/* ============================================
   TaskFlow Pro — Main Stylesheet
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --primary:       #1e3a5f;
    --primary-light: #2d6bcf;
    --accent:        #00c6ae;
    --danger:        #e74c3c;
    --warning:       #f39c12;
    --success:       #27ae60;
    --info:          #2980b9;
    --dark:          #1a1a2e;
    --gray-100:      #f4f6fb;
    --gray-200:      #e8ecf4;
    --gray-300:      #d1d9e6;
    --gray-500:      #8898aa;
    --gray-700:      #4a5568;
    --white:         #ffffff;
    --sidebar-w:     260px;
    --radius:        12px;
    --shadow:        0 4px 24px rgba(30,58,95,.10);
    --shadow-lg:     0 8px 40px rgba(30,58,95,.15);
    --font-body:     'Plus Jakarta Sans', sans-serif;
    --font-heading:  'Space Grotesk', sans-serif;
    --transition:    .2s cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 15px; }
body {
    font-family: var(--font-body);
    background: var(--gray-100);
    color: var(--dark);
    margin: 0;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--sidebar-w);
    background: var(--primary);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition);
    box-shadow: 4px 0 20px rgba(0,0,0,.15);
}
.sidebar-logo {
    padding: 28px 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-logo h2 {
    font-family: var(--font-heading);
    color: #fff;
    margin: 0;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -.3px;
}
.sidebar-logo span { color: var(--accent); }
.sidebar-user {
    padding: 16px 24px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    display: flex;
    align-items: center;
    gap: 12px;
}
.sidebar-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: #fff; font-size: .85rem;
    flex-shrink: 0;
}
.sidebar-user-info { flex: 1; overflow: hidden; }
.sidebar-user-name { color: #fff; font-weight: 600; font-size: .85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user-role { color: rgba(255,255,255,.5); font-size: .72rem; }

.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.nav-section { padding: 16px 24px 4px; color: rgba(255,255,255,.35); font-size: .68rem; letter-spacing: 1.2px; text-transform: uppercase; font-weight: 600; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 11px 24px;
    color: rgba(255,255,255,.7);
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    transition: all var(--transition);
    position: relative;
}
.sidebar-nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.sidebar-nav a.active {
    color: #fff;
    background: rgba(255,255,255,.12);
    font-weight: 600;
}
.sidebar-nav a.active::before {
    content: '';
    position: absolute; left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    border-radius: 0 3px 3px 0;
}
.sidebar-nav a i { width: 18px; text-align: center; font-size: .95rem; }
.nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: #fff;
    font-size: .65rem;
    padding: 2px 7px;
    border-radius: 20px;
    font-weight: 700;
}
.sidebar-bottom { padding: 16px 24px; border-top: 1px solid rgba(255,255,255,.08); }
.sidebar-bottom a { color: rgba(255,255,255,.5); font-size: .8rem; display: flex; align-items: center; gap: 8px; text-decoration: none; }
.sidebar-bottom a:hover { color: #fff; }

/* ========== MAIN LAYOUT ========== */
.main-wrap { margin-left: var(--sidebar-w); min-height: 100vh; }
.topbar {
    background: #fff;
    padding: 14px 32px;
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
    position: sticky; top: 0; z-index: 50;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.topbar-title { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; color: var(--dark); }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.page-content { padding: 28px 32px; }

/* ========== CARDS ========== */
.card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}
.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
}
.card-header h3 { margin: 0; font-family: var(--font-heading); font-size: 1rem; font-weight: 700; }
.card-body { padding: 24px; }

/* ========== STAT CARDS ========== */
/* Stats grid — always 6 equal columns */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 20px 16px;
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 10px;
    box-shadow: var(--shadow);
    min-height: 120px;
    transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.stat-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.stat-info { text-align: center; }
.stat-info h2 { margin: 0; font-size: 1.6rem; font-weight: 800; font-family: var(--font-heading); line-height: 1; }
.stat-info p { margin: 4px 0 0; color: var(--gray-500); font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }

/* ========== TASK TABLE ========== */
.task-table { width: 100%; border-collapse: collapse; }
.task-table th {
    padding: 10px 16px;
    background: var(--gray-100);
    color: var(--gray-500);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .8px;
    font-weight: 700;
    text-align: left;
    border-bottom: 2px solid var(--gray-200);
}
.task-table td { padding: 14px 16px; border-bottom: 1px solid var(--gray-200); font-size: .875rem; vertical-align: middle; }
.task-table tr:hover td { background: var(--gray-100); }
.task-table tr:last-child td { border-bottom: none; }

/* ========== BADGES ========== */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .3px;
}
.badge-pending    { background: #fff3cd; color: #856404; }
.badge-inprogress { background: #cfe2ff; color: #084298; }
.badge-completed  { background: #d1e7dd; color: #0f5132; }
.badge-overdue    { background: #f8d7da; color: #842029; }
.badge-cancelled  { background: #e2e3e5; color: #41464b; }

