:root {
    --primary: #3a5fe0; --primary-dark: #2c47b8; --primary-soft: #eaf0ff;
    --bg: #f2f4f9; --surface: #ffffff; --text: #1c2233; --text-muted: #6b7280;
    --border: #e4e7ef;
    --yemek: #e08a00; --kart: #7c4fe0; --kart-soft: #f7f4ff; --yatirim: #0ea5e9;
    --taksit: #7c4fe0; --abonelik: #33415c; --nakit: #6b7789; --danger: #e03434;
    --input-bg: #fbfbfe; --input-focus-bg: #ffffff; --hover-bg: #f7f9ff; --head-bg: #f7f8fc;
    --focus-ring: rgba(58,95,224,0.14);
    --scrollbar-thumb: #cfd5e3; --scrollbar-thumb-hover: #b7bfd2;
    --danger-soft-bg: #fdecec; --danger-soft-border: #f6b8b8; --danger-soft-text: #a3231f;
    --success-soft-bg: #eafaf0; --success-soft-border: #a9e6bf; --success-soft-text: #146c34;
    --radius: 10px; --radius-sm: 6px;
    --shadow-sm: 0 1px 2px rgba(20,25,45,0.05);
    --shadow: 0 2px 8px rgba(20,25,45,0.06), 0 1px 2px rgba(20,25,45,0.04);
    --shadow-lg: 0 12px 30px rgba(20,25,45,0.14);
    --modal-backdrop: rgba(20,25,45,0.55);
    color-scheme: light;
}

/* Gece modu: sistem tercihi varsayılan sinyal, data-theme her iki yönde de üzerine yazar. */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) { --gece-modu-aktif: 1; }
}
:root[data-theme="dark"] { --gece-modu-aktif: 1; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --primary: #7c96ff; --primary-dark: #a3b6ff; --primary-soft: rgba(124,150,255,0.14);
        --bg: #10121a; --surface: #191c27; --text: #e7e9f2; --text-muted: #9aa1b8;
        --border: #2b2f40;
        --yemek: #f2ac48; --kart: #b39dff; --kart-soft: rgba(124,79,250,0.16); --yatirim: #4fc3f7;
        --taksit: #b39dff; --abonelik: #a3acc9; --nakit: #9aa1b8; --danger: #ff6b6b;
        --input-bg: #1f2330; --input-focus-bg: #262b3a; --hover-bg: #212637; --head-bg: #1c202c;
        --focus-ring: rgba(124,150,255,0.25);
        --scrollbar-thumb: #333850; --scrollbar-thumb-hover: #454b68;
        --danger-soft-bg: rgba(255,107,107,0.12); --danger-soft-border: rgba(255,107,107,0.35); --danger-soft-text: #ff9494;
        --success-soft-bg: rgba(52,199,124,0.12); --success-soft-border: rgba(52,199,124,0.35); --success-soft-text: #6fe3a4;
        --shadow-sm: 0 1px 2px rgba(0,0,0,0.35);
        --shadow: 0 2px 10px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.3);
        --shadow-lg: 0 16px 34px rgba(0,0,0,0.55);
        --modal-backdrop: rgba(5,6,10,0.7);
        color-scheme: dark;
    }
}
:root[data-theme="dark"] {
    --primary: #7c96ff; --primary-dark: #a3b6ff; --primary-soft: rgba(124,150,255,0.14);
    --bg: #10121a; --surface: #191c27; --text: #e7e9f2; --text-muted: #9aa1b8;
    --border: #2b2f40;
    --yemek: #f2ac48; --kart: #b39dff; --kart-soft: rgba(124,79,250,0.16); --yatirim: #4fc3f7;
    --taksit: #b39dff; --abonelik: #a3acc9; --nakit: #9aa1b8; --danger: #ff6b6b;
    --input-bg: #1f2330; --input-focus-bg: #262b3a; --hover-bg: #212637; --head-bg: #1c202c;
    --focus-ring: rgba(124,150,255,0.25);
    --scrollbar-thumb: #333850; --scrollbar-thumb-hover: #454b68;
    --danger-soft-bg: rgba(255,107,107,0.12); --danger-soft-border: rgba(255,107,107,0.35); --danger-soft-text: #ff9494;
    --success-soft-bg: rgba(52,199,124,0.12); --success-soft-border: rgba(52,199,124,0.35); --success-soft-text: #6fe3a4;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.35);
    --shadow: 0 2px 10px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 16px 34px rgba(0,0,0,0.55);
    --modal-backdrop: rgba(5,6,10,0.7);
    color-scheme: dark;
}

