:root {
    --bg-page:       #0f172a;
    --bg-card:       #1e293b;
    --bg-hover:      #293548;
    --border-color:  #334155;
    --text-primary:  #e2e8f0;
    --text-muted:    #94a3b8;
    --accent-color:  #3b82f6;
    --accent-hover:  #2563eb;
    --success:       #22c55e;
    --warning:       #f59e0b;
    --danger:        #ef4444;
    --income-color:  #22c55e;
    --expense-color: #ef4444;
    --receivable-color: #f59e0b;
    --sidebar-width: 240px;
}

/* ─── RESET & BASE ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    min-height: 100vh;
}
a { color: var(--accent-color); text-decoration: none; }
a:hover { opacity: .8; }
img { max-width: 100%; }

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

/* Sidebar - Disabled globally */
.sidebar { display: none !important; }
.sidebar-brand {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border-color);
}
.sidebar-brand h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: -0.5px;
}
.sidebar-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.nav-section {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 8px 8px 4px;
    margin-top: 8px;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all .15s;
    margin-bottom: 2px;
}
.nav-link:hover, .nav-link.active {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.nav-link.active { color: var(--accent-color); }
.nav-icon { width: 18px; text-align: center; }
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}
.user-info { font-size: 0.8rem; }
.user-info strong { display: block; color: var(--text-primary); }
.user-info .role { color: var(--text-muted); font-size: 0.75rem; }
.btn-logout {
    display: block;
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--danger);
}

/* Main content */
.main-content {
    margin-left: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.page-header {
    padding: 24px 32px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 12px;
}
.header-left { display: flex; align-items: center; gap: 12px; }
.brand-icon { font-size: 1.8rem; line-height: 1; }
.brand-favicon-img { width: 32px; height: 32px; object-fit: contain; border-radius: 6px; }
.header-right { display: flex; align-items: center; gap: 20px; }

.header-user { display: flex; align-items: center; gap: 12px; padding: 6px 14px; background: var(--bg-hover); border-radius: 12px; border: 1px solid var(--border-color); }
.user-meta { display: flex; flex-direction: column; line-height: 1.3; }
.user-meta strong { font-size: 0.85rem; color: var(--text-primary); }
.user-meta .role { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.btn-logout-icon { font-size: 1.2rem; cursor: pointer; transition: transform 0.2s; }
.btn-logout-icon:hover { transform: scale(1.1); }
.page-title { font-size: 1.4rem; font-weight: 600; }
.page-body { padding: 20px 24px 40px; }

/* ─── CARDS ────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}
.card-body { padding: 20px; }
.card-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Summary Cards */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.summary-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 100%;
    border-radius: 12px 0 0 12px;
}
.summary-card.income::after  { background: var(--income-color); }
.summary-card.expense::after { background: var(--expense-color); }
.summary-card.receivable::after { background: var(--receivable-color); }
.summary-card.balance::after { background: var(--accent-color); }
.summary-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: .05em; }
.summary-value { font-size: 1.5rem; font-weight: 700; margin-top: 6px; }
.summary-card.income .summary-value  { color: var(--income-color); }
.summary-card.expense .summary-value { color: var(--expense-color); }
.summary-card.receivable .summary-value { color: var(--receivable-color); }

/* ─── BUTTONS ──────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: none;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s;
}
.btn-primary   { background: var(--accent-color); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success   { background: var(--success); color: #fff; }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-ghost     { background: transparent; color: var(--text-muted); border: 1px solid var(--border-color); }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }
.btn-sm        { padding: 5px 10px; font-size: 0.78rem; }
.btn-link      { background: none; border: none; color: var(--accent-color); padding: 0; font-size: 0.82rem; }
.btn-icon {
    width: 30px; height: 30px;
    border-radius: 6px;
    display: inline-flex; align-items: center; justify-content: center;
    background: transparent; border: 1px solid var(--border-color);
    cursor: pointer; color: var(--text-muted); font-size: 0.8rem;
    transition: all .15s;
}
.btn-icon:hover       { color: var(--text-primary); background: var(--bg-hover); }
.btn-icon.edit:hover  { color: var(--accent-color); }
.btn-icon.delete:hover { color: var(--danger); }

