/* ================================================================
   Task Tracker — Stylesheet
   Palette: neutral grays, minimal accent, professional
   ================================================================ */

:root {
    --text:       #1f2937;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    --bg:         #f9fafb;
    --bg-card:    #ffffff;
    --border:     #e5e7eb;
    --border-light:#f3f4f6;
    --nav-bg:     #1f2937;
    --nav-text:   #f9fafb;
    --accent:     #4b5563;
    --accent-hover:#374151;
    --success:    #059669;
    --success-bg: #ecfdf5;
    --warning:    #d97706;
    --warning-bg: #fffbeb;
    --danger:     #dc2626;
    --danger-bg:  #fef2f2;
    --info-bg:    #f0f4f8;
    /* Vague badges — softer tones */
    --v1: #6b8cae;
    --v2: #c4975a;
    --v3: #5a9e6f;
    --v4: #b36b6b;
    --ctrl: #8b7aaa;
    --akto: #c25a6d;
    --trans: #5a9e96;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.navbar {
    background: var(--nav-bg);
    color: var(--nav-text);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.navbar .brand {
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.2px;
}
.navbar .brand img { height: 24px; opacity: 0.95; }
.navbar .nav-right {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
}
.navbar .nav-right span { opacity: 0.7; }
.navbar a.nav-link {
    color: var(--nav-text);
    text-decoration: none;
    background: rgba(255,255,255,0.08);
    padding: 6px 14px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 500;
    transition: background 0.15s;
}
.navbar a.nav-link:hover { background: rgba(255,255,255,0.15); }

/* ---- STATS ---- */
.stats-bar {
    display: flex;
    gap: 16px;
    padding: 20px 28px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}
.stat-card {
    flex: 1;
    padding: 16px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border);
    background: var(--bg);
}
.stat-card .number {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -1px;
}
.stat-card .label {
    font-size: 11px;
    font-weight: 600;
    margin-top: 2px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
}
.stat-card.s-total .number  { color: var(--text); }
.stat-card.s-done .number   { color: var(--success); }
.stat-card.s-pending .number{ color: var(--warning); }
.stat-card.s-overdue .number{ color: var(--danger); }

/* ---- PROGRESS ---- */
.progress-section {
    padding: 14px 28px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}
.progress-label {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 5px;
    display: flex;
    justify-content: space-between;
}
.progress-bar-bg {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.progress-bar-fill {
    height: 100%;
    background: var(--success);
    border-radius: 3px;
    transition: width 0.4s ease;
}

/* ---- TABS ---- */
.tabs {
    display: flex;
    padding: 0 28px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}
.tab {
    padding: 12px 20px;
    cursor: pointer;
    font-weight: 500;
    font-size: 13px;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
    user-select: none;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--text); }

/* ---- CONTENT ---- */
.content { padding: 20px 28px; }
.panel { display: none; }
.panel.active { display: block; }

/* ---- TASK LIST ---- */
.task-item {
    background: var(--bg-card);
    border-radius: 6px;
    padding: 14px 16px;
    margin-bottom: 6px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--border);
    transition: box-shadow 0.15s;
}
.task-item:hover { box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.task-item.completed { opacity: 0.5; border-left-color: var(--success); }
.task-item.overdue { border-left-color: var(--danger); }

.task-checkbox {
    width: 22px;
    height: 22px;
    border-radius: 4px;
    border: 2px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
    transition: all 0.15s;
    background: var(--bg);
}
.task-checkbox:hover { border-color: var(--success); background: var(--success-bg); }
.task-item.completed .task-checkbox {
    background: var(--success);
    border-color: var(--success);
}
.task-checkbox .check { display: none; color: white; font-size: 12px; font-weight: 700; }
.task-item.completed .task-checkbox .check { display: block; }

.task-body { flex: 1; min-width: 0; }
.task-desc { font-size: 14px; line-height: 1.5; }
.task-item.completed .task-desc { text-decoration: line-through; color: var(--text-muted); }
.task-meta {
    margin-top: 5px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.badge {
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 600;
    color: white;
    letter-spacing: 0.3px;
}
.badge-v1   { background: var(--v1); }
.badge-v2   { background: var(--v2); }
.badge-v3   { background: var(--v3); }
.badge-v4   { background: var(--v4); }
.badge-ctrl { background: var(--ctrl); }
.badge-akto { background: var(--akto); }
.badge-trans{ background: var(--trans); }

