:root {
    --accent: #222222;
    --accent-dark: #111111;
    --accent-light: #f4f4f4;
    --bg: #fafbfc;
    --card-bg: #fff;
    --border: #e0e0e0;
    --border-light: #f3f3f3;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow: 0 8px 30px rgba(0,0,0,0.07);
    --shadow-lg: 0 12px 42px rgba(0,0,0,0.13);
    --text: #181818;
    --text-heading: #111111;
    --text-secondary: #444;
    --muted: #888;
    --danger: #222;
    --danger-light: #f8f8f8;
    --success: #222;
    --success-light: #f4f4f4;
    --warning: #222;
    --warning-light: #f4f4f4;
}

body {
    background: var(--bg);
    color: var(--text);
}

body {
    background: var(--bg);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', 'Segoe UI', 'Arial', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app-container {
    max-width: 1200px;
    width: 94vw;
    min-height: 90vh;
    margin: 48px auto;
    padding: 48px 48px 56px 48px;
    background: var(--card-bg);
    border-radius: 32px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    border: 1.5px solid var(--border);
}

@media (max-width: 700px) {
    #app-container {
        padding: 12px 2vw 28px 2vw;
        min-width: 0;
        border-radius: 18px;
    }
}

#tab-content-list {
    background: #fafbfc;
    color: #181818;
    border-radius: 18px;
    box-shadow: 0 4px 32px rgba(0,0,0,0.07);
    border: 1.5px solid #e0e0e0;
    padding: 32px 18px 32px 18px;
    margin-bottom: 32px;
}
#tab-content-list .table-responsive {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    border: 1.5px solid #e0e0e0;
    padding: 12px 0;
}
#tab-content-list .todos-table th, #tab-content-list .todos-table td {
    color: #181818;
}
#tab-content-list .todos-table th {
    background: #222;
    color: #fff;
    border-bottom: 2px solid #e0e0e0;
    font-weight: 700;
}
#tab-content-list .todos-table td {
    background: #fff;
}
#tab-content-list .todos-table tbody tr:nth-child(even) td {
    background: #f4f4f4;
}
#tab-content-list .todos-table tbody tr:hover td {
    background: #e0e0e0;
    color: #111;
    font-weight: 600;
}

@media (max-width: 700px) {
    #app-container {
        padding: 8px 2vw 24px 2vw;
        min-width: 0;
    }
}

h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-heading);
    margin-bottom: 0.8em;
}

h1 {
    font-size: 2.2rem;
    margin-bottom: 1.2rem;
    color: var(--accent-dark);
}

h2 {
    font-size: 1.8rem;
    color: var(--accent);
}

h3 {
    font-size: 1.4rem;
    color: var(--text-secondary);
}

.tab-bar {
    display: flex;
    background: #f4f4f4;
    border-radius: 999px;
    padding: 4px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-sm);
    gap: 0;
    align-items: center;
    justify-content: flex-start;
    width: fit-content;
    position: relative;
    z-index: 1;
}
.tab-btn {
    background: none;
    border: none;
    outline: none;
    color: var(--muted);
    font-size: 1.05em;
    font-weight: 600;
    padding: 12px 32px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    position: relative;
    overflow: hidden;
}

.tab-btn:hover {
    color: var(--text);
}
.tab-btn.active, #tab-list-btn.tab-btn.active {
    background: #222;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.13);
    border: none;
}

.tab-btn:focus-visible, #tab-list-btn:focus-visible {
    outline: 2px solid #222;
    outline-offset: 2px;
}

.tab-btn, #tab-list-btn {
    border: none;
    box-shadow: none;
}

.tab-btn:hover, #tab-list-btn:hover {
    background: #444;
    color: #fff;
    box-shadow: 0 2px 8px #e0e0e0;
}
.tab-btn {
    color: #222;
    background: transparent;
    font-weight: 700;
}
.tab-btn:hover {
    background: #e0e0e0;
    color: #111;
    box-shadow: 0 2px 8px #e0e0e0;
}

.tab-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    width: 100%;
}
.tab-content.active {
    display: block;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: none; }
}

.add-todo-btn, button[type="button"], button {
    background: #222;
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 12px 28px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    margin-top: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.11);
    transition: all 0.2s ease-in-out;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}
.add-todo-btn:hover, button[type="button"]:hover, button:hover {
    background: #444;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.13);
    border: 2px solid #e0e0e0;
    transform: translateY(-1px) scale(1.03);
}
button:active {
    background: #111;
    color: #fff;
    box-shadow: 0 1px 2px #222;
    border: 2px solid #e0e0e0;
    transform: translateY(1px) scale(0.97);
}
button:focus-visible {
    outline: 2px solid #222;
    outline-offset: 2px;
}
button.secondary {
    background: #f4f4f4;
    color: #222;
    border: 2px solid #888;
}
button.secondary:hover {
    background: #222;
    color: #fff;
    border: 2px solid #e0e0e0;
}
button.danger {
    background: #111;
    color: #fff;
    border: 2px solid #888;
}
button.danger:hover {
    background: #444;
    color: #fff;
    border: 2px solid #222;
}

.add-todo-btn:hover, button[type="button"]:hover, button:hover {
    background: var(--accent-dark);
    box-shadow: 0 4px 12px rgba(100,27,46,0.14);
    transform: translateY(-1px);
}

button:active {
    background: #641B2E;
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(100,27,46,0.13);
}

.add-todo-btn:hover, button[type="button"]:hover, button:hover {
    background: var(--accent-dark);
    box-shadow: 0 4px 12px rgba(108,99,255,0.15);
    transform: translateY(-1px);
}

button:active {
    background: #3b36a5;
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(108,99,255,0.1);
}

button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Secondary button style */
button.secondary {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
    box-shadow: none;
}

button.secondary:hover {
    background: var(--accent-light);
    color: var(--accent-dark);
    box-shadow: 0 2px 8px rgba(108,99,255,0.07);
}

button.danger {
    background: var(--danger);
}

button.danger:hover {
    background: #c53030;
    box-shadow: 0 4px 12px rgba(229,62,62,0.15);
}

input, select, textarea {
    font-family: inherit;
    font-size: 1em;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    margin-top: 6px;
    margin-bottom: 18px;
    background: #fafbff;
    color: var(--text);
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
    width: 100%;
}

input:hover, select:hover, textarea:hover {
    border-color: #d1d5db;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
    background: #fff;
}

label {
    font-weight: 600;
    font-size: 0.95em;
    color: var(--text-secondary);
    margin-bottom: 4px;
    display: block;
}

::placeholder {
    color: var(--muted);
    opacity: 0.7;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    max-width: 100vw;
    margin: 0;
    padding: 0;
}
.todos-table {
    width: 100%;
    min-width: 1100px;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.95em;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 24px;
    table-layout: auto;
}
.todos-table th {
    background: linear-gradient(90deg, #641B2E 0%, #8A2D3B 40%, #BE5B50 80%, #FBDB93 100%);
    color: #fff;
    font-weight: 700;
    font-size: 0.97em;
    padding: 18px 16px;
    position: sticky;
    top: 0;
    z-index: 2;
    border: none;
    letter-spacing: 0.01em;
    text-shadow: 0 2px 6px #8A2D3B, 0 1px 1px #641B2E;
    text-transform: uppercase;
    border-bottom: 3px solid #FBDB93;
}

.todos-table td {
    border: none;
    padding: 16px;
    background: #fff;
    color: #641B2E;
    vertical-align: middle;
    transition: all 0.2s ease;
    border-bottom: 1px solid #FBDB93;
}

.todos-table tbody tr:nth-child(even) td {
    background: #FBDB93;
    color: #641B2E;
}

.todos-table tbody tr:hover td {
    background: #BE5B50;
    color: #fff;
}

.todos-table tbody tr:last-child td {
    border-bottom: none;
}
.todos-table tbody tr:nth-child(even) td {
    background: #fafbff;
}

.todos-table tbody tr:hover td {
    background: #f0f0ff;
}

.todos-table tbody tr:last-child td {
    border-bottom: none;
}
.todos-table th.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
}
.todos-table th.sortable:after {
    content: '';
    display: inline-block;
    margin-left: 8px;
    border: 4px solid transparent;
    border-top-color: #fff;
    vertical-align: middle;
    opacity: 0.6;
}
.todos-table th.sortable[data-col]:hover {
    background: #5146e1;
}

.table-edit-input {
    background: #f7f8fe;
    border: 1.5px solid var(--accent);
    border-radius: 7px;
    padding: 7px 10px;
    font-size: 1em;
    box-shadow: 0 1px 4px rgba(108,99,255,0.07);
}

/* Modal (black/white/grey palette) */
.modal {
    position: fixed;
    z-index: 2000;
    left: 0; top: 0; right: 0; bottom: 0;
    background: rgba(20,20,20,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease-out;
}
.modal-content {
    background: #fff;
    padding: 36px 28px 28px 28px;
    border-radius: 18px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.18);
    min-width: 340px;
    max-width: 96vw;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    border: 2px solid #e0e0e0;
}
.modal-edit-todo h2 {
    margin-top: 0;
    margin-bottom: 24px;
    color: #111;
    font-size: 1.4em;
    font-weight: 700;
    text-align: left;
}
.modal-close-btn {
    position: absolute;
    top: 18px;
    right: 18px;
    background: none;
    border: none;
    font-size: 1.9em;
    color: #888;
    cursor: pointer;
    transition: color 0.15s;
    z-index: 10;
}
.modal-close-btn:hover {
    color: #222;
}
#modal-todo-form input:focus, #modal-todo-form textarea:focus, #modal-todo-form select:focus {
    outline: 2px solid #222;
    border-color: #222;
    background: #f4f4f4;
}
#modal-todo-form input, #modal-todo-form textarea, #modal-todo-form select {
    background: #fafbfc;
    border: 1.5px solid #e0e0e0;
    color: #181818;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 1em;
    margin-bottom: 10px;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.15s, background 0.15s;
}
#modal-todo-form label {
    font-weight: 600;
    color: #444;
    margin-bottom: 4px;
    display: block;
}
#modal-todo-form .add-todo-btn {
    margin-top: 18px;
    width: 100%;
    background: #222;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 700;
    padding: 12px 0;
    transition: background 0.15s;
}
#modal-todo-form .add-todo-btn:hover {
    background: #444;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
#password-modal input[type='password'] {
    font-size: 1em;
    padding: 14px 16px;
    margin-bottom: 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    width: 100%;
    background: #fff;
}
#password-modal-error {
    color: var(--danger);
    margin-top: 12px;
    font-size: 0.9em;
    padding: 10px 14px;
    background: var(--danger-light);
    border-radius: 8px;
    font-weight: 500;
}

::-webkit-scrollbar {
    width: 10px;
    background: #f4f6fa;
}
::-webkit-scrollbar-thumb {
    background: #d5d7e3;
    border-radius: 6px;
}

.form-section {
    margin-bottom: 16px;
}
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

@media (max-width: 900px) {
    .todos-table {
        min-width: 800px;
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .todos-table {
        min-width: 500px;
    }
    #app-container {
        padding: 4px 0 18px 0;
    }
}
#app-container {
    max-width: 98vw;
    width: 98vw;
    min-height: 90vh;
    margin: 16px auto;
    padding: 16px 16px 32px 16px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
}

@media (min-width: 1200px) {
    #app-container {
        max-width: 1600px;
        width: 98vw;
    }
}

.tab-bar {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 2px solid #e5e7eb;
}
.tab-btn {
    flex: 1;
    padding: 12px 0;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-bottom 0.2s, background 0.2s;
}
.tab-btn.active {
    border-bottom: 3px solid #2563eb;
    background: #f1f5fb;
    color: #2563eb;
}
.tab-content {
    display: none;
}
.tab-content.active {
    display: block;
}

h1 {
    text-align: center;
}
form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 24px;
}
.form-section {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 0;
}
.form-section.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-section.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 18px;
}
form label {
    font-weight: 500;
    margin-bottom: 3px;
}
form input, form select, form textarea {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}
.add-todo-btn {
    margin-top: 10px;
    padding: 12px 0;
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}
.add-todo-btn:hover {
    background: #1742a7;
}
@media (max-width: 700px) {
    .form-section.grid-2, .form-section.grid-3 {
        grid-template-columns: 1fr;
    }
}

#todos-list {
    margin-top: 24px;
}
.table-responsive {
    width: 100%;
    overflow-x: auto;
    max-width: 100vw;
    margin: 0;
    padding: 0;
}

.todos-table {
    width: 100%;
    min-width: 1100px;
    border-collapse: collapse;
    font-size: 1rem;
    background: #fff;
    table-layout: auto;
}

.todos-table th, .todos-table td {
    border: 1px solid #e5e7eb;
    padding: 8px 10px;
    text-align: left;
    vertical-align: top;
}
.todos-table th {
    background: #f1f5fb;
    position: sticky;
    top: 0;
    z-index: 1;
}
.todos-table tbody tr:nth-child(even) {
    background: #f8f9fa;
}
.todos-table a {
    color: #2563eb;
    text-decoration: underline;
}
.todos-table .status-Busy {
    color: #d97706;
    font-weight: bold;
}
.todos-table .status-Done {
    color: #16a34a;
    font-weight: bold;
}
.todos-table .status-W4A {
    color: #2563eb;
    font-weight: bold;
}
.todos-table .status-blank {
    color: #6b7280;
}

.status-Busy { color: #d97706; }
.status-Done { color: #16a34a; }
.status-W4A { color: #2563eb; }
.status-blank { color: #6b7280; }
.urgent, .importance, .prio {
    font-weight: bold;
}