:root {
    --bg-color: #0f1115;
    --card-bg: #1a1d24;
    --modal-bg: #1a1d24;
    --text-main: #f1f5f9;
    --text-sub: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --border-color: #2a2e37;
    --danger: #ef4444;
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --modal-bg: #ffffff;
    --text-main: #0f172a;
    --text-sub: #64748b;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --border-color: #e2e8f0;
    --danger: #dc2626;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; outline: none !important; -webkit-tap-highlight-color: transparent; }
body { background-color: var(--bg-color); color: var(--text-main); overflow-x: hidden; transition: background-color 0.3s; }
.screen { min-height: 100vh; width: 100vw; position: absolute; top: 0; left: 0; display: flex; flex-direction: column; }

/* REUSABLE */
.content-container { max-width: 800px; margin: 0 auto; width: 100%; padding: 0 20px; }
.icon-btn { cursor: pointer; color: var(--text-sub); font-size: 24px; transition: color 0.2s, transform 0.1s; }
.icon-btn:hover { color: var(--text-main); }
.icon-btn:active { transform: scale(0.9); }
.primary-btn { width: 100%; padding: 14px; border-radius: 10px; border: none; background: var(--accent); color: #fff; font-size: 16px; font-weight: 600; cursor: pointer; transition: background 0.2s; margin-bottom: 10px; }
.primary-btn:hover { background: var(--accent-hover); }
.secondary-btn { width: 100%; background: transparent; color: var(--text-sub); border: none; padding: 10px; cursor: pointer; font-size: 15px; font-weight: 500; transition: color 0.2s; }
.secondary-btn:hover { color: var(--text-main); }
.danger-btn { background: var(--danger); color: white; }
.danger-btn:hover { background: #dc2626; }
.divider { border: 0; border-top: 1px solid var(--border-color); margin: 20px 0; }

/* TOASTS */
#toast-container { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 10px; z-index: 9999; pointer-events: none; }
.toast { background: var(--card-bg); color: var(--text-main); padding: 14px 24px; border-radius: 30px; box-shadow: 0 8px 20px rgba(0,0,0,0.3); border: 1px solid var(--border-color); font-size: 14px; font-weight: 500; opacity: 0; transform: translateY(20px); animation: toastEnter 0.3s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; }
@keyframes toastEnter { to { opacity: 1; transform: translateY(0); } }
.toast.hide { animation: toastLeave 0.3s ease-in forwards; }
@keyframes toastLeave { to { opacity: 0; transform: translateY(20px); } }

/* AUTH */
.auth-box { max-width: 380px; margin: 10vh auto; padding: 30px 20px; text-align: center; background: var(--card-bg); border-radius: 16px; border: 1px solid var(--border-color); box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.auth-box h1 { margin-bottom: 30px; font-weight: 700; font-size: 28px; }
.auth-box p { margin-bottom: 15px; color: var(--text-sub); font-size: 15px;}
input[type="text"], input[type="password"] { width: 100%; padding: 14px 16px; margin-bottom: 20px; border-radius: 10px; border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-main); font-size: 16px; }
input[type="text"]:focus, input[type="password"]:focus { border-color: var(--accent); }

/* HEADER & MAIN */
.main-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; height: 75px; max-width: 800px; margin: 0 auto; width: 100%; }
.header-right { display: flex; gap: 20px; align-items: center; }
main { padding-bottom: 100px; }
.main-title { font-size: 32px; font-weight: 700; margin-bottom: 4px; letter-spacing: -0.5px; }
.subtitle { color: var(--text-sub); font-size: 14px; margin-bottom: 25px; }

/* SEARCH */
#search-container { flex-grow: 1; display: flex; align-items: center; margin: 0 15px; background: var(--card-bg); border-radius: 12px; padding: 8px 15px; border: 1px solid var(--border-color); }
.search-icon { color: var(--text-sub); font-size: 18px; margin-right: 10px; flex-shrink: 0;}
#search-input { border-radius: 0; margin: 0; border: none; background: transparent; color: var(--text-main); width: 100%; font-size: 16px; padding: 0; box-shadow: none; min-width: 0; }
.close-search { font-size: 20px; color: var(--text-sub); margin-left: 10px; flex-shrink: 0; }

/* NOTE CARDS */
.group-title { color: var(--text-sub); font-size: 13px; margin: 30px 0 10px 0; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.note-card { background: var(--card-bg); border-radius: 14px; padding: 16px 20px; margin-bottom: 12px; position: relative; cursor: pointer; border: 1px solid var(--border-color); transition: transform 0.2s, border-color 0.2s; }
.note-card:hover { transform: translateY(-2px); border-color: var(--text-sub); }
.note-card::before { content: ''; position: absolute; left: 16px; top: 22px; height: 14px; width: 4px; background: var(--note-color, var(--accent)); border-radius: 4px; }
.note-title { font-size: 17px; font-weight: 600; margin-left: 16px; margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-main); }
.note-snippet { color: var(--text-sub); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* FAB */
.fab-container { position: fixed; bottom: 30px; width: 100%; display: flex; justify-content: center; pointer-events: none; z-index: 40; }
.fab { width: 60px; height: 60px; border-radius: 50%; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 28px; border: none; pointer-events: auto; cursor: pointer; box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4); transition: transform 0.2s, background 0.2s; }
.fab:hover { transform: scale(1.05); background: var(--accent-hover); }

