/* ============================================================
   KotgemFlow — Tasarım Sistemi
   Marka: lacivert (#0E1E30) + parlak mavi gradyan (#2684FF→#4FB0FF)
   ============================================================ */

:root {
    /* Marka renkleri */
    --marka-lacivert-900: #0B1626;
    --marka-lacivert-800: #0E1E30;
    --marka-lacivert-700: #13293f;
    --marka-mavi-600: #1B6FE0;
    --marka-mavi-500: #2684FF;
    --marka-mavi-400: #4FB0FF;
    --marka-gradyan: linear-gradient(135deg, #1E5FCC 0%, #2684FF 45%, #4FB0FF 100%);

    /* Nötr */
    --yuzey: #f4f7fb;
    --kart: #ffffff;
    --kenar: #e3e9f2;
    --metin: #0E1E30;
    --metin-soluk: #5b6b7b;
    --metin-cok-soluk: #8a97a6;

    /* Durum */
    --basari: #1c9d6b;
    --basari-bg: #e6f6ef;
    --uyari: #d9822b;
    --uyari-bg: #fdf1e3;
    --hata: #d64545;
    --hata-bg: #fdecec;

    /* Ölçü */
    --yaricap: 12px;
    --yaricap-sm: 8px;
    --golge-sm: 0 1px 2px rgba(14, 30, 48, .06), 0 1px 3px rgba(14, 30, 48, .04);
    --golge: 0 4px 12px rgba(14, 30, 48, .08);
    --golge-lg: 0 12px 32px rgba(14, 30, 48, .14);
    --kenar-cubugu-genislik: 248px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
    background: var(--yuzey);
    color: var(--metin);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { color: var(--metin); margin: 0 0 .4rem; font-weight: 600; }
a { color: var(--marka-mavi-600); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Uygulama iskeleti ---------- */
.uygulama {
    display: grid;
    grid-template-columns: var(--kenar-cubugu-genislik) 1fr;
    min-height: 100vh;
}

/* ---------- Kenar çubuğu ---------- */
.kenar-cubugu {
    background: var(--marka-lacivert-800);
    color: #cdd8e6;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}

.kenar-cubugu .marka {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: 1.1rem 1.1rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.kenar-cubugu .marka img { height: 30px; }
.kenar-cubugu .marka .ad { font-weight: 700; font-size: 1.02rem; color: #fff; letter-spacing: .2px; }
.kenar-cubugu .marka .ad b { color: var(--marka-mavi-400); font-weight: 700; }

.kenar-cubugu nav { padding: .8rem .6rem; display: flex; flex-direction: column; gap: 2px; }
.kenar-cubugu nav .grup-baslik {
    font-size: .68rem; text-transform: uppercase; letter-spacing: .8px;
    color: #6b7c90; padding: .9rem .8rem .35rem;
}
.nav-oge {
    display: flex; align-items: center; gap: .7rem;
    padding: .6rem .8rem; border-radius: var(--yaricap-sm);
    color: #b8c5d6; font-weight: 500; cursor: pointer;
    border: none; background: none; width: 100%; text-align: left; font-size: .9rem;
}
.nav-oge:hover { background: rgba(255, 255, 255, .06); color: #fff; text-decoration: none; }
.nav-oge.active { background: var(--marka-gradyan); color: #fff; box-shadow: 0 4px 12px rgba(38, 132, 255, .35); }
.nav-oge .ikon { width: 18px; height: 18px; flex: 0 0 18px; opacity: .9; }

.kenar-cubugu .alt {
    margin-top: auto; padding: .9rem 1.1rem;
    border-top: 1px solid rgba(255, 255, 255, .07);
    font-size: .72rem; color: #6b7c90;
}

/* ---------- Üst çubuk ---------- */
.icerik { display: flex; flex-direction: column; min-width: 0; }
.ust-cubuk {
    height: 62px; background: var(--kart);
    border-bottom: 1px solid var(--kenar);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 1.5rem; position: sticky; top: 0; z-index: 10;
}
.ust-cubuk .sayfa-baslik { font-size: 1.05rem; font-weight: 600; }
.ust-cubuk .sag { display: flex; align-items: center; gap: 1rem; }

.firma-secici {
    display: flex; align-items: center; gap: .5rem;
    padding: .4rem .7rem; border: 1px solid var(--kenar);
    border-radius: var(--yaricap-sm); background: var(--yuzey);
    font-size: .85rem; font-weight: 500; cursor: pointer;
}
.kullanici-rozet {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--marka-gradyan); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: .85rem;
}