/* Priority dots */
.priority-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

/* ========== FORMS ========== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; margin-bottom: 6px; font-weight: 600; font-size: .85rem; color: var(--gray-700); }
.form-label .req { color: var(--danger); }
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: .9rem;
    color: var(--dark);
    transition: border-color var(--transition), box-shadow var(--transition);
    background: #fff;
}
.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(45,107,207,.12);
}
.form-control[readonly] { background: var(--gray-100); color: var(--gray-500); }

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-family: var(--font-body);
    font-size: .875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #219a52; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #c0392b; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-info    { background: var(--info); color: #fff; }
.btn-outline { background: #fff; border: 1.5px solid var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 6px 14px; font-size: .8rem; }
.btn-xs { padding: 4px 10px; font-size: .75rem; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ========== PROGRESS BAR ========== */
.progress-bar-wrap { background: var(--gray-200); border-radius: 20px; height: 8px; overflow: hidden; }
.progress-bar-fill { height: 100%; border-radius: 20px; background: linear-gradient(90deg, var(--accent), var(--primary-light)); transition: width .6s ease; }

/* ========== MODAL ========== */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(10,15,30,.45);
    z-index: 999;
    align-items: center; justify-content: center;
    backdrop-filter: blur(3px);
}
.modal-overlay.active { display: flex; }
.modal-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    max-width: 680px;
    width: 95%;
    max-height: 92vh;
    overflow-y: auto;
    animation: modalIn .2s ease;
}
@keyframes modalIn { from { opacity:0; transform: translateY(-16px) scale(.97); } to { opacity:1; transform: none; } }
.modal-header {
    padding: 22px 28px;
    border-bottom: 1px solid var(--gray-200);
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; background: #fff; z-index: 1;
}
.modal-header h4 { margin: 0; font-family: var(--font-heading); font-weight: 700; }
.modal-body { padding: 28px; }
.modal-footer { padding: 16px 28px; border-top: 1px solid var(--gray-200); display: flex; justify-content: flex-end; gap: 10px; }
.btn-close { background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--gray-500); line-height: 1; }

/* ========== ALERTS ========== */
.alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 16px; display: flex; align-items: center; gap: 10px; font-size: .875rem; }
.alert-success { background: #d1e7dd; color: #0f5132; border: 1px solid #badbcc; }
.alert-danger   { background: #f8d7da; color: #842029; border: 1px solid #f5c2c7; }
.alert-warning  { background: #fff3cd; color: #664d03; border: 1px solid #ffecb5; }
.alert-info     { background: #cff4fc; color: #055160; border: 1px solid #b6effb; }

/* ========== FILTERS / SEARCH ========== */
.filters-bar {
    display: flex; flex-wrap: wrap; gap: 10px;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-100);
}
.filter-select, .filter-input {
    padding: 8px 12px;
    border: 1.5px solid var(--gray-300);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: .83rem;
    background: #fff;
    color: var(--dark);
}
.filter-select:focus, .filter-input:focus { outline: none; border-color: var(--primary-light); }

/* ========== LOGIN PAGE ========== */
.login-bg {
    min-height: 100vh;
    background: linear-gradient(135deg, #1e3a5f 0%, #16213e 40%, #0f3460 100%);
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.login-bg::before {
    content: '';
    position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.login-card {
    background: rgba(255,255,255,.97);
    border-radius: 20px;
    box-shadow: 0 24px 80px rgba(0,0,0,.3);
    padding: 48px 44px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h1 { font-family: var(--font-heading); font-size: 2rem; color: var(--primary); margin: 0; font-weight: 800; }
.login-logo p { color: var(--gray-500); margin: 4px 0 0; font-size: .85rem; }

/* ========== EMPTY STATE ========== */
.empty-state { text-align: center; padding: 60px 24px; }
.empty-state i { font-size: 4rem; color: var(--gray-300); margin-bottom: 16px; display: block; }
.empty-state h3 { font-family: var(--font-heading); color: var(--gray-500); font-weight: 600; margin: 0 0 8px; }
.empty-state p  { color: var(--gray-500); font-size: .875rem; margin: 0; }

/* ========== UTILITIES ========== */
.text-danger  { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-muted   { color: var(--gray-500); }
.text-sm      { font-size: .8rem; }
.fw-600       { font-weight: 600; }
.fw-700       { font-weight: 700; }
.mb-0         { margin-bottom: 0; }
.mt-16        { margin-top: 16px; }
.d-flex       { display: flex; }
.align-center { align-items: center; }
.gap-8        { gap: 8px; }
.gap-12       { gap: 12px; }
.ms-auto      { margin-left: auto; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ========== RESPONSIVE ========== */
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: none; }
    .main-wrap { margin-left: 0; }
    .page-content { padding: 20px 16px; }
    .stats-grid { grid-template-columns: repeat(3, 1fr); }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}