/* ─── TABLES ───────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.data-table thead th {
    padding: 10px 14px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
.data-table tbody tr { transition: background .1s; }
.data-table tbody tr:hover { background: var(--bg-hover); }
.data-table tbody td {
    padding: 11px 14px;
    border-bottom: 1px solid rgba(51,65,85,.5);
    color: var(--text-primary);
}
.data-table tfoot td {
    padding: 10px 14px;
    font-weight: 600;
    border-top: 1px solid var(--border-color);
}
tbody tr:last-child td { border-bottom: none; }

/* ─── BADGES ───────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 600;
}
.badge-success  { background: rgba(34,197,94,.15); color: var(--success); }
.badge-warning  { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-danger   { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-info     { background: rgba(59,130,246,.15); color: var(--accent-color); }
.badge-muted    { background: rgba(148,163,184,.1); color: var(--text-muted); }

/* ─── FORMS ────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.80rem; color: var(--text-muted); font-weight: 500; margin-bottom: 6px; }
.form-control {
    width: 100%;
    padding: 9px 12px;
    background: var(--bg-page);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: border-color .15s;
}
.form-control:focus { outline: none; border-color: var(--accent-color); }
.form-control::placeholder { color: var(--text-muted); }
.form-row { display: grid; gap: 12px; }
.form-row.col-2 { grid-template-columns: 1fr 1fr; }
.form-row.col-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ─── MODAL ────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.6);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000; padding: 20px;
    animation: fadeIn .15s;
}
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 28px;
    animation: slideUp .2s;
}
.modal-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 20px; }
.modal-footer { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* ─── FLASH MESSAGES ───────────────────────────────── */
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 0.875rem; }
.flash-error   { background: rgba(239,68,68,.12); color: #f87171; border: 1px solid rgba(239,68,68,.25); }
.flash-success { background: rgba(34,197,94,.12);  color: #4ade80; border: 1px solid rgba(34,197,94,.25); }
.flash-warning { background: rgba(245,158,11,.12); color: #fbbf24; border: 1px solid rgba(245,158,11,.25); }
.flash-info    { background: rgba(59,130,246,.12); color: #60a5fa; border: 1px solid rgba(59,130,246,.25); }

/* ─── PAGINATION ───────────────────────────────────── */
.pagination { display: flex; gap: 4px; align-items: center; margin-top: 20px; }
.page-btn {
    width: 32px; height: 32px;
    border-radius: 6px; border: 1px solid var(--border-color);
    background: transparent; color: var(--text-muted);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    font-size: 0.82rem; transition: all .15s;
}
.page-btn:hover   { background: var(--bg-hover); color: var(--text-primary); }
.page-btn.active  { background: var(--accent-color); border-color: var(--accent-color); color: #fff; }
.page-btn:disabled { opacity: .4; cursor: default; }

/* ─── FILTER BAR ───────────────────────────────────── */
.filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-bottom: 16px;
}
.filter-bar .form-control { width: auto; min-width: 140px; }

/* ─── UNIFIED TOP NAV TABS ────────────────────────── */
.top-nav-tabs {
    display: flex;
    padding: 12px 32px;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(51, 65, 85, 0.4);
    position: relative;
    z-index: 100;
}
.top-nav-tabs .nav-link {
    padding: 8px 18px;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.82rem;
    white-space: nowrap;
    transition: all 0.2s;
    color: var(--text-muted);
}
.top-nav-tabs .nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}
.top-nav-tabs .nav-link.active {
    background: var(--accent-color);
    border-color: var(--accent-hover);
    color: #fff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}
.top-nav-tabs .nav-link .nav-icon {
    font-size: 1.1rem;
    margin-right: 6px;
}

