/* =========================================
   PK Automations DocHub - Flat Modern UI
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

:root {
    --primary: #2a52be;
    --primary-dark: #1e3f8f;
    --primary-subtle: #ebf0fc;
    --accent: #0cfb56;
    --accent-dark: #08d448;
    --accent-subtle: #e6ffed;
    --bg-body: #f3f4f6;
    --bg-card: #ffffff;
    --bg-surface: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --border: #e5e7eb;
    --border-focus: #2a52be;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* =========================================
   Layout
   ========================================= */
.app-container { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    width: 260px;
    background: #ffffff;
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    padding: 24px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand img {
    height: 75px;
    width: auto;
}

.sidebar-brand .brand-sub {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.sidebar-nav { padding: 20px 12px; flex: 1; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--bg-surface);
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary-subtle);
    color: var(--primary);
}

.nav-item.active i { color: var(--primary); }

.nav-item i { 
    font-size: 18px; 
    width: 22px; 
    text-align: center;
    color: var(--text-muted);
    transition: var(--transition);
}

.nav-item:hover i { color: var(--primary); }

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    background: var(--bg-surface);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 0;
    min-height: 100vh;
}

.page-header {
    background: #ffffff;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-title {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-title i { color: var(--primary); }
.page-title span { color: var(--text-secondary); font-weight: 500; }

.page-body { padding: 32px 24px; }

/* =========================================
   Cards
   ========================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 36px;
}

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

.card-title {
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin-bottom: 12px;
    background: var(--primary-subtle);
    color: var(--primary);
}

.stat-card:nth-child(2) .stat-icon { background: var(--accent-subtle); color: var(--accent-dark); }
.stat-card:nth-child(3) .stat-icon { background: #fef3c7; color: #d97706; }
.stat-card:nth-child(4) .stat-icon { background: #fee2e2; color: #dc2626; }

.stat-value {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* =========================================
   Buttons
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
}

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

.btn-accent {
    background-color: var(--accent);
    color: #111827;
}
.btn-accent:hover {
    background-color: var(--accent-dark);
}

.btn-outline {
    background-color: #ffffff;
    border-color: var(--border);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: var(--primary-subtle);
}

.btn-danger {
    background-color: #ef4444;
    color: #ffffff;
}
.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }

/* =========================================
   Forms
   ========================================= */
.form-group { margin-bottom: 20px; }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background-color: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* =========================================
   Tables
   ========================================= */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
}

table th {
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table td {
    padding: 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

table tr:hover td { background: var(--bg-surface); }
table tr:last-child td { border-bottom: none; }

/* =========================================
   Badges
   ========================================= */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.badge-invoice { background: var(--primary-subtle); color: var(--primary-dark); }
.badge-proforma { background: #fef3c7; color: #b45309; }
.badge-receipt { background: var(--accent-subtle); color: var(--accent-dark); }
.badge-quotation { background: #f3e8ff; color: #7e22ce; }
.badge-delivery_note { background: #e0f2fe; color: #0369a1; }
.badge-credit_note { background: #fee2e2; color: #b91c1c; }
.badge-paid { background: var(--accent-subtle); color: var(--accent-dark); }
.badge-draft { background: #f3f4f6; color: #4b5563; }
.badge-sent { background: var(--primary-subtle); color: var(--primary-dark); }
.badge-overdue { background: #fee2e2; color: #b91c1c; }

/* =========================================
   Items Builder (Document form)
   ========================================= */
.items-table { margin-bottom: 24px; }

.items-table .item-row {
    display: grid;
    grid-template-columns: 2fr 80px 120px 120px 40px;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
}

.items-table .item-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0 4px;
}

.remove-item-btn {
    width: 36px;
    height: 36px;
    border: 1px solid transparent;
    background: #fee2e2;
    color: #ef4444;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.remove-item-btn:hover { background: #fca5a5; color: #b91c1c; }

.totals-section {
    display: flex;
    justify-content: flex-end;
    margin-top: 24px;
}

.totals-box {
    width: 100%;
    max-width: 320px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.total-row.grand {
    border-top: 2px solid var(--primary);
    margin-top: 12px;
    padding-top: 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
}

/* =========================================
   Savings Tracker
   ========================================= */
.savings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

.person-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-areas: 
        "avatar name"
        "avatar label"
        "avatar total";
    align-items: center;
    column-gap: 16px;
    row-gap: 4px;
    text-align: left;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--border);
}

.person-card.pius { border-left-color: var(--primary); border-top-color: var(--border); }
.person-card.peter { border-left-color: var(--accent-dark); border-top-color: var(--border); }

.person-card .stat-label {
    grid-area: label;
    font-size: 13px;
    margin: 0;
    line-height: 1.2;
}

.person-avatar {
    grid-area: avatar;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    font-family: 'Outfit', sans-serif;
}

.pius .person-avatar { background: var(--primary-subtle); color: var(--primary); }
.peter .person-avatar { background: var(--accent-subtle); color: var(--accent-dark); }

.person-name {
    grid-area: name;
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.person-total {
    grid-area: total;
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 800;
    margin: 0;
    line-height: 1.2;
}

.pius .person-total { color: var(--primary); }
.peter .person-total { color: var(--accent-dark); }

.combined-total {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    margin-bottom: 32px;
    border-top: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
}

.combined-value {
    font-family: 'Outfit', sans-serif;
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
}

/* =========================================
   Modal
   ========================================= */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(17, 24, 39, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.modal-overlay.active { display: flex; }

.modal {
    background: #ffffff;
    border-radius: var(--radius-md);
    width: 90%;
    max-width: 500px;
    padding: 32px;
    box-shadow: var(--shadow-hover);
    animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-title {
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

/* =========================================
   Document Type Selector
   ========================================= */
.doc-type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.doc-type-btn {
    padding: 20px 16px;
    background: #ffffff;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.doc-type-btn:hover { 
    border-color: var(--primary); 
    background: var(--primary-subtle);
}

.doc-type-btn.active {
    border-color: var(--primary);
    background: var(--primary-subtle);
    color: var(--primary-dark);
}

.doc-type-btn i { font-size: 24px; display: block; margin-bottom: 12px; color: inherit; }
.doc-type-btn span { font-size: 13px; font-weight: 600; }

/* =========================================
   Mobile Responsive
   ========================================= */
.mobile-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    background: #ffffff;
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .sidebar { transform: translateX(-100%); transition: transform 0.3s ease; }
    .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-hover); }
    .main-content { margin-left: 0; width: 100%; overflow-x: hidden; }
    .page-header { padding: 15px; padding-left: 60px; flex-direction: column; align-items: flex-start; gap: 10px; }
    .page-body { padding: 15px; }
    .items-table .item-header { display: none; }
    .items-table .item-row { grid-template-columns: 1fr; background: #f9fafb; padding: 15px; border-radius: 8px; border: 1px solid var(--border); margin-bottom: 15px; }
    .savings-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .card { padding: 15px; }
}

@media (max-width: 480px) {
    .doc-type-grid { grid-template-columns: repeat(2, 1fr); }
    .totals-section { justify-content: center; width: 100%; }
}

/* Toast */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}
.toast.success { border-left: 4px solid var(--accent-dark); }
.toast.error { border-left: 4px solid #ef4444; }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state i { font-size: 48px; margin-bottom: 16px; display: block; color: var(--border); }
.empty-state p { font-size: 15px; color: var(--text-secondary); }