/* ============================================================
   GCFL Design System — 3. COMPONENTS
   Shared interactive components: buttons, inputs, filters,
   badges, modals, tables, alerts. No !important on layout.
   Load order: AFTER theme-layout.css
   ============================================================ */

/* ── Universal Button System (3-Tier Hierarchy + Sizing) ──────── */
.button, button.button, .btn,
.btn-primary, .btn-secondary, .btn-details, .btn-copy, .btn-modify, .btn-download, .btn-submit,
.actions a, .actions button,
.exam-actions a, .exam-actions button,
.doc-actions a, .doc-actions button,
.detail-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  min-height: 38px;
  padding: 0 16px;
  border-radius: var(--ds-r-sm, 6px);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  box-sizing: border-box;
  white-space: nowrap;
  transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
}

.button:active, button.button:active,
.actions a:active, .actions button:active,
.exam-actions a:active, .exam-actions button:active {
  transform: scale(0.98);
}

/* 1. Primary Button (1순위 - 주요 실행/제출/다운로드/인증) */
.button.primary, button.button.primary,
.btn-primary, .btn-submit,
button[type="submit"]:not(.secondary):not(.danger),
.mode-tab.active {
  background: var(--ds-accent);
  border-color: var(--ds-accent);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--ds-accent-glow);
}

.button.primary:hover, button.button.primary:hover,
.btn-primary:hover, .btn-submit:hover,
button[type="submit"]:not(.secondary):not(.danger):hover {
  background: var(--ds-accent-hover);
  border-color: var(--ds-accent-hover);
  box-shadow: 0 4px 14px var(--ds-accent-glow);
  transform: translateY(-1px);
}

/* 2. Secondary Button (2순위 - 서브 액션/답지/복사/공유) */
.button.secondary, button.button.secondary,
.btn-secondary, .btn-copy,
.button-secondary {
  background: rgba(63, 208, 201, 0.10);
  color: var(--ds-cyan);
  border-color: rgba(63, 208, 201, 0.30);
}

.button.secondary:hover, button.button.secondary:hover,
.btn-secondary:hover, .btn-copy:hover {
  background: rgba(63, 208, 201, 0.20);
  border-color: var(--ds-cyan);
  color: var(--ds-cyan);
  transform: translateY(-1px);
}

/* 3. Trinary / Tertiary Button (3순위 - 상세/세부정보/취소/닫기/수정/일반) */
.button, button.button,
.button.tertiary, button.button.tertiary,
.btn-details, .btn-modify, .detail-button,
.actions a:not(.primary):not(.secondary):not(.danger),
.actions button:not(.primary):not(.secondary):not(.danger),
.modal-card button#closeModal,
.modal-card button.modal_close,
.modal-card button:not(.primary):not(.secondary):not(.danger) {
  background: var(--ds-surface-raised);
  color: var(--ds-text);
  border-color: var(--ds-border);
}

.button:hover, button.button:hover,
.button.tertiary:hover, button.button.tertiary:hover,
.btn-details:hover, .btn-modify:hover, .detail-button:hover,
.actions a:not(.primary):not(.secondary):not(.danger):hover,
.actions button:not(.primary):not(.secondary):not(.danger):hover,
.modal-card button#closeModal:hover,
.modal-card button.modal_close:hover,
.modal-card button:not(.primary):not(.secondary):not(.danger):hover {
  background: var(--ds-accent-glow);
  border-color: var(--ds-accent);
  color: var(--ds-accent);
  transform: translateY(-1px);
}

/* 4. Danger Button (삭제/로그아웃/위험) */
.button.danger, button.button.danger,
.btn-danger, .logout-button {
  background: rgba(255, 107, 107, 0.10);
  color: var(--ds-danger);
  border-color: rgba(255, 107, 107, 0.30);
}

