:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-surface-alt: #f1f5f9;--color-border: #e2e8f0;--color-border-strong: #cbd5e1;--color-text: #0f172a;--color-text-muted: #64748b;--color-text-subtle: #94a3b8;--color-primary: #1a73e8;--color-primary-hover: #1558b8;--color-danger: #e53935;--color-success: #00c49a;--color-warning: #f59e0b;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow-md: 0 4px 12px rgba(15, 23, 42, .08);--shadow-lg: 0 12px 28px rgba(15, 23, 42, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;padding:0}body{font-family:var(--font-stack);background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}button:disabled{cursor:not-allowed;opacity:.5}input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}.shell{min-height:100%;display:flex;flex-direction:column}.shell-header{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:10}.shell-brand{font-weight:700;font-size:18px;letter-spacing:-.02em}.shell-content{flex:1;padding:32px;max-width:1400px;width:100%;margin:0 auto}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;transition:background .12s ease,color .12s ease,border-color .12s ease;border:1px solid transparent}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border-strong)}.btn-secondary:hover:not(:disabled){background:var(--color-surface-alt)}.btn-ghost{background:transparent;color:var(--color-text-muted)}.btn-ghost:hover:not(:disabled){background:var(--color-surface-alt);color:var(--color-text)}.btn-danger{background:var(--color-surface);color:var(--color-danger);border-color:var(--color-border-strong)}.btn-danger:hover:not(:disabled){background:#fef2f2;border-color:var(--color-danger)}.btn-sm{padding:5px 10px;font-size:13px}.field{display:flex;flex-direction:column;gap:6px}.field-label{font-size:13px;font-weight:600;color:var(--color-text)}.field-hint{font-size:12px;color:var(--color-text-muted)}.input,.textarea,.select{padding:9px 12px;border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:var(--color-surface);outline:none;transition:border-color .12s ease,box-shadow .12s ease}.input:focus,.textarea:focus,.select:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #1a73e82e}.textarea{resize:vertical;min-height:80px;font-family:inherit}.center-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.spinner{width:24px;height:24px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.alert{padding:10px 14px;border-radius:var(--radius-sm);font-size:13px}.alert-error{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}.alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}.alert-warning{background:#fffbeb;color:#92400e;border:1px solid #fde68a}.editor-day-strip{display:flex;gap:8px;padding:12px 0 20px;overflow-x:auto}.editor-day-tab{padding:8px 14px;border-radius:999px;border:1px solid var(--color-border-strong);background:var(--color-surface);font-weight:600;white-space:nowrap;color:var(--color-text-muted)}.editor-day-tab.is-active{background:var(--color-text);color:#fff;border-color:var(--color-text)}.editor-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px}@media (max-width: 960px){.editor-grid{grid-template-columns:1fr}}.day-column{display:flex;flex-direction:column;gap:10px}.day-column-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px}.day-column-title{font-size:18px;font-weight:700;letter-spacing:-.01em}.day-column-date{font-size:13px;color:var(--color-text-muted)}.item-card{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:border-color .12s ease,box-shadow .12s ease}.item-card:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-md)}.item-card.is-dragging{opacity:.4}.item-card-handle{cursor:grab;color:var(--color-text-subtle);padding:2px 4px;user-select:none;font-size:18px;line-height:1}.item-card-handle:active{cursor:grabbing}.item-card-body{flex:1;min-width:0}.item-card-title-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.item-card-title{font-weight:600;font-size:15px}.item-card-meta{display:flex;gap:12px;margin-top:4px;font-size:13px;color:var(--color-text-muted)}.item-card-description{margin-top:6px;font-size:13px;color:var(--color-text);white-space:pre-wrap}.item-card-actions{display:flex;gap:4px}.category-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;color:#fff}.confirmed-pill{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:#d1fae5;color:#065f46}.modal-overlay{position:fixed;inset:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;padding:24px;z-index:100}.modal{background:var(--color-surface);border-radius:var(--radius-lg);width:100%;max-width:560px;max-height:calc(100vh - 48px);overflow-y:auto;box-shadow:var(--shadow-lg)}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid var(--color-border)}.modal-title{font-size:18px;font-weight:700}.modal-body{padding:24px;display:flex;flex-direction:column;gap:16px}.modal-footer{padding:16px 24px;border-top:1px solid var(--color-border);display:flex;gap:8px;justify-content:flex-end}.trip-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.trip-card{display:block;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .12s ease;color:inherit}.trip-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none}.trip-card-cover{height:140px;background:var(--color-surface-alt) center / cover no-repeat}.trip-card-body{padding:14px 16px}.trip-card-title{font-weight:700;font-size:16px;margin-bottom:4px}.trip-card-meta{font-size:13px;color:var(--color-text-muted)}.status-chip{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#fff;margin-top:8px}