/* DRAWER */
.drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100vh; background: var(--card-bg); z-index: 1000; transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1); border-right: 1px solid var(--border-color); display: flex; flex-direction: column; }
.drawer.open { left: 0; }
.drawer-header { display: flex; justify-content: space-between; padding: 25px 25px 15px 25px; }
.drawer-content { padding: 10px 25px; flex-grow: 1; overflow-y: auto; }
.drawer-title { color: var(--text-sub); display: flex; justify-content: space-between; font-size: 13px; font-weight: 600; text-transform: uppercase; margin-bottom: 15px; letter-spacing: 0.5px; align-items: center; }
.edit-btn { color: var(--accent); cursor: pointer; text-transform: none; font-weight: 500; font-size: 14px; padding: 4px 8px; border-radius: 6px; }
.edit-btn.active { background: rgba(99,102,241,0.2); }
#folder-list { list-style: none; }
#folder-list li { padding: 10px 12px; font-size: 15px; cursor: pointer; display: flex; align-items: center; color: var(--text-main); border-radius: 8px; margin-bottom: 4px; transition: background 0.2s; position: relative;}
#folder-list li:hover { background: var(--bg-color); }
#folder-list li.active { background: var(--bg-color); font-weight: 600; }
.color-bar { width: 4px; height: 16px; border-radius: 4px; margin-right: 12px; flex-shrink: 0;}
.default-color { background: var(--text-sub); }
.new-folder-btn { margin-top: 15px; color: var(--accent); cursor: pointer; font-weight: 500; font-size: 15px; display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 8px; transition: background 0.2s; }
.new-folder-btn:hover { background: var(--bg-color); }
.drawer-footer { padding: 25px; color: var(--danger); cursor: pointer; font-weight: 600; border-top: 1px solid var(--border-color); display: flex; align-items: center; gap: 10px; transition: background 0.2s;}
.drawer-footer:hover { background: rgba(239, 68, 68, 0.1); }
#drawer-overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.5); backdrop-filter: blur(2px); z-index: 999; display: none; }
#drawer-overlay.open { display: block; }

/* EDITOR */
#editor-screen { background: var(--bg-color); z-index: 50; }
.editor-header { padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; max-width: 800px; margin: 0 auto; width: 100%; border-bottom: 1px solid transparent;}
.editor-actions { display: flex; align-items: center; gap: 20px; }

/* MUTED ICONS */
.save-btn { color: #818cf8; font-size: 26px; } /* Muted Indigo */
.save-btn:hover { color: #6366f1; }
.delete-btn { color: #f87171; display: none; } /* Muted Red */
.delete-btn:hover { color: #ef4444; }

.editor-content { padding-top: 10px; display: flex; flex-direction: column; flex-grow: 1; }
#note-title { font-size: 32px; font-weight: 800; margin-bottom: 5px; background: transparent; border: none; padding: 0; color: var(--text-main); box-shadow: none; letter-spacing: -0.5px; }

/* EDITOR META INFO */
.editor-meta { display: flex; align-items: center; gap: 15px; margin-bottom: 25px; color: var(--text-sub); font-size: 14px; font-weight: 500; }
.meta-item { position: relative; display: inline-flex; align-items: center; cursor: pointer; transition: color 0.2s; }
.meta-item:hover { color: var(--text-main); }
#note-date, #note-folder-select { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; padding: 0; margin: 0; border: none; }
#note-folder-select option { color: var(--text-main); background: var(--card-bg); font-weight: normal;}

#note-body { flex-grow: 1; background: transparent; color: var(--text-main); border: none; resize: none; font-size: 17px; line-height: 1.7; padding-bottom: 50px; }
#note-title::placeholder, #note-body::placeholder { color: var(--text-sub); }

/* MODALS */
.modal { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.modal-content { background: var(--modal-bg); padding: 30px; border-radius: 20px; width: 90%; max-width: 380px; text-align: center; border: 1px solid var(--border-color); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
.modal-content h3 { margin-bottom: 10px; font-weight: 700; font-size: 22px; }
.modal-desc { color: var(--text-sub); font-size: 14px; margin-bottom: 25px; }

/* SETTINGS MODAL */
.settings-content { text-align: left; }
.settings-section { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; font-weight: 500; }
.settings-section-col { display: flex; flex-direction: column; gap: 10px; font-weight: 500; }
.theme-toggle-btn { background: var(--card-bg); border: 1px solid var(--border-color); color: var(--text-main); padding: 6px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 500;}

/* COLOR PICKER BUBBLES */
.color-picker { display: flex; gap: 12px; justify-content: flex-start; flex-wrap: wrap; margin-bottom: 20px; }
.color-swatch { width: 30px; height: 30px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; transition: transform 0.2s; flex-shrink: 0; }
.color-swatch.selected { transform: scale(1.2); border-color: var(--text-main); }