:root{--btn-primary-bg: #646cff;--btn-primary-text: white;--btn-danger-bg: #ff5555;--btn-danger-text: white;--warning-bg: #8a6a00;--badge-bg: #555;--badge-text: #ddd;--danger-bg: #ff5555;--success-text: #10b981;--code-bg: #000;--sidebar-bg: #161616;--panel-bg: #080808}body{--bg-color: #0c0c0c;--text-color: #e2e8f0;--container-bg: #141414;--border-color: #222;--modal-bg: #1a1a1a;--input-bg: #111;--btn-secondary-bg: #333;--btn-secondary-text: white;--btn-secondary-hover-bg: #444;background:var(--bg-color);color:var(--text-color);font-family:system-ui,sans-serif;margin:0;padding:0;transition:background .3s ease,color .3s ease}body.light{--bg-color: #f0f4f8;--text-color: #1a202c;--container-bg: #ffffff;--border-color: #cbd5e1;--modal-bg: #f8fafc;--input-bg: #ffffff;--btn-secondary-bg: #e2e8f0;--btn-secondary-text: #1e293b;--btn-secondary-hover-bg: #cbd5e1}.btn{padding:10px 15px;border-radius:6px;border:none;font-weight:700;cursor:pointer;transition:.2s}.btn.primary{background:var(--btn-primary-bg);color:var(--btn-primary-text)}.btn.secondary{background:var(--btn-secondary-bg);color:var(--btn-secondary-text)}.btn.secondary:hover{background:var(--btn-secondary-hover-bg)}.btn.danger{background:var(--btn-danger-bg);color:var(--btn-danger-text)}.header.svelte-1f6ciw2.svelte-1f6ciw2{transition:all .3s ease;overflow:hidden;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #232323;padding-bottom:15px;margin-bottom:20px}.header.collapsed.svelte-1f6ciw2.svelte-1f6ciw2{padding-bottom:5px;margin-bottom:10px;border-bottom:1px solid var(--border-color)}.header.collapsed.svelte-1f6ciw2 h1.svelte-1f6ciw2{font-size:1.1rem;color:var(--text-color);margin:0}.header-title-area.svelte-1f6ciw2 h1.svelte-1f6ciw2{margin:0;font-size:1.5rem;display:flex;align-items:center}.header-actions.svelte-1f6ciw2.svelte-1f6ciw2{display:flex;align-items:center;gap:15px}.view-tabs.svelte-1f6ciw2.svelte-1f6ciw2{display:flex;gap:8px;margin-bottom:20px;border-bottom:1px solid var(--border-color);padding-bottom:12px}.view-tabs.svelte-1f6ciw2 button.svelte-1f6ciw2{background:none;border:none;color:#777;padding:8px 16px;cursor:pointer;font-weight:600}.view-tabs.svelte-1f6ciw2 button.active.svelte-1f6ciw2{background:var(--border-color);color:var(--text-color);border-radius:4px}.logout-btn.svelte-1f6ciw2.svelte-1f6ciw2{background:var(--btn-secondary-bg);color:#ccc;border:none;padding:8px 14px;border-radius:6px;cursor:pointer;font-weight:700}.theme-toggle.svelte-1f6ciw2.svelte-1f6ciw2{margin-right:auto;margin-left:20px}.yin-yang-btn.svelte-1f6ciw2.svelte-1f6ciw2{background:none;border:none;font-size:1.5rem;cursor:pointer;transition:transform .3s ease;color:var(--text-color, #fff)}.yin-yang-btn.svelte-1f6ciw2.svelte-1f6ciw2:hover{transform:rotate(180deg)}.modal-overlay.svelte-19c4n84.svelte-19c4n84{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000c;display:flex;align-items:center;justify-content:center;z-index:200;overflow-y:auto}.modal.svelte-19c4n84.svelte-19c4n84{background:var(--modal-bg);padding:25px;border-radius:8px;width:400px;border:1px solid var(--border-color);margin:auto;transition:background .3s ease}h2.svelte-19c4n84.svelte-19c4n84{margin-top:0;color:var(--text-color, #ddd);font-size:1.5rem;margin-bottom:20px}.topic-input.svelte-19c4n84.svelte-19c4n84{display:flex;gap:10px;margin-bottom:20px}.topic-input.svelte-19c4n84 input[type=text].svelte-19c4n84{flex:1;padding:10px;background:var(--input-bg);border:1px