* { box-sizing: border-box; }
body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0 24px 24px;
    -webkit-font-smoothing: antialiased;
    transition: background .2s, color .2s;
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Üst navigasyon --- */
.navbar {
    max-width: 1300px; margin: 0 auto 20px; padding: 14px 0;
    display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.navbar .logo {
    width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; box-shadow: var(--shadow);
}
.navbar .marka { font-size: 16px; font-weight: 800; color: var(--text); letter-spacing: -0.3px; margin-right: 6px; }
.navbar .baglantilar { display: flex; gap: 4px; flex-wrap: wrap; flex-grow: 1; }
.navbar .baglanti {
    padding: 8px 12px; border-radius: var(--radius-sm); font-size: 13px; font-weight: 600;
    color: var(--text-muted); text-decoration: none; transition: background .15s, color .15s;
}
.navbar .baglanti:hover { background: var(--primary-soft); color: var(--primary-dark); text-decoration: none; }
.navbar .baglanti.aktif { background: var(--primary); color: #fff; }
.navbar .kullanici-alani { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-muted); }
.navbar .kullanici-alani strong { color: var(--text); }
.navbar .cikis-btn {
    width: auto; padding: 7px 12px; font-size: 12.5px; background: var(--nakit);
}
.navbar .cikis-btn:hover { filter: brightness(0.88); }

.tema-btn {
    width: 36px; height: 36px; padding: 0; flex-shrink: 0; border-radius: 50%;
    background: var(--surface); border: 1px solid var(--border); box-shadow: none;
    font-size: 16px; display: flex; align-items: center; justify-content: center;
    color: var(--text);
}
.tema-btn:hover { background: var(--hover-bg); }

@media (max-width: 900px) {
    .navbar { flex-direction: column; align-items: flex-start; }
    .navbar .baglantilar { width: 100%; }
}

/* --- Genel bileşenler (mevcut tasarım dilinden taşındı) --- */
.container { max-width: 1300px; margin: auto; display: grid; grid-template-columns: 380px 1fr; gap: 20px; align-items: start; }
.page { max-width: 1300px; margin: auto; }
.page-narrow { max-width: 560px; margin: 40px auto; position: relative; }

.card {
    background: var(--surface); padding: 22px; border-radius: var(--radius);
    box-shadow: var(--shadow); border: 1px solid var(--border); margin-bottom: 20px;
}
h2, h3 { margin-top: 0; color: var(--text); font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; letter-spacing: -0.2px; }
h2 { font-size: 17px; padding-bottom: 14px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.form-group { margin-bottom: 14px; }
label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 12.5px; color: var(--text-muted); }
input, select {
    width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    box-sizing: border-box; font-size: 14px; background: var(--input-bg); color: var(--text);
    transition: border-color .15s, box-shadow .15s, background .15s;
}
input:hover, select:hover { border-color: var(--text-muted); }
input:focus, select:focus {
    outline: none; border-color: var(--primary); background: var(--input-focus-bg);
    box-shadow: 0 0 0 3px var(--focus-ring);
}
.checkbox-group { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: var(--head-bg); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.checkbox-group input[type="checkbox"] { width: auto; accent-color: var(--primary); cursor: pointer; }
.hidden { display: none !important; }
button {
    width: 100%; padding: 11px; background: var(--primary); color: white; border: none;
    border-radius: var(--radius-sm); cursor: pointer; font-size: 14px; font-weight: 600;
    transition: background .15s, transform .05s, box-shadow .15s;
    box-shadow: 0 1px 2px rgba(58,95,224,0.25);
}
button:hover { filter: brightness(0.92); }
button:active { transform: translateY(1px); }
button:disabled { opacity: .6; cursor: not-allowed; }
.btn-small { padding: 6px 10px; font-size: 12px; width: auto; box-shadow: none; font-weight: 600; }
.btn-delete { background: var(--danger); }
.btn-save { background: #16a34a; margin-top: 10px; }
.btn-sub { background: var(--kart); }
.btn-secondary { background: var(--nakit); }