.button.danger:hover, button.button.danger:hover,
.btn-danger:hover, .logout-button:hover {
  background: rgba(255, 107, 107, 0.22);
  border-color: var(--ds-danger);
  color: var(--ds-danger);
  transform: translateY(-1px);
}

/* ── Sibling & Grouped Buttons Alignment ─────────────────────── */
.actions,
.button-row,
.btn-action-group,
.doc-actions,
.exam-actions,
.guest-actions,
.login-actions,
.modal-card .actions {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.actions > *,
.button-row > *,
.btn-action-group > * {
  flex: 1 1 0;
  min-width: 0;
}

.exam-actions > *,
.doc-actions > * {
  flex: 1 1 auto;
}

/* ── Inputs / Selects / Textareas ───────────────────────────── */
input:not([type="checkbox"]):not([type="radio"]),
select,
textarea {
  background: var(--ds-surface);
  border-color: var(--ds-border);
  color: var(--ds-text);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--ds-accent);
  box-shadow: 0 0 0 3px var(--ds-accent-glow);
  background: var(--ds-surface);
}

.toolbar input {
  background: var(--ds-surface);
  border-color: var(--ds-border);
  color: var(--ds-text);
}

.toolbar input:focus {
  border-color: var(--ds-accent);
  box-shadow: 0 0 0 3px var(--ds-accent-glow);
}

/* ── Code input (guest-access, verify) ─────────────────────── */
.code-input {
  background: var(--ds-surface);
  border-color: var(--ds-accent);
  color: var(--ds-text);
}

.code-input:focus {
  box-shadow: 0 0 0 3px var(--ds-accent-glow);
}

/* ── Filter panel & rows ─────────────────────────────────────── */
.filter-panel {
  background: var(--ds-surface);
  border-color: var(--ds-border);
}

.filter-row {
  border-bottom-color: var(--ds-border);
}

.filter-row-title { color: var(--ds-text); font-weight: 700; }

/* ── Filter & category buttons (filter-opt, filter-btn, cat-tab) */
.filter-opt, .filter-btn, .cat-tab {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-muted);
  transition: all 0.18s cubic-bezier(0.4,0,0.2,1);
}

.filter-opt:hover, .filter-btn:hover, .cat-tab:hover {
  background: var(--ds-accent-glow);
  border-color: var(--ds-accent);
  color: var(--ds-text);
  transform: translateY(-1px);
}

.filter-opt.active, .filter-btn.active, .cat-tab.active {
  background: var(--ds-accent);
  border-color: var(--ds-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--ds-accent-glow);
}

.filter-opt:not(.active), .filter-btn:not(.active), .cat-tab:not(.active) {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-muted);
  box-shadow: none;
}

.filter-reset-btn {
  background: transparent;
  border-color: var(--ds-border);
  color: var(--ds-muted);
}

.filter-reset-btn:hover {
  border-color: var(--ds-text);
  color: var(--ds-text);
}

/* ── Badge / Tag ─────────────────────────────────────────────── */
.badge {
  background: var(--ds-accent-glow);
  color: var(--ds-accent);
  border-color: rgba(139,92,246,0.25);
}

.tag {
  background: rgba(63,208,201,0.12);
  color: var(--ds-cyan);
  border-color: rgba(63,208,201,0.25);
}

.category-badge {
  background: var(--ds-accent-glow);
  color: var(--ds-accent);
  border-color: rgba(139,92,246,0.20);
}

/* ── Status boxes ───────────────────────────────────────────── */
.status {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-muted);
}

/* ── Alert / notice cards ───────────────────────────────────── */
.rules-card, .info-card, .notice-card, .alert-box {
  background: rgba(139,92,246,0.07);
  border-color: rgba(139,92,246,0.22);
  color: var(--ds-text);
}

