/* ========================================
   FREE PROJECT MANAGEMENT SOFTWARE
   Clean & modern design (no dark mode)
   ======================================== */

:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-subtle: #f1f5f9;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #e0e7ff;
    --color-primary-soft: #eef2ff;
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;

    /* Label palette (background, foreground, border) */
    --label-teal-bg: #ccfbf1;     --label-teal-fg: #0f766e;     --label-teal-bd: #14b8a6;
    --label-blue-bg: #dbeafe;     --label-blue-fg: #1d4ed8;     --label-blue-bd: #3b82f6;
    --label-green-bg: #dcfce7;    --label-green-fg: #15803d;    --label-green-bd: #22c55e;
    --label-yellow-bg: #fef9c3;   --label-yellow-fg: #854d0e;   --label-yellow-bd: #eab308;
    --label-orange-bg: #ffedd5;   --label-orange-fg: #9a3412;   --label-orange-bd: #f97316;
    --label-red-bg: #fee2e2;      --label-red-fg: #b91c1c;      --label-red-bd: #ef4444;
    --label-purple-bg: #f3e8ff;   --label-purple-fg: #6b21a8;   --label-purple-bd: #a855f7;
    --label-gray-bg: #e2e8f0;     --label-gray-fg: #334155;     --label-gray-bd: #64748b;

    --font-main: 'DM Sans', system-ui, -apple-system, sans-serif;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
    --transition: 150ms ease;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg-alt);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

code {
    font-family: 'SF Mono', Menlo, Monaco, Consolas, monospace;
    font-size: 0.9em;
    padding: 1px 5px;
    background: var(--color-bg-subtle);
    border-radius: 4px;
    color: var(--color-text);
}

/* ========================================
   HEADER
   ======================================== */
.header {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-soft) 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 56px 0 36px;
    text-align: center;
}

.header h1 {
    font-size: clamp(1.85rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}

.header h1 .highlight {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.7em;
    display: inline-block;
    vertical-align: middle;
}

.header .subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 760px;
    margin: 0 auto;
}

/* ========================================
   MAIN APP
   ======================================== */
.main {
    padding: 28px 0 48px;
    min-height: 60vh;
}

/* Toolbar */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 18px;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ========================================
   PROJECT OVERVIEW CARD
   ======================================== */
.project-overview {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-soft) 100%);
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    margin-bottom: 22px;
    box-shadow: var(--shadow-sm);
}

.project-overview-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.project-overview-title-block {
    flex: 1 1 auto;
    min-width: 0;
}

.project-overview-eyebrow {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.project-overview-title {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
    margin: 0;
    letter-spacing: -0.01em;
    cursor: pointer;
    word-break: break-word;
}

.project-overview-title:hover {
    color: var(--color-primary);
}

.project-overview-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 4px;
    line-height: 1.5;
    word-break: break-word;
}

.project-overview-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.project-overview-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 14px;
    margin-bottom: 16px;
}

.project-stat {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.project-stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.project-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.project-stat-value.is-overdue {
    color: var(--color-danger);
}

.project-stat-value.is-due-today {
    color: var(--color-warning);
}

.project-stat-value.is-success {
    color: var(--color-success);
}

.project-stat-sub {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.project-progress {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}

.project-progress-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.project-progress-meta strong {
    color: var(--color-text);
    font-weight: 600;
}

.project-progress-bar {
    width: 100%;
    height: 10px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    overflow: hidden;
}

.project-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    border-radius: 999px;
    transition: width 300ms ease;
}

.project-progress-fill.is-complete {
    background: linear-gradient(90deg, var(--color-success) 0%, #059669 100%);
}

.project-assignees {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.project-assignees-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-right: 4px;
}

.assignee-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.78rem;
    font-weight: 500;
    border-radius: 999px;
    line-height: 1.4;
    white-space: nowrap;
}

.assignee-chip .assignee-count {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 1px 7px;
    border-radius: 999px;
}

.assignee-chip.is-empty {
    color: var(--color-text-light);
    font-style: italic;
    background: transparent;
    border-style: dashed;
}

/* Card-level assignee tag (in card body) */
.card-assignee {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 7px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 10px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

/* Filter bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    padding: 14px 16px;
    margin-bottom: 22px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.filter-search {
    position: relative;
    flex: 1 1 320px;
    min-width: 240px;
    display: flex;
    align-items: center;
}

