/* ================================================================
   HaltCatch Finance — Main Stylesheet
   Theme: Editorial Black & White
   Fonts: Archivo (headings) + Lora (body)
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:ital,wght@0,400;0,500;0,600;0,700;0,900;1,400&family=Lora:ital,wght@0,400;0,500;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ----------------------------------------------------------------
   CSS Variables
   ---------------------------------------------------------------- */
:root {
    --ink:          #0a0a0a;
    --ink-light:    #1a1a1a;
    --ink-muted:    #555555;
    --ink-subtle:   #999999;

    --paper:        #ffffff;
    --paper-warm:   #fafaf8;
    --paper-muted:  #f4f4f2;
    --paper-border: #e8e8e4;

    --accent:       #0a0a0a;
    --accent-hover: #333333;

    --success:      #1a6b3c;
    --success-bg:   #edf7f1;
    --danger:       #8b1a1a;
    --danger-bg:    #fdf0f0;
    --warning:      #7a5c00;
    --warning-bg:   #fffbea;
    --info:         #0d4a6b;
    --info-bg:      #edf5fb;

    --sidebar-width: 240px;
    --topbar-height: 60px;

    --font-head:  'Archivo', sans-serif;
    --font-body:  'Lora', serif;
    --font-mono:  'JetBrains Mono', monospace;

    --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg:  0 8px 32px rgba(0,0,0,0.12);

    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
}

/* ----------------------------------------------------------------
   Reset & Base
   ---------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    background: var(--paper-warm);
    margin: 0;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--font-head);
    font-weight: 700;
    line-height: 1.2;
    color: var(--ink);
    letter-spacing: -0.02em;
}

a {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
    transition: opacity 0.15s;
}

a:hover {
    opacity: 0.7;
}

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

/* ----------------------------------------------------------------
   Sidebar
   ---------------------------------------------------------------- */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--ink);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: transform 0.25s ease;
}

/* Subtle noise texture overlay */
.sidebar::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    opacity: 0.5;
    pointer-events: none;
}

.sidebar-brand {
    padding: 22px 20px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    position: relative;
}

.sidebar-brand .brand-logo {
    max-height: 36px;
    max-width: 160px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.sidebar-brand .brand-name {
    font-family: var(--font-head);
    font-size: 0.95rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.02em;
    text-decoration: none;
    display: block;
}

.sidebar-brand .brand-name:hover {
    opacity: 1;
}

.sidebar-brand .brand-sub {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,0.35);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-top: 1px;
}

/* Nav sections */
.sidebar-nav {
    padding: 12px 0;
    flex: 1;
    overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 2px; }

.nav-section-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.28);
    padding: 16px 20px 4px;
}

.nav-item {
    list-style: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    font-family: var(--font-head);
    font-size: 0.82rem;
    font-weight: 500;
    color: rgba(255,255,255,0.62);
    text-decoration: none;
    border-radius: 0;
    transition: color 0.15s, background 0.15s;
    position: relative;
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: rgba(255,255,255,0.95);
    background: rgba(255,255,255,0.07);
    opacity: 1;
}

.nav-link.active {
    color: var(--ink);
    background: var(--paper);
    font-weight: 700;
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: var(--ink);
    display: none; /* Active state is enough */
}

.nav-link svg,
.nav-link .nav-icon {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    opacity: 0.8;
}

.nav-link.active svg,
.nav-link.active .nav-icon {
    opacity: 1;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
    position: relative;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.sidebar-user:hover { opacity: 0.85; }

.user-avatar {
    width: 30px;
    height: 30px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-head);
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

.user-name {
    font-family: var(--font-head);
    font-size: 0.78rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    line-height: 1.2;
}

.user-role {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: rgba(255,255,255,0.35);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ----------------------------------------------------------------
   Main Content Area
   ---------------------------------------------------------------- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: var(--paper);
    border-bottom: 1px solid var(--paper-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-title {
    font-family: var(--font-head);
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
    letter-spacing: -0.01em;
}

.breadcrumb-divider {
    color: var(--ink-subtle);
    font-size: 0.8rem;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-action {
    font-family: var(--font-head);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ink-muted);
    text-decoration: none;
    padding: 5px 12px;
    border: 1px solid var(--paper-border);
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.topbar-action:hover {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
    opacity: 1;
}

/* Page body */
.page-body {
    padding: 28px;
    flex: 1;
}

/* ----------------------------------------------------------------
   Cards
   ---------------------------------------------------------------- */
.card {
    background: var(--paper);
    border: 1px solid var(--paper-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

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

.card-title {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
    letter-spacing: -0.01em;
}

.card-body {
    padding: 20px;
}

/* ----------------------------------------------------------------
   Stat Cards
   ---------------------------------------------------------------- */
.stat-card {
    background: var(--paper);
    border: 1px solid var(--paper-border);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s, transform 0.2s;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-subtle);
    margin-bottom: 8px;
}

.stat-value {
    font-family: var(--font-head);
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--ink);
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 4px;
}

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

.stat-sub {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--ink-subtle);
    font-style: italic;
}

