/* ===== 서류 준비 허브 — Design Tokens ===== */
:root {
  --color-primary: #425b51;
  --color-primary-light: #5a7a6d;
  --color-primary-dark: #2c3e30;
  --color-bg: #f8f9fa;
  --color-white: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #666666;
  --color-border: #e2e8f0;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-info: #2563eb;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Header ===== */
.hub-header {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.hub-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.hub-logo {
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: -0.5px;
}

.hub-nav { display: flex; gap: 4px; }

.hub-nav-link {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.hub-nav-link:hover { color: var(--color-white); background: rgba(255,255,255,0.1); }
.hub-nav-link.active { color: var(--color-white); background: rgba(255,255,255,0.2); }

/* ===== Main ===== */
.hub-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  min-height: calc(100vh - 56px - 60px);
}

/* ===== Footer ===== */
.hub-footer {
  text-align: center;
  padding: 16px;
  color: var(--color-text-secondary);
  font-size: 13px;
  border-top: 1px solid var(--color-border);
}

/* ===== Cards ===== */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.card + .card { margin-top: 16px; }

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}

/* ===== Grid ===== */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

/* ===== Stats ===== */
.stat-card {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 16px;
  text-align: center;
}

.stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* ===== Progress Bar ===== */
.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin: 8px 0;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-text {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ===== Application Card ===== */
.app-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s;
}

.app-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.app-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.app-card-title { font-size: 15px; font-weight: 600; }
.app-card-agency { font-size: 13px; color: var(--color-text-secondary); }

.app-card-deadline {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  background: #fef3c7;
  color: #92400e;
  white-space: nowrap;
}

.app-card-deadline.urgent { background: #fee2e2; color: #991b1b; }

/* ===== Checklist ===== */
.checklist-group { margin-bottom: 24px; }

.checklist-group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-border);
}

.checklist-item {
  display: flex;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #f1f5f9;
  gap: 12px;
}

.checklist-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
}

.checklist-check.done {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.checklist-check.missing {
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.checklist-name { flex: 1; font-size: 14px; }

.checklist-action {
  font-size: 13px;
  color: var(--color-info);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.checklist-action:hover { text-decoration: underline; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover { background: #f1f5f9; }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover { background: var(--color-primary-dark); }

.btn-sm { padding: 4px 12px; font-size: 13px; }

/* ===== Section ===== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

/* ===== File Item ===== */
.file-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.file-item + .file-item { margin-top: 8px; }

.file-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: #e0f2fe;
  color: var(--color-info);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.file-info { flex: 1; }
.file-name { font-size: 14px; font-weight: 500; }
.file-meta { font-size: 12px; color: var(--color-text-secondary); }

.file-status {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}

.file-status.valid { background: #dcfce7; color: #166534; }
.file-status.expired { background: #fee2e2; color: #991b1b; }
.file-status.soon { background: #fef3c7; color: #92400e; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-secondary);
}

.empty-state-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.5; }
.empty-state-text { font-size: 15px; }

/* ===== Modal ===== */
.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--shadow-md);
}

.modal-content h2 { margin-bottom: 8px; }
.modal-content p { color: var(--color-text-secondary); margin-bottom: 16px; font-size: 14px; }

.modal-content input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 12px;
}

.modal-content input:focus { outline: none; border-color: var(--color-primary); }

/* ===== Loading ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--color-text-secondary);
}

.spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hub-header-inner { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
  .hub-nav { width: 100%; justify-content: center; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hub-main { padding: 16px; }
}