/* ─── NAV MORE DROPDOWN ──────────────────────────── */
.nav-more-wrapper {
    position: relative;
    margin-left: auto;
}
.nav-more-btn {
    cursor: pointer;
    font-family: inherit;
}
.nav-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    z-index: 9999;
    animation: navDropIn 0.15s ease;
}
.nav-dropdown.open {
    display: flex;
    flex-direction: column;
}
.nav-dropdown .nav-link {
    border-radius: 8px;
    border: none;
    background: transparent;
    padding: 10px 14px;
    font-size: 0.84rem;
    margin-bottom: 0;
}
.nav-dropdown .nav-link:hover {
    background: var(--bg-hover);
    transform: none;
}
.nav-dropdown .nav-link.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-color);
    box-shadow: none;
}
@keyframes navDropIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ─── EMPTY STATE ──────────────────────────────────── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state h3 { font-size: 1rem; color: var(--text-primary); margin-bottom: 6px; }



/* ─── ANIMATIONS ───────────────────────────────────── */
@keyframes fadeIn  { from { opacity: 0; }    to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ─── RESPONSIVE ────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar         { display: none !important; }
    .main-content    { margin-left: 0; }
    .top-nav-tabs    { display: flex; }
    .page-header     { padding: 16px 20px 8px; }
    .page-title      { font-size: 1.2rem; }
    .page-body       { padding: 10px 20px 40px; }

    /* Mobil Tablo Kart Görünümü (CSS tabanlı) */
    .data-table[data-card] thead { display: none; }
    .data-table[data-card]        { display: block; }
    .data-table[data-card] tbody  { display: block; }
    .data-table[data-card] tbody tr {
        display: block;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 12px;
        padding: 4px 0;
    }
    .data-table[data-card] tbody tr:hover { background: var(--bg-card); }
    .data-table[data-card] tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 14px;
        border-bottom: 1px solid rgba(51,65,85,.3);
        text-align: right;
    }
    .data-table[data-card] tbody td:last-child {
        border-bottom: none;
    }
    .data-table[data-card] tbody td::before {
        font-weight: 500;
        color: var(--text-muted);
        text-align: left;
        margin-right: 16px;
    }
    .data-table[data-card] tbody td:nth-child(1)::before { content: var(--c1, ""); }
    .data-table[data-card] tbody td:nth-child(2)::before { content: var(--c2, ""); }
    .data-table[data-card] tbody td:nth-child(3)::before { content: var(--c3, ""); }
    .data-table[data-card] tbody td:nth-child(4)::before { content: var(--c4, ""); }
    .data-table[data-card] tbody td:nth-child(5)::before { content: var(--c5, ""); }
    .data-table[data-card] tbody td:nth-child(6)::before { content: var(--c6, ""); }
    .data-table[data-card] tbody td:nth-child(7)::before { content: var(--c7, ""); }
    .data-table[data-card] tbody td:nth-child(8)::before { content: var(--c8, ""); }
    .data-table[data-card] tbody td:nth-child(9)::before { content: var(--c9, ""); }
    .data-table[data-card] tbody td:nth-child(10)::before { content: var(--c10, ""); }
    .data-table[data-card] tbody td:empty { display: none; }
}
@media (max-width: 480px) {
    .summary-grid { grid-template-columns: 1fr; }
}

/* ─── SCROLLBAR ─────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #475569; }

/* ─── AMOUNTS ───────────────────────────────────────── */
.amount-income   { color: var(--income-color);   font-weight: 600; }
.amount-expense  { color: var(--expense-color);  font-weight: 600; }
.amount-neutral  { color: var(--text-primary); font-weight: 600; }

/* ─── UTILITY ─────────────────────────────────────── */
.text-muted   { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.mt-auto      { margin-top: auto; }
.gap-8        { gap: 8px; }
.d-flex       { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap    { flex-wrap: wrap; }