/* ----------------------------------------------------------------
   Tables
   ---------------------------------------------------------------- */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

.data-table thead th {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-subtle);
    padding: 10px 16px;
    text-align: left;
    border-bottom: 2px solid var(--paper-border);
    white-space: nowrap;
    background: var(--paper-muted);
}

.data-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--paper-border);
    font-family: var(--font-body);
    color: var(--ink-light);
    vertical-align: middle;
}

.data-table tbody tr:hover td {
    background: var(--paper-muted);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table .col-amount {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    text-align: right;
}

.data-table .col-actions {
    text-align: right;
    white-space: nowrap;
}

/* ----------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------- */
.btn {
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.01em;
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    transition: all 0.15s;
    text-decoration: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid transparent;
    line-height: 1.4;
}

.btn-primary {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}

.btn-primary:hover {
    background: var(--ink-light);
    border-color: var(--ink-light);
    color: var(--paper);
    opacity: 1;
}

.btn-outline {
    background: transparent;
    color: var(--ink);
    border-color: var(--paper-border);
}

.btn-outline:hover {
    background: var(--paper-muted);
    border-color: var(--ink-subtle);
    color: var(--ink);
    opacity: 1;
}

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

.btn-danger:hover {
    background: var(--danger);
    color: white;
    opacity: 1;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.73rem;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 0.9rem;
}

/* ----------------------------------------------------------------
   Forms
   ---------------------------------------------------------------- */
.form-label {
    font-family: var(--font-head);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 5px;
    display: block;
    letter-spacing: 0.01em;
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-control, .form-select {
    border: 1px solid var(--paper-border);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    font-family: var(--font-body);
    font-size: 0.87rem;
    color: var(--ink);
    background: var(--paper);
    width: 100%;
    transition: border-color 0.15s, box-shadow 0.15s;
    line-height: 1.5;
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--ink);
    box-shadow: 0 0 0 3px rgba(10,10,10,0.08);
}

.form-control::placeholder {
    color: var(--ink-subtle);
}

.form-text {
    font-size: 0.74rem;
    color: var(--ink-subtle);
    margin-top: 4px;
    font-style: italic;
}

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

/* ----------------------------------------------------------------
   Badges & Status
   ---------------------------------------------------------------- */
.badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 7px;
    border-radius: 2px;
    display: inline-block;
}

.badge-draft    { background: var(--paper-muted); color: var(--ink-muted); border: 1px solid var(--paper-border); }
.badge-sent     { background: var(--info-bg);     color: var(--info);     border: 1px solid #b8d9ee; }
.badge-partial  { background: var(--warning-bg);  color: var(--warning);  border: 1px solid #e8d88a; }
.badge-paid     { background: var(--success-bg);  color: var(--success);  border: 1px solid #a3d4b8; }
.badge-overdue  { background: var(--danger-bg);   color: var(--danger);   border: 1px solid #e8b0b0; }
.badge-cancelled{ background: var(--paper-muted); color: var(--ink-subtle); border: 1px solid var(--paper-border); text-decoration: line-through; }

/* ----------------------------------------------------------------
   Page Header
   ---------------------------------------------------------------- */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
}

.page-heading {
    font-family: var(--font-head);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    margin: 0 0 2px;
}

.page-subheading {
    font-size: 0.82rem;
    color: var(--ink-subtle);
    font-style: italic;
    margin: 0;
}

/* ----------------------------------------------------------------
   Flash Messages
   ---------------------------------------------------------------- */
.alert {
    font-family: var(--font-head);
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    border: 1px solid transparent;
}

.alert-success { background: var(--success-bg); color: var(--success); border-color: #a3d4b8; }
.alert-danger  { background: var(--danger-bg);  color: var(--danger);  border-color: #e8b0b0; }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: #e8d88a; }
.alert-info    { background: var(--info-bg);    color: var(--info);    border-color: #b8d9ee; }

/* ----------------------------------------------------------------
   Empty State
   ---------------------------------------------------------------- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 2.5rem;
    opacity: 0.25;
    margin-bottom: 16px;
    display: block;
}

.empty-state-title {
    font-family: var(--font-head);
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 6px;
}

.empty-state-text {
    font-size: 0.84rem;
    color: var(--ink-subtle);
    font-style: italic;
    margin-bottom: 20px;
}

/* ----------------------------------------------------------------
   Utilities
   ---------------------------------------------------------------- */
.text-mono  { font-family: var(--font-mono); }
.text-muted { color: var(--ink-muted); }
.text-subtle{ color: var(--ink-subtle); }
.text-right { text-align: right; }
.text-center{ text-align: center; }
.fw-bold    { font-weight: 700; }
.fw-black   { font-weight: 900; }
.small      { font-size: 0.8rem; }
.divider    { height: 1px; background: var(--paper-border); margin: 20px 0; }

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .page-body {
        padding: 16px;
    }
    .page-header {
        flex-direction: column;
    }
}

/* ----------------------------------------------------------------
   Print
   ---------------------------------------------------------------- */
@media print {
    .sidebar, .topbar { display: none; }
    .main-content { margin-left: 0; }
    .page-body { padding: 0; }
}