solid var(--border-color);color:var(--text-color);border-radius:4px}.topic-input.svelte-19c4n84 input[type=color].svelte-19c4n84{width:50px;height:100%;cursor:pointer;border:none;background:none;padding:0}.modal-actions.svelte-19c4n84.svelte-19c4n84{display:flex;justify-content:flex-end;gap:10px}.modal-overlay.svelte-x7nxwo.svelte-x7nxwo{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#000c;display:flex;align-items:center;justify-content:center;z-index:100;overflow-y:auto}.modal.svelte-x7nxwo.svelte-x7nxwo{background:var(--modal-bg);padding:25px;border-radius:8px;width:450px;border:1px solid var(--border-color);margin:auto;transition:background .3s ease}.study-launch-banner.svelte-x7nxwo.svelte-x7nxwo{background:var(--input-bg);padding:15px;border-radius:6px;margin:20px 0;border:1px solid #2a2a5a;text-align:center}.modal-actions.svelte-x7nxwo.svelte-x7nxwo{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.full-width.svelte-x7nxwo.svelte-x7nxwo{width:100%;box-sizing:border-box}.modal-section.svelte-x7nxwo.svelte-x7nxwo{background:var(--input-bg);padding:12px;border-radius:6px;border:1px solid var(--border-color);margin-top:10px;transition:background .3s ease}.section-toggle.svelte-x7nxwo.svelte-x7nxwo{width:100%;display:flex;justify-content:space-between;align-items:center;background:transparent;border:none;color:var(--text-color);font-size:.9rem;font-weight:700;padding:0;cursor:pointer}.section-content.svelte-x7nxwo.svelte-x7nxwo{margin-top:10px;border-top:1px solid var(--border-color);padding-top:10px;display:flex;flex-direction:column;gap:10px}.chevron.svelte-x7nxwo.svelte-x7nxwo{font-size:.8rem;color:#666}.dep-list.svelte-x7nxwo.svelte-x7nxwo{display:flex;flex-wrap:wrap;gap:8px}.dep-badge.svelte-x7nxwo.svelte-x7nxwo{background:var(--btn-secondary-bg);border:1px solid #555;padding:5px 10px;border-radius:6px;font-size:.85rem;display:flex;align-items:center;gap:8px;color:var(--text-color)}.shared-badge.svelte-x7nxwo.svelte-x7nxwo{background:#1b4332;border-color:#2d6a4f}.remove-dep.svelte-x7nxwo.svelte-x7nxwo{background:transparent;border:none;color:#f55;cursor:pointer;font-weight:700;padding:0 4px;font-size:1rem}.add-dep.svelte-x7nxwo.svelte-x7nxwo{display:flex;gap:8px}.reminder-box.svelte-x7nxwo.svelte-x7nxwo{display:flex;align-items:center;background:var(--input-bg);padding:10px 15px;border-radius:6px;border-left:3px solid #f1c40f;margin-bottom:15px}.reminder-box.svelte-x7nxwo label.svelte-x7nxwo{font-size:.9rem;margin-right:10px;color:var(--text-color)}main.svelte-68li5i{padding:20px;display:flex;flex-direction:column;align-items:center;min-height:100vh;box-sizing:border-box}.container.svelte-68li5i{width:100%;max-width:900px;background:var(--container-bg);padding:25px;border-radius:10px;border:1px solid var(--border-color);position:relative;transition:background .3s ease}.study-expanded.svelte-68li5i{max-width:1500px;height:95vh;display:flex;flex-direction:column;overflow:hidden}.version-info.svelte-68li5i{text-align:center;font-size:.7rem;color:var(--text-color);opacity:.5;margin-top:auto}.login-box.svelte-68li5i{text-align:center;padding:40px;background:var(--modal-bg);border:1px solid var(--border-color);border-radius:8px;margin-top:20px}.google-btn.svelte-68li5i{display:inline-block;background:var(--btn-primary-bg);color:var(--text-color);text-decoration:none;padding:10px 20px;border-radius:4px;font-weight:500;margin-top:15px}