:root {
    --bg: #0f1115;
    --bg-soft: #161922;
    --card: #1b1f29;
    --card-hover: #212633;
    --border: #2a2f3c;
    --text: #e8e9ed;
    --text-muted: #9098ac;
    --gold: #d4a94f;
    --gold-soft: #f0d78c;
    --gold-dim: rgba(212, 169, 79, 0.12);
    --green: #4caf7d;
    --green-soft: rgba(76, 175, 125, 0.12);
    --red: #e2685f;
    --red-soft: rgba(226, 104, 95, 0.12);
    --blue: #5b8def;
    --blue-soft: rgba(91, 141, 239, 0.12);
    --purple: #a879ef;
    --purple-soft: rgba(168, 121, 239, 0.12);
    --radius: 14px;
    --radius-sm: 9px;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

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

.sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--bg-soft);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    position: sticky;
    top: 0;
    height: 100vh;
}

.sidebar-brand {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.sidebar-brand .brand-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--gold-soft);
    letter-spacing: 0.3px;
}

.sidebar-brand .brand-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 14px;
    border-left: 3px solid transparent;
    transition: all .15s ease;
}

.nav-item:hover {
    color: var(--text);
    background: var(--card);
}

.nav-item.active {
    color: var(--gold-soft);
    background: var(--gold-dim);
    border-left-color: var(--gold);
}

.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

.sidebar-footer {
    margin-top: auto;
    padding: 16px 24px 0;
    border-top: 1px solid var(--border);
}

.main {
    flex: 1;
    min-width: 0;
    padding: 28px 36px 60px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 26px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-title {
    font-size: 22px;
    font-weight: 600;
    margin: 0;
}

.page-sub {
    color: var(--text-muted);
    font-size: 13.5px;
    margin-top: 4px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all .15s ease;
    background: var(--card);
    color: var(--text);
    border: 1px solid var(--border);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--gold), #b8893c);
    color: #1a1406;
    border: none;
    font-weight: 600;
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-danger { color: var(--red); border-color: rgba(226,104,95,0.35); }
.btn-danger:hover { background: var(--red-soft); }

.btn-sm { padding: 6px 12px; font-size: 12.5px; }

/* ---------- Cards / Stats ---------- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .stat-value {
    font-size: 26px;
    font-weight: 700;
    margin-top: 8px;
}

.stat-card.gold .stat-value { color: var(--gold-soft); }
.stat-card.green .stat-value { color: var(--green); }
.stat-card.red .stat-value { color: var(--red); }
.stat-card.purple .stat-value { color: var(--purple); }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

/* ---------- Table ---------- */
.table-wrap {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

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

thead th {
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-soft);
}

tbody td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    vertical-align: middle;
}

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

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

.badge-gold { background: var(--gold-dim); color: var(--gold-soft); }
.badge-green { background: var(--green-soft); color: var(--green); }
.badge-red { background: var(--red-soft); color: var(--red); }
.badge-blue { background: var(--blue-soft); color: var(--blue); }
.badge-purple { background: rgba(168, 121, 239, 0.14); color: var(--purple); }
.badge-muted { background: rgba(255,255,255,0.06); color: var(--text-muted); }

.chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 9px;
    border-radius: 7px;
    font-size: 11.5px;
    font-weight: 500;
    background: rgba(255,255,255,0.05);
    color: var(--text-muted);
    margin-right: 4px;
    margin-bottom: 4px;
}
.chip.on { background: var(--gold-dim); color: var(--gold-soft); }

/* ---------- Forms ---------- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }

label { font-size: 13px; color: var(--text-muted); font-weight: 500; }

input[type=text], input[type=email], input[type=password], input[type=number],
input[type=date], input[type=tel], select, textarea {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 11px 14px;
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
    width: 100%;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--gold);
}

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

.check-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.check-row input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--gold); }