.filter-search svg {
    position: absolute;
    left: 12px;
    color: var(--color-text-light);
    pointer-events: none;
}

.filter-search input {
    width: 100%;
    padding: 10px 14px 10px 36px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.filter-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.filter-chips {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}

.filter-select {
    padding: 8px 12px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    min-width: 130px;
    transition: all var(--transition);
}

.filter-select:focus,
.filter-select:hover {
    outline: none;
    border-color: var(--color-primary);
}

.filter-input {
    padding: 8px 12px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-width: 150px;
    transition: all var(--transition);
}

.filter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    white-space: nowrap;
}

.btn svg {
    flex-shrink: 0;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-border-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 8px 12px;
}

.btn-ghost:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-danger {
    color: var(--color-danger);
}

.btn-danger:hover {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.btn-small {
    padding: 6px 10px;
    font-size: 0.8rem;
}

/* Export menu (dropdown) */
.export-menu-wrap {
    position: relative;
    display: inline-block;
}

.export-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 220px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 50;
    display: none;
}

.export-menu.active {
    display: block;
}

.export-menu button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 0.88rem;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition);
}

.export-menu button:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.export-menu .export-menu-hint {
    display: block;
    font-size: 0.72rem;
    color: var(--color-text-light);
    font-weight: 400;
    margin-top: 1px;
}

/* ========================================
   BOARD
   ======================================== */
.board {
    display: flex;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 20px;
    min-height: 420px;
    align-items: flex-start;
}

.column {
    flex: 0 0 300px;
    min-width: 300px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 230px);
    box-shadow: var(--shadow-sm);
}

.column.dragging {
    opacity: 0.5;
}

.column.drag-over {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.column-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: grab;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.column-header:active {
    cursor: grabbing;
}

.column-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.column-count {
    background: var(--color-bg-subtle);
    color: var(--color-text-muted);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 10px;
    min-width: 24px;
    text-align: center;
}

.column-actions {
    display: flex;
    gap: 4px;
}

.column-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.column-btn:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
}

.column-cards {
    padding: 12px;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 80px;
}

.column-cards.drag-over {
    background: var(--color-primary-soft);
    border-radius: 0;
}

.add-card-btn {
    margin: 0 12px 12px;
    padding: 9px;
    background: transparent;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.add-card-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 11px 12px;
    cursor: grab;
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

.card:active {
    cursor: grabbing;
}

.card.dragging {
    opacity: 0.5;
    transform: rotate(2deg);
}

.card-labels {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 6px;
}

.card-title {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
    word-wrap: break-word;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.45;
    margin-bottom: 6px;
    word-wrap: break-word;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    margin-top: 6px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

/* Label chips */
.label-chip {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 10px;
    line-height: 1.5;
    white-space: nowrap;
}

.label-teal   { background: var(--label-teal-bg);   color: var(--label-teal-fg); }
.label-blue   { background: var(--label-blue-bg);   color: var(--label-blue-fg); }
.label-green  { background: var(--label-green-bg);  color: var(--label-green-fg); }
.label-yellow { background: var(--label-yellow-bg); color: var(--label-yellow-fg); }
.label-orange { background: var(--label-orange-bg); color: var(--label-orange-fg); }
.label-red    { background: var(--label-red-bg);    color: var(--label-red-fg); }
.label-purple { background: var(--label-purple-bg); color: var(--label-purple-fg); }
.label-gray   { background: var(--label-gray-bg);   color: var(--label-gray-fg); }

/* Priority pill */
.priority-pill {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-radius: 10px;
    border: 1px solid transparent;
}

.priority-low {
    background: var(--label-blue-bg);
    color: var(--label-blue-fg);
    border-color: var(--label-blue-bd);
}

.priority-medium {
    background: var(--label-yellow-bg);
    color: var(--label-yellow-fg);
    border-color: var(--label-yellow-bd);
}

.priority-high {
    background: var(--label-orange-bg);
    color: var(--label-orange-fg);
    border-color: var(--label-orange-bd);
}

.priority-urgent {
    background: var(--label-red-bg);
    color: var(--label-red-fg);
    border-color: var(--label-red-bd);
}

/* Due-date badge */
.due-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 7px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 10px;
    background: var(--color-bg-subtle);
    color: var(--color-text-muted);
}

.due-badge svg {
    flex-shrink: 0;
}

.due-overdue {
    background: var(--label-red-bg);
    color: var(--label-red-fg);
}

.due-today {
    background: var(--label-orange-bg);
    color: var(--label-orange-fg);
}

.due-soon {
    background: var(--label-blue-bg);
    color: var(--label-blue-fg);
}

.due-later {
    background: var(--color-bg-subtle);
    color: var(--color-text-muted);
}

/* Checklist badge */
.checklist-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 7px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 10px;
    background: var(--color-bg-subtle);
    color: var(--color-text-muted);
}

.checklist-badge.checklist-complete {
    background: var(--label-green-bg);
    color: var(--label-green-fg);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.5);
    z-index: 1000;
    overflow-y: auto;
    padding: 40px 20px;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.modal-content {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 540px;
    width: 100%;
    padding: 32px;
    position: relative;
    animation: modalSlideIn 0.25s ease;
}

.modal-small {
    max-width: 420px;
}

.modal-card {
    max-width: 580px;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--color-text-muted);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--color-bg-subtle);
    color: var(--color-text);
}

.modal-content h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 18px;
    padding-right: 36px;
}

.modal-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: 18px;
    margin-bottom: 8px;
}

.modal-content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 12px;
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="search"],
.form-group textarea,
.form-group select,
.form-input,
.form-select {
    width: 100%;
    padding: 10px 12px;
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.form-actions > .btn-primary {
    margin-left: auto;
}

.form-help {
    display: block;
    font-size: 0.78rem;
    color: var(--color-text-light);
    margin-top: 6px;
}

/* Color picker (label modal) */
.color-picker {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.color-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    padding: 0;
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    border-color: var(--color-text);
    box-shadow: 0 0 0 2px var(--color-bg);
}

/* Labels picker (card modal) */
.labels-multiselect {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 48px;
    align-items: center;
}

.label-chip-btn {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-family: var(--font-main);
    font-size: 0.78rem;
    font-weight: 600;
    border-radius: 12px;
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0.55;
    transition: all var(--transition);
}

.label-chip-btn:hover {
    opacity: 0.85;
}

.label-chip-btn.selected {
    opacity: 1;
    border-color: var(--color-text);
}

.empty-hint {
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-style: italic;
}

/* Checklist editor */
.checklist-editor {
    list-style: none;
    margin: 0 0 8px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 200px;
    overflow-y: auto;
}

.checklist-editor .empty-hint {
    padding: 8px 0;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-alt);
}

.checklist-item.done .checklist-text {
    text-decoration: line-through;
    color: var(--color-text-light);
}

.checklist-toggle {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.checklist-text {
    flex: 1;
    font-size: 0.9rem;
    color: var(--color-text);
    word-break: break-word;
}

.checklist-remove {
    background: transparent;
    border: none;
    color: var(--color-text-light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.checklist-remove:hover {
    color: var(--color-danger);
}

.checklist-add {
    display: flex;
    gap: 8px;
}

.checklist-add input {
    flex: 1;
    padding: 8px 12px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.checklist-add input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Labels manager */
.labels-manager {
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 320px;
    overflow-y: auto;
}

.label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 12px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.label-row-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.label-rename-input {
    padding: 6px 10px;
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    width: 140px;
}

.label-rename-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.label-color-select {
    padding: 6px 8px;
    font-family: var(--font-main);
    font-size: 0.8rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.label-add {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.label-add input {
    flex: 1;
    min-width: 180px;
    padding: 9px 12px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.label-add input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Confirm modal */
.confirm-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

/* ========================================
   SAVE INDICATOR & TOAST
   ======================================== */
.save-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 4px;
    font-size: 0.8rem;
    color: var(--color-success);
    opacity: 0;
    transition: opacity 300ms ease;
}

.save-indicator.visible {
    opacity: 1;
}

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    background: var(--color-text);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all 300ms ease;
    z-index: 2000;
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--color-success);
}

.toast.error {
    background: var(--color-danger);
}

/* ========================================
   SEO CONTENT
   ======================================== */
.seo-content {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 64px 0;
}