.meta-text { font-size: 12px; color: var(--text-muted); }
.meta-text.overdue-text { color: var(--danger); font-weight: 600; }
.completed-info { font-size: 11px; color: var(--success); }

/* ---- GANTT ---- */
.gantt-container {
    background: var(--bg-card);
    border-radius: 6px;
    padding: 20px;
    overflow-x: auto;
    border: 1px solid var(--border);
}
.gantt-header {
    display: flex;
    margin-left: 300px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 6px;
    position: relative;
    height: 22px;
}
.gantt-month {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-light);
    position: absolute;
}
.gantt-row {
    display: flex;
    align-items: center;
    min-height: 30px;
    border-bottom: 1px solid var(--border-light);
}
.gantt-row:hover { background: var(--border-light); }
.gantt-label {
    width: 300px;
    flex-shrink: 0;
    padding: 4px 8px;
    font-size: 11px;
    white-space: normal;
    line-height: 1.4;
    color: var(--text);
}
.gantt-bar-area {
    flex: 1;
    position: relative;
    height: 24px;
}
.gantt-bar {
    position: absolute;
    height: 18px;
    top: 3px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 6px;
    font-size: 9px;
    color: white;
    font-weight: 600;
}
.gantt-bar.done { opacity: 0.25; }
.gantt-today {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--danger);
    z-index: 10;
}
.gantt-today-label {
    position: absolute;
    top: -16px;
    font-size: 8px;
    color: var(--danger);
    font-weight: 600;
    transform: translateX(-50%);
}

/* ---- PEOPLE GRID ---- */
.people-section { padding: 20px 28px; }
.people-section h2 { font-size: 16px; margin-bottom: 14px; font-weight: 600; }
.people-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.person-card {
    background: var(--bg-card);
    border-radius: 6px;
    padding: 16px;
    border: 1px solid var(--border);
    text-align: center;
}
.person-card .name { font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.person-card .person-progress {
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin: 8px 0 6px;
    overflow: hidden;
}
.person-card .person-progress-fill {
    height: 100%;
    background: var(--success);
    border-radius: 2px;
}
.person-card .person-stats { font-size: 12px; color: var(--text-light); }

/* ---- TABLE ---- */
.task-table {
    width: 100%;
    background: var(--bg-card);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
    border-collapse: collapse;
}
.task-table th {
    background: var(--bg);
    padding: 10px 14px;
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-light);
    letter-spacing: 0.4px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}
.task-table td {
    padding: 10px 14px;
    border-top: 1px solid var(--border-light);
    font-size: 13px;
    vertical-align: top;
}
.task-table tr:hover { background: var(--border-light); }
.task-table tr.row-completed { opacity: 0.45; }
.task-table tr.row-overdue td:first-child { border-left: 3px solid var(--danger); }

.status-done    { color: var(--success); font-weight: 600; font-size: 12px; }
.status-pending { color: var(--text-muted); font-size: 12px; }
.status-overdue { color: var(--danger); font-weight: 600; font-size: 12px; }

/* ---- LOGIN ---- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}
.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 40px 36px;
    width: 380px;
}
.login-card .logo { text-align: center; margin-bottom: 20px; }
.login-card .logo img { height: 40px; }
.login-card h1 {
    font-size: 22px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 4px;
}
.login-card .subtitle {
    color: var(--text-light);
    text-align: center;
    margin-bottom: 28px;
    font-size: 13px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 5px;
}
.form-group input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
    background: var(--bg);
}
.form-group input:focus { border-color: var(--accent); }

.btn-primary {
    width: 100%;
    padding: 10px;
    background: var(--nav-bg);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-primary:hover { background: var(--accent-hover); }

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 16px;
    text-align: center;
    font-size: 13px;
    border: 1px solid #fecaca;
}

/* ---- FOOTER ---- */
.footer {
    text-align: center;
    padding: 20px;
    font-size: 11px;
    color: var(--text-muted);
}

/* ---- ERROR PAGE ---- */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
.error-page .code { font-size: 64px; font-weight: 800; color: var(--text-light); }
.error-page .msg { font-size: 16px; color: var(--text-muted); margin: 10px 0 28px; }
.error-page a {
    background: var(--nav-bg);
    color: white;
    padding: 10px 24px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    font-size: 13px;
}