/* ---------- Searchable Select (müşteri arama) ---------- */
.search-select { position: relative; }
.search-select input[type=text] { width: 100%; }
.search-select .ss-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0; right: 0;
    max-height: 240px;
    overflow-y: auto;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    z-index: 20;
    box-shadow: var(--shadow);
}
.search-select .ss-dropdown.open { display: block; }
.search-select .ss-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}
.search-select .ss-item:last-child { border-bottom: none; }
.search-select .ss-item:hover, .search-select .ss-item.active {
    background: var(--gold-dim);
    color: var(--gold-soft);
}
.search-select .ss-item .ss-phone { font-size: 12px; color: var(--text-muted); }
.search-select .ss-item:hover .ss-phone, .search-select .ss-item.active .ss-phone { color: var(--gold-soft); opacity: .8; }
.search-select .ss-empty { padding: 14px; text-align:center; color: var(--text-muted); font-size: 13px; }

/* ---------- Aşama Stepper ---------- */
.stage-stepper {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 6px 0 4px;
}
.stage-step {
    flex: 1;
    text-align: center;
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    background: var(--bg-soft);
    color: var(--text-muted);
    border: 1px solid var(--border);
    position: relative;
}
.stage-step.done { background: var(--green-soft); color: var(--green); border-color: rgba(76,175,125,0.3); }
.stage-step.current { background: var(--gold-dim); color: var(--gold-soft); border-color: rgba(212,169,79,0.4); }
.stage-step.cancelled { background: var(--red-soft); color: var(--red); border-color: rgba(226,104,95,0.3); }

/* ---------- Cari Hesap ---------- */
.cari-balance {
    font-size: 26px;
    font-weight: 700;
}
.cari-balance.positive { color: var(--green); }
.cari-balance.negative { color: var(--red); }
.cari-balance.zero { color: var(--text-muted); }

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ---------- Progress bar (kapora/kalan) ---------- */
.progress-bar {
    width: 100%;
    height: 7px;
    background: var(--bg-soft);
    border-radius: 99px;
    overflow: hidden;
    margin-top: 6px;
}
.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gold), var(--gold-soft));
    border-radius: 99px;
}

/* ---------- Flash messages ---------- */
.flash {
    padding: 13px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    border: 1px solid transparent;
}
.flash-success { background: var(--green-soft); color: var(--green); border-color: rgba(76,175,125,0.3); }
.flash-error { background: var(--red-soft); color: var(--red); border-color: rgba(226,104,95,0.3); }

/* ---------- Login ---------- */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 30% 20%, #1c1f28 0%, #0f1115 60%);
}
.login-card {
    width: 380px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: var(--shadow);
}
.login-logo {
    text-align: center;
    margin-bottom: 28px;
}
.login-logo .icon {
    width: 56px; height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--gold), #b8893c);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 14px;
}
.login-logo .icon svg { width: 28px; height: 28px; color: #1a1406; }
.login-logo h1 { font-size: 18px; margin: 0; }
.login-logo p { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

/* ---------- Modal ---------- */
.modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(5,6,9,0.65);
    align-items: center; justify-content: center;
    z-index: 100;
    padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 26px;
    box-shadow: var(--shadow);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .sidebar {
        position: fixed;
        left: -240px;
        z-index: 200;
        transition: left .2s ease;
        box-shadow: var(--shadow);
    }
    .sidebar.open { left: 0; }
    .main { padding: 20px 16px 50px; }
    .mobile-topbar { display: flex !important; }
}

.mobile-topbar {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 50;
}

.table-scroll { overflow-x: auto; }
@media (max-width: 700px) {
    thead { display: none; }
    tbody, tr, td { display: block; width: 100%; }
    tbody tr {
        border-bottom: 1px solid var(--border);
        padding: 10px 0;
    }
    tbody td {
        border: none;
        padding: 6px 18px;
        display: flex;
        justify-content: space-between;
        gap: 12px;
    }
    tbody td::before {
        content: attr(data-label);
        color: var(--text-muted);
        font-size: 12px;
        font-weight: 600;
    }
}