.seo-section {
    margin-bottom: 56px;
}

.seo-section:last-child {
    margin-bottom: 0;
}

.seo-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-intro {
    font-size: 1.02rem;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    max-width: 850px;
}

.section-intro:last-of-type {
    margin-bottom: 28px;
}

.section-intro strong {
    color: var(--color-text);
    font-weight: 600;
}

.seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.seo-card {
    padding: 22px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: box-shadow var(--transition);
}

.seo-card:hover {
    box-shadow: var(--shadow-md);
}

.seo-icon {
    font-size: 1.85rem;
    margin-bottom: 10px;
}

.seo-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.seo-card p {
    font-size: 0.93rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.seo-card p strong {
    color: var(--color-text);
    font-weight: 500;
}

/* Comparison table */
.compare-table-wrapper {
    overflow-x: auto;
    margin-bottom: 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    min-width: 760px;
}

.compare-table thead th {
    background: var(--color-bg-alt);
    color: var(--color-text);
    font-weight: 600;
    text-align: left;
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
    font-size: 0.88rem;
}

.compare-table thead th.compare-highlight {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.compare-table tbody th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    white-space: nowrap;
}

.compare-table tbody td {
    padding: 12px 16px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td {
    border-bottom: none;
}

.compare-table tbody td.compare-highlight {
    background: rgba(79, 70, 229, 0.06);
    color: var(--color-text);
}

.compare-table tbody td.compare-highlight strong {
    color: var(--color-primary);
}

.compare-footnote {
    font-size: 0.82rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: 28px;
    max-width: 780px;
}

.compare-callouts {
    margin-top: 8px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-item summary {
    padding: 16px 22px;
    font-size: 0.98rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-muted);
    transition: transform var(--transition);
    margin-left: 12px;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary:hover {
    background: var(--color-bg);
}

.faq-item p {
    padding: 0 22px 18px;
    font-size: 0.94rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.faq-item p strong {
    color: var(--color-text);
    font-weight: 600;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-alt);
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.footer-links {
    margin-top: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-search {
        flex: 1 1 auto;
    }

    .filter-chips {
        justify-content: flex-start;
    }

    .project-overview-actions {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header {
        padding: 36px 0 24px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }

    .board {
        flex-direction: column;
        align-items: stretch;
    }

    .column {
        flex: none;
        min-width: 100%;
        max-height: none;
    }

    .btn {
        flex: 1;
        justify-content: center;
        padding: 11px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .seo-content {
        padding: 44px 0;
    }

    .seo-section h2 {
        font-size: 1.25rem;
    }

    .modal-content {
        margin: 0;
        padding: 24px;
    }

    .filter-chips {
        gap: 10px;
    }

    .filter-select {
        min-width: 110px;
    }

    .project-overview {
        padding: 18px 16px;
    }

    .project-overview-title {
        font-size: 1.3rem;
    }

    .project-overview-actions .btn {
        flex: 1 1 calc(50% - 4px);
    }
}

@media (max-width: 480px) {
    .toolbar-left,
    .toolbar-right {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .filter-group {
        flex: 1 1 calc(50% - 6px);
        min-width: 0;
    }

    .filter-select,
    .filter-input {
        width: 100%;
        min-width: 0;
    }
}

/* ========================================
   PRINT (for one-page project report)
   ======================================== */
@media print {
    .header,
    .toolbar,
    .filter-bar,
    .save-indicator,
    .seo-content,
    .footer,
    .modal,
    .project-overview-actions,
    .add-card-btn,
    .column-actions {
        display: none !important;
    }

    body {
        background: white;
        font-size: 11pt;
    }

    .main {
        padding: 0;
    }

    .project-overview {
        background: white !important;
        border: 1px solid #000;
        margin-bottom: 12mm;
        page-break-after: avoid;
    }

    .project-overview-stats {
        gap: 8px;
    }

    .project-stat {
        border: 1px solid #999;
    }

    .board {
        flex-wrap: wrap;
        gap: 8mm;
    }

    .column {
        flex: 0 0 calc(50% - 4mm);
        min-width: auto;
        page-break-inside: avoid;
        border: 1px solid #000;
        box-shadow: none;
    }

    .card {
        border: 1px solid #ccc;
        box-shadow: none;
        page-break-inside: avoid;
    }

    @page {
        size: A4;
        margin: 12mm;
    }
}