.rules-card li, .info-card li, .notice-card li {
  color: var(--ds-muted);
}

.rules-card strong, .info-card strong, .notice-card strong {
  color: var(--ds-text);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .rules-card,
  :root:not([data-theme="dark"]) .info-card,
  :root:not([data-theme="dark"]) .notice-card {
    background: #f5f3ff;
    border-color: #c4b5fd;
  }
  :root:not([data-theme="dark"]) .rules-card li,
  :root:not([data-theme="dark"]) .info-card li,
  :root:not([data-theme="dark"]) .notice-card li {
    color: #4c1d95;
  }
}
[data-theme="light"] .rules-card,
[data-theme="light"] .info-card,
[data-theme="light"] .notice-card {
  background: #f5f3ff;
  border-color: #c4b5fd;
}

/* ── Tables ──────────────────────────────────────────────────── */
table { border-collapse: collapse; width: 100%; }
th, td { color: var(--ds-text); border-bottom: 1px solid var(--ds-border); }
th { background: var(--ds-surface-raised); color: var(--ds-muted); }
tr:hover td { background: var(--ds-surface-raised); }
td.empty { color: var(--ds-muted); }

/* Timetable exception (uses its own collapse) */
#timetable { border-collapse: collapse; }
#timetable th, #timetable td { border: 1px solid var(--ds-border); }

/* ── Log table ───────────────────────────────────────────────── */
.log-table-box {
  background: var(--ds-surface);
  border-color: var(--ds-border);
}

/* ── Upload drop zone ───────────────────────────────────────── */
.upload-drop {
  border-color: rgba(139,92,246,0.35);
  background: rgba(139,92,246,0.05);
}

.upload-drop.dragover {
  border-color: var(--ds-cyan);
  background: rgba(63,208,201,0.08);
}

/* ── Score / form input groups ──────────────────────────────── */
.score-item {
  background: var(--ds-surface);
  border-color: var(--ds-border);
}

.form-input-group input,
.form-input-group select {
  background: var(--ds-surface);
  border-color: var(--ds-border);
  color: var(--ds-text);
}

/* ── Consent boxes ─────────────────────────────────────────── */
.consent-summary {
  background: var(--ds-accent-glow);
  border-color: rgba(139,92,246,0.20);
  color: var(--ds-text);
}

.consent-check.optional {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
}

/* ── Soft notice ─────────────────────────────────────────────── */
.soft-notice-host {
  background: rgba(255,107,107,0.08);
  border-color: rgba(255,107,107,0.20);
  color: var(--ds-danger);
}

/* ── Header hero badge ──────────────────────────────────────── */
header .badge {
  align-self: center;
}

/* ── doc-meta, muted notes ─────────────────────────────────── */
.doc-meta, .muted.notes, .modal-card .muted {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-muted);
}

/* ── Detail / action buttons ─────────────────────────────────── */
.detail-button {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-text);
}

.detail-button:active { background: var(--ds-surface); }

.exam-actions a, .exam-actions button {
  background: var(--ds-surface-raised);
  border-color: var(--ds-border);
  color: var(--ds-text);
}

/* ── Exam tags ───────────────────────────────────────────────── */
.exam-tag.tag-year    { background: rgba(63,208,201,0.10); color: var(--ds-cyan); border-color: rgba(63,208,201,0.22); }
.exam-tag.tag-month   { background: rgba(139,92,246,0.10); color: var(--ds-accent); border-color: rgba(139,92,246,0.22); }
.exam-tag.tag-subject { background: rgba(234,88,12,0.10); color: #ea580c; border-color: rgba(234,88,12,0.22); }
.exam-tag.tag-dept    { background: rgba(16,185,129,0.10); color: #34d399; border-color: rgba(16,185,129,0.22); }

/* ── Exam / doc title text ──────────────────────────────────── */
.exam-title, .doc-title, .doc-title-link { color: var(--ds-text); }
.doc-title-link:hover { color: var(--ds-cyan); }
.views-tag { color: var(--ds-muted); }