table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { padding: 11px 10px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
th { background: var(--head-bg); color: var(--text-muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.4px; font-weight: 700; position: sticky; top: 0; }
tbody tr { transition: background .1s; }
tbody tr:hover { background: var(--hover-bg); }

.badge { padding: 4px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; color: white; display: inline-block; letter-spacing: 0.2px; }
.b-yemek { background-color: var(--yemek); }
.b-taksit { background-color: var(--taksit); } .b-abonelik { background-color: var(--abonelik); } .b-nakit { background-color: var(--nakit); }

.summary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; }
.summary-box {
    background: var(--input-bg); padding: 16px; border-radius: var(--radius-sm); border: 1px solid var(--border);
    text-align: center; font-size: 13px; color: var(--text-muted); font-weight: 600;
    transition: box-shadow .15s, transform .15s;
}
.summary-box:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.summary-box span { display: block; font-size: 19px; font-weight: 800; margin-top: 6px; color: var(--primary); letter-spacing: -0.3px; }
.summary-box small { font-weight: 500; }

.budget-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.sub-list-item {
    display: flex; justify-content: space-between; align-items: center; padding: 10px 12px;
    background: var(--input-bg); border: 1px solid var(--border); margin-bottom: 6px; border-radius: var(--radius-sm); font-size: 12px;
}

.filter-panel {
    display: flex; flex-direction: column; gap: 12px; background: var(--surface);
    padding: 16px 18px; border-radius: var(--radius); border: 1px solid var(--border);
    box-shadow: var(--shadow); margin-bottom: 20px;
}
.filter-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.filter-title { font-weight: 700; font-size: 12.5px; color: var(--text); min-width: 130px; text-transform: uppercase; letter-spacing: 0.3px; }
.filter-label { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; font-weight: 500; color: var(--text); }
.filter-label input[type="checkbox"] { width: auto; cursor: pointer; margin: 0; accent-color: var(--primary); }
.filter-divider { border-top: 1px solid var(--border); width: 100%; margin: 0; }

.modal-backdrop {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--modal-backdrop);
    backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; z-index: 2000;
}
.modal-content {
    background: var(--surface); padding: 26px; border-radius: 14px; width: 440px; max-width: 95%;
    box-shadow: var(--shadow-lg); position: relative; border: 1px solid var(--border);
}
.modal-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 22px; gap: 10px; }
.modal-buttons-right { display: flex; gap: 10px; }

.uye-rozet { display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; color: white; }

.hata-mesaji {
    background: var(--danger-soft-bg); border: 1px solid var(--danger-soft-border); color: var(--danger-soft-text);
    padding: 10px 12px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 14px;
}
.basari-mesaji {
    background: var(--success-soft-bg); border: 1px solid var(--success-soft-border); color: var(--success-soft-text);
    padding: 10px 12px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 14px;
}
.bilgi-notu { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.bos-durum { text-align: center; color: var(--text-muted); padding: 30px 10px; font-size: 13px; }

.sekme-btn { background: transparent; color: var(--text-muted); box-shadow: none; border: 1px solid var(--border); border-bottom: none; }
.sekme-btn.aktif { background: var(--surface); color: var(--primary); font-weight: 700; }
.sekme-btn:hover { filter: none; background: var(--hover-bg); }
.sekme-btn.aktif:hover { background: var(--surface); }

@media (max-width: 960px) {
    .container { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .budget-inputs { grid-template-columns: 1fr; }
    body { padding: 0 14px 14px; }
}