/* style.css - Team Task Manager UI */
/* Author: Kartikey Kumar Tripathi */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --white: #ffffff;
    --sidebar-width: 240px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    font-size: 14px;
    line-height: 1.5;
}

/* ===== AUTH PAGES ===== */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
}

.auth-box {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.auth-logo {
    text-align: center;
    margin-bottom: 28px;
}

.auth-logo h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
}

.auth-logo p { color: var(--gray-500); font-size: 13px; margin-top: 4px; }

.auth-tabs {
    display: flex;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.auth-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: 16px; }

label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--gray-900);
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--white);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    width: 100%;
    justify-content: center;
    padding: 11px;
    font-size: 15px;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
    border-radius: 6px;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover { background: var(--gray-100); }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #b91c1c; }

.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #15803d; }

/* ===== APP LAYOUT ===== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--gray-900);
    color: var(--white);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-logo {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo h2 { font-size: 16px; font-weight: 700; }
.sidebar-logo p { font-size: 11px; color: rgba(255,255,255,0.5); margin-top: 2px; }

.sidebar-nav { padding: 12px 8px; flex: 1; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    transition: all 0.15s;
    margin-bottom: 2px;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.nav-item:hover { background: rgba(255,255,255,0.08); color: white; }
.nav-item.active { background: var(--primary); color: white; }

.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer {
    padding: 12px 8px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.user-info {
    padding: 10px 12px;
    margin-bottom: 6px;
}

.user-name { font-size: 13px; font-weight: 600; }
.user-role {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 24px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-title { font-size: 22px; font-weight: 700; color: var(--gray-900); }
.page-subtitle { font-size: 13px; color: var(--gray-500); margin-top: 2px; }

/* ===== STATS CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--gray-200);
}

.stat-card.primary { border-left-color: var(--primary); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.danger { border-left-color: var(--danger); }

.stat-number { font-size: 32px; font-weight: 700; color: var(--gray-900); }
.stat-label { font-size: 12px; color: var(--gray-500); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ===== CARDS ===== */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }

/* ===== TABLE ===== */
.table-container { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    padding: 10px 14px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--gray-100);
    font-size: 13px;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.badge-todo { background: var(--gray-100); color: var(--gray-700); }
.badge-in_progress { background: #dbeafe; color: #1d4ed8; }
.badge-done { background: var(--success-light); color: var(--success); }
.badge-low { background: var(--gray-100); color: var(--gray-700); }
.badge-medium { background: var(--warning-light); color: var(--warning); }
.badge-high { background: var(--danger-light); color: var(--danger); }
.badge-admin { background: #f3e8ff; color: #7e22ce; }
.badge-member { background: var(--primary-light); color: var(--primary-dark); }
.badge-overdue { background: var(--danger-light); color: var(--danger); }

/* ===== PROGRESS BAR ===== */
.progress-bar-wrap {
    background: var(--gray-200);
    border-radius: 99px;
    height: 8px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 99px;
    transition: width 0.5s ease;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal {
    background: var(--white);
    border-radius: 12px;
    padding: 28px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title { font-size: 18px; font-weight: 700; }

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-500);
    line-height: 1;
}

/* ===== FILTERS ===== */
.filters-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.filters-row input,
.filters-row select {
    width: auto;
    min-width: 140px;
}

/* ===== ALERT / TOAST ===== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    animation: slideIn 0.3s ease;
    max-width: 300px;
}

.toast-success { background: var(--success); color: white; }
.toast-error { background: var(--danger); color: white; }
.toast-info { background: var(--primary); color: white; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ===== OVERDUE ROW HIGHLIGHT ===== */
tr.overdue-row td { background: #fff5f5; }
.overdue-text { color: var(--danger); font-weight: 600; }

/* ===== ACTIVITY LOG ===== */
.activity-item {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 13px;
}

.activity-item:last-child { border-bottom: none; }
.activity-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    margin-top: 5px;
    flex-shrink: 0;
}

.activity-time { color: var(--gray-500); font-size: 11px; margin-top: 2px; }

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--gray-500);
}

.empty-state-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ===== COMMENTS ===== */
.comment {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-100);
}

.comment:last-child { border-bottom: none; }
.comment-meta { font-size: 11px; color: var(--gray-500); margin-bottom: 4px; }
.comment-text { font-size: 13px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .page-header { flex-direction: column; align-items: flex-start; gap: 10px; }

    .filters-row { flex-direction: column; }
    .filters-row input, .filters-row select { width: 100%; }

    .hamburger {
        display: block;
        position: fixed;
        top: 12px;
        left: 12px;
        z-index: 200;
        background: var(--gray-900);
        border: none;
        color: white;
        font-size: 20px;
        padding: 8px 10px;
        border-radius: 6px;
        cursor: pointer;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }

    .sidebar-overlay.show { display: block; }
}

@media (min-width: 769px) {
    .hamburger { display: none; }
    .sidebar-overlay { display: none !important; }
}

/* ===== LOADING ===== */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== HIDDEN utility ===== */
.hidden { display: none !important; }

/* ===== GRID layouts ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

@media (max-width: 600px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-muted { color: var(--gray-500); font-size: 12px; }
.fw-600 { font-weight: 600; }