/* ── Mobile nav hamburger & dropdown ────────────────────────── */
.nav-hamburger-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--ds-surface-raised);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-md);
  color: var(--ds-text);
  font-size: 1.4rem;
  cursor: pointer;
  transition: background 0.18s ease;
}
.nav-hamburger-btn:hover { background: var(--ds-accent-glow); }

.nav-mobile-dropdown {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background: var(--ds-surface);
  backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid var(--ds-border);
  display: flex;
  flex-direction: column;
  padding: 16px 16px 28px;
  gap: 6px;
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.18s ease;
  box-shadow: 0 -16px 40px rgba(0, 0, 0, 0.45);
  max-height: 80vh;
  overflow-y: auto;
}
.nav-mobile-dropdown.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.nav-mobile-dropdown a {
  color: var(--ds-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 16px;
  border-radius: var(--ds-r-md);
  transition: background 0.15s ease, color 0.15s ease;
  display: block;
}
.nav-mobile-dropdown a:hover { background: var(--ds-accent-glow); color: var(--ds-accent); }
.nav-mobile-dropdown a.active { background: var(--ds-accent); color: #fff; }

/* ── Common utility classes ─────────────────────────────────── */
.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--ds-r-lg);
  border: 1px solid var(--ds-border);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.82rem;
  color: var(--ds-muted);
}

.lead {
  color: var(--ds-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hidden { display: none !important; }

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--ds-border);
  border-top-color: var(--ds-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Button variants (btn-primary, btn-secondary, btn-copy etc) */
.btn-primary {
  background: var(--ds-accent);
  color: #ffffff;
  border: none;
  border-radius: var(--ds-r-md);
  font-weight: 700;
  padding: 8px 18px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  transition: filter 0.15s ease, transform 0.15s ease;
}
.btn-primary:hover { filter: brightness(1.12); transform: translateY(-1px); }

.btn-secondary {
  background: var(--ds-surface-raised);
  color: var(--ds-text);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-md);
  font-weight: 600;
  padding: 8px 18px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  transition: background 0.15s ease;
}
.btn-secondary:hover { background: var(--ds-accent-glow); border-color: var(--ds-accent); }

.btn-copy, .btn-details, .btn-modify, .btn-download, .btn-submit {
  background: var(--ds-surface-raised);
  color: var(--ds-text);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-r-sm);
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.82rem;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-copy:hover, .btn-details:hover, .btn-modify:hover {
  background: var(--ds-accent-glow);
  border-color: var(--ds-accent);
  color: var(--ds-accent);
}
.btn-download:hover, .btn-submit:hover {
  background: var(--ds-accent);
  color: #fff;
  border-color: var(--ds-accent);
}

/* ── Consent checks and message ─────────────────────────────── */
.consent-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  border-radius: var(--ds-r-md);
  background: var(--ds-surface-raised);
  border: 1px solid var(--ds-border);
  cursor: pointer;
  color: var(--ds-text);
  font-size: 0.95rem;
  line-height: 1.5;
}

.message {
  padding: 10px 14px;
  border-radius: var(--ds-r-md);
  font-size: 0.9rem;
  color: var(--ds-muted);
}
.message.error { color: var(--ds-danger); background: rgba(255,107,107,0.08); }
.message.success { color: var(--ds-success); background: rgba(52,211,153,0.08); }

/* ── Soft notices (grade-calculator) ────────────────────────── */
.soft-notice-inner {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.soft-notice-text { color: var(--ds-danger); font-size: 0.9rem; line-height: 1.5; flex: 1; }
.soft-notice-close {
  background: none;
  border: none;
  color: var(--ds-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0 4px;
  flex-shrink: 0;
}

/* ── Field / form utilities (verify.html, grade-consent) ────── */
.field { display: flex; flex-direction: column; gap: 6px; }
.consent-field { display: flex; flex-direction: column; gap: 10px; }
.consent-form-grid { display: flex; flex-direction: column; gap: 14px; }
.mode-switch {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--ds-border);
  padding-bottom: 12px;
}
.button-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }