:root {
    --accent: #5f95c9;
    --good: #22c55e;
    --bad: #e2836f;
    --bg-1: #15171d;
    --bg-2: #1a1d24;
    --text: #e8e8ec;
    --text-muted: #96999f;
    --card-bg: #1c1f27;
    --card-border: #2c2f39;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    color: var(--text);
    background:
        radial-gradient(circle at 25% 15%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 45%),
        linear-gradient(180deg, var(--bg-1), var(--bg-2));
    background-attachment: fixed;
}

/* --- login page --- */
body.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    width: 100%;
    max-width: 380px;
    padding: 36px 32px;
    text-align: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.app-title {
    margin: 0 0 6px;
    font-size: 1.5rem;
}

.tagline {
    margin: 0 0 24px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.login-form,
.password-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: left;
}

.field-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 10px;
}

.text-input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--bg-1);
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
}

.text-input:focus {
    outline: 2px solid var(--accent);
}

textarea.text-input {
    resize: vertical;
    min-height: 38px;
}

.btn-primary {
    margin-top: 18px;
    padding: 10px 16px;
    border-radius: 8px;
    border: none;
    background: var(--accent);
    color: white;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary:hover {
    filter: brightness(1.08);
}

.btn-ghost {
    margin-top: 18px;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    font-size: 0.95rem;
}

.form-error {
    color: var(--bad);
    font-size: 0.85rem;
    margin: 0 0 12px;
}

.form-success {
    color: var(--good);
    font-size: 0.85rem;
    margin: 0 0 12px;
}

/* --- app shell --- */
.page {
    max-width: 640px;
    margin: 0 auto;
    padding: 24px 16px 60px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.topbar .app-title {
    margin: 0;
    font-size: 1.4rem;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.whoami {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-right: 4px;
}

.icon-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text);
    border-radius: 8px;
    padding: 7px 12px;
    cursor: pointer;
    font-size: 0.85rem;
}

.icon-btn:hover {
    border-color: var(--accent);
}

.board {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
}

.add-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}

.add-form #add-title {
    flex: 1 1 200px;
}

.add-form #add-description {
    flex: 1 1 100%;
}

.add-form .btn-primary {
    margin-top: 0;
    align-self: flex-start;
}

.section-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin: 0 0 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

.count-badge {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
}

.task-list {
    list-style: none;
    margin: 0 0 24px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.task {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    background: var(--bg-2);
}

.task.dragging {
    opacity: 0.5;
}

.task.completed {
    opacity: 0.6;
}

.task.completed .task-title {
    text-decoration: line-through;
}

.drag-handle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: grab;
    font-size: 1rem;
    line-height: 1;
    padding: 4px;
    touch-action: none;
}

.drag-handle:active {
    cursor: grabbing;
}

.drag-handle:disabled {
    visibility: hidden;
}

.task-check {
    margin-top: 3px;
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.task-body {
    flex: 1;
    min-width: 0;
}

.task-title {
    font-size: 0.95rem;
    word-break: break-word;
}

.task-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 3px;
    white-space: pre-wrap;
    word-break: break-word;
}

.task-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.task-actions .icon-btn {
    padding: 5px 9px;
    font-size: 0.8rem;
}

.hidden {
    display: none !important;
}

.edit-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.edit-actions {
    display: flex;
    gap: 8px;
}

.edit-actions .btn-primary,
.edit-actions .btn-ghost {
    margin-top: 4px;
    padding: 6px 12px;
    font-size: 0.85rem;
}

.empty-state {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 16px 0 28px;
}

.completed-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 600;
    cursor: pointer;
    padding: 0 0 10px;
}

.completed-toggle:hover {
    color: var(--text);
}

.completed-toggle .chevron {
    transition: transform 0.15s ease;
}

.completed-toggle.open .chevron {
    transform: rotate(180deg);
}

/* --- modal --- */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 16px;
}

.modal-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 28px;
    width: 100%;
    max-width: 340px;
}

.modal-card h2 {
    margin: 0 0 4px;
    font-size: 1.1rem;
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
}

@media (max-width: 480px) {
    .board {
        padding: 18px;
    }
}