
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.modal-overlay.is-open .modal-box {
  transform: translateY(0) scale(1);
}
.modal-box::-webkit-scrollbar {
  width: 6px;
}
.modal-box::-webkit-scrollbar-track {
  background: transparent;
}
.modal-box::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

.modal-box--lg {
  max-width: 760px;
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-8) var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--border-default);
  gap: var(--space-4);
}

.modal__title {
  font-size: var(--text-heading-md);
  font-weight: 700;
  color: var(--text-heading);
  line-height: var(--leading-snug);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-base);
  flex-shrink: 0;
  font-size: 1.25rem;
  line-height: 1;
}
.modal__close:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-heading);
  border-color: var(--border-strong);
}

.modal__body {
  padding: var(--space-8);
}

/* =====================
   10. 문의 폼 모달
   ===================== */
.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: #D1D5DB;
}
.form-label--required::after {
  content: ' *';
  color: #EF4444;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-heading);
  font-family: var(--font-primary);
  font-size: var(--text-body-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  appearance: none;
  -webkit-appearance: none;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-placeholder);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-400);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%236B7280' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 40px;
  cursor: pointer;
}

/* select option 스타일 (일부 브라우저 제한됨) */
.form-select option {
  background: var(--color-dark-700);
  color: var(--text-heading);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: var(--leading-normal);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-submit {
  margin-top: var(--space-2);
  width: 100%;
  padding: 14px;
  font-size: var(--text-body-lg);
  background: var(--color-accent-500);
  color: var(--color-white);
  border-color: var(--color-accent-500);
}
.form-submit:hover {
  background: var(--color-accent-600);
  border-color: var(--color-accent-600);
  color: var(--color-white);
}

.form-notice {
  font-size: var(--text-body-xs);
  color: var(--text-placeholder);
  text-align: center;
  margin-top: var(--space-2);
}

/* 폼 상태 메시지 */
.form-status {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-body-sm);
  font-weight: 500;
  display: none;
  margin-bottom: var(--space-4);
}
.form-status--success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  color: #22C55E;
  border: 1px solid rgba(34, 197, 94, 0.2);
}
.form-status--error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: #EF4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ─── 파일 첨부 드롭존 ─── */
.form-label__opt {
  font-weight: 400;
  color: var(--text-placeholder);
  font-size: var(--text-body-xs);
}

.file-dropzone {
  border: 2px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  padding: 28px var(--space-4) 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  outline: none;
}
.file-dropzone:hover,
.file-dropzone:focus-visible,
.file-dropzone--dragover {
  border-color: var(--color-accent-400);
  background: var(--color-accent-50);
}
.file-dropzone--dragover {
  border-style: solid;
}

.file-dropzone__icon {
  width: 36px;
  height: 36px;
  margin: 0 auto 10px;
  color: var(--text-placeholder);
  transition: color 0.2s ease, transform 0.2s ease;
  display: block;
}
.file-dropzone:hover .file-dropzone__icon,
.file-dropzone:focus-visible .file-dropzone__icon,
.file-dropzone--dragover .file-dropzone__icon {
  color: var(--color-accent-400);
  transform: translateY(-3px);
}

.file-dropzone__title {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--text-body);
  margin: 0 0 4px;
}
.file-dropzone__sub {
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  margin: 0 0 8px;
}
.file-dropzone__sub span {
  color: var(--color-accent-400);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.file-dropzone__hint {
  font-size: var(--text-body-xs);
  color: var(--text-placeholder);
  margin: 0;
}
.file-dropzone__input {
  display: none;
}

/* 선택된 파일 목록 */
.file-list {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.file-list__item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: var(--text-body-xs);
  color: var(--text-body);
}
.file-list__item-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: var(--color-accent-400);
}
.file-list__item-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-list__item-size {
  color: var(--text-placeholder);
  flex-shrink: 0;
}
.file-list__item-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-placeholder);
  padding: 0 2px;
  line-height: 1;
  font-size: 16px;
  flex-shrink: 0;
  transition: color 0.15s;
}
.file-list__item-remove:hover {
  color: #EF4444;
}

/* =====================
   11. 서비스 상세 모달
   ===================== */
.service-modal__badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.service-modal__desc {
  font-size: var(--text-body-lg);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.service-modal__section-title {
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-accent-400);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  font-family: var(--font-accent);
  margin-bottom: var(--space-4);
}

.service-modal__features {
  margin-bottom: var(--space-8);
}

.service-modal__packages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.service-modal__package {
  background: var(--color-dark-800);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
}
.service-modal__package--highlight {
  border-color: var(--color-accent-500);
  background: rgba(6, 182, 212, 0.08);
}

.service-modal__package-name {
  font-size: var(--text-body-xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-2);
}

.service-modal__package-price {
  font-family: var(--font-accent);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1;
}

.service-modal__footer {
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.service-modal__footer-desc {
  font-size: var(--text-body-sm);
  color: var(--text-muted);
  flex: 1;
  min-width: 200px;
}