.sayfa { padding: 1.5rem; flex: 1; }

/* ---------- Kartlar ---------- */
.kart {
    background: var(--kart); border: 1px solid var(--kenar);
    border-radius: var(--yaricap); box-shadow: var(--golge-sm);
}
.kart-govde { padding: 1.2rem 1.3rem; }

.istatistik-satir {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem; margin-bottom: 1.4rem;
}
.istatistik {
    background: var(--kart); border: 1px solid var(--kenar);
    border-radius: var(--yaricap); padding: 1.1rem 1.2rem;
    box-shadow: var(--golge-sm); position: relative; overflow: hidden;
}
.istatistik::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    background: var(--marka-gradyan);
}
.istatistik .etiket { color: var(--metin-soluk); font-size: .8rem; font-weight: 500; }
.istatistik .deger { font-size: 1.7rem; font-weight: 700; margin-top: .3rem; letter-spacing: -.5px; }
.istatistik .alt { font-size: .76rem; color: var(--metin-cok-soluk); margin-top: .2rem; }

/* ---------- Tablo ---------- */
.tablo-sar { overflow-x: auto; }
table.veri { width: 100%; border-collapse: collapse; font-size: .875rem; }
table.veri thead th {
    text-align: left; padding: .7rem .9rem; color: var(--metin-soluk);
    font-weight: 600; font-size: .74rem; text-transform: uppercase; letter-spacing: .4px;
    border-bottom: 1px solid var(--kenar); background: #fafcff; position: sticky; top: 0;
}
table.veri tbody td { padding: .7rem .9rem; border-bottom: 1px solid var(--kenar); }
table.veri tbody tr:hover { background: #f7faff; }
table.veri .sagli { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Rozetler / düğmeler ---------- */
.rozet {
    display: inline-flex; align-items: center; gap: .35rem;
    padding: .2rem .55rem; border-radius: 999px; font-size: .74rem; font-weight: 600;
}
.rozet.basari { background: var(--basari-bg); color: var(--basari); }
.rozet.uyari { background: var(--uyari-bg); color: var(--uyari); }
.rozet.hata { background: var(--hata-bg); color: var(--hata); }

.dugme {
    display: inline-flex; align-items: center; gap: .5rem;
    padding: .55rem 1rem; border-radius: var(--yaricap-sm);
    border: 1px solid transparent; font-weight: 600; font-size: .875rem;
    cursor: pointer; transition: filter .15s, box-shadow .15s;
}
.dugme.birincil { background: var(--marka-gradyan); color: #fff; box-shadow: 0 4px 12px rgba(38, 132, 255, .3); }
.dugme.birincil:hover { filter: brightness(1.05); }
.dugme.ikincil { background: var(--kart); border-color: var(--kenar); color: var(--metin); }
.dugme.ikincil:hover { background: var(--yuzey); }

/* ---------- Giriş ekranı ---------- */
.giris-sayfa {
    min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr;
}
.giris-gorsel {
    background: var(--marka-lacivert-800);
    background-image: radial-gradient(circle at 30% 20%, rgba(38, 132, 255, .25), transparent 55%),
                      radial-gradient(circle at 80% 80%, rgba(79, 176, 255, .18), transparent 50%);
    color: #fff; display: flex; flex-direction: column; justify-content: center;
    padding: 4rem; gap: 1.2rem;
}
.giris-gorsel img { height: 54px; align-self: flex-start; }
.giris-gorsel h1 { color: #fff; font-size: 2rem; line-height: 1.2; max-width: 420px; }
.giris-gorsel p { color: #9fb2c9; max-width: 420px; line-height: 1.6; }
.giris-gorsel .slogan { font-size: .72rem; letter-spacing: 2px; text-transform: uppercase; color: var(--marka-mavi-400); font-weight: 600; }

.giris-form-alan { display: flex; align-items: center; justify-content: center; padding: 2rem; }
.giris-kart { width: 100%; max-width: 380px; }
.giris-kart h2 { font-size: 1.4rem; }
.giris-kart .alt-yazi { color: var(--metin-soluk); margin-bottom: 1.6rem; }

.form-grup { margin-bottom: 1.1rem; }
.form-grup label { display: block; font-weight: 600; font-size: .82rem; margin-bottom: .4rem; color: var(--metin); }
.form-girdi {
    width: 100%; padding: .7rem .85rem; border: 1px solid var(--kenar);
    border-radius: var(--yaricap-sm); font-size: .9rem; background: #fff; color: var(--metin);
}
.form-girdi:focus { outline: none; border-color: var(--marka-mavi-500); box-shadow: 0 0 0 3px rgba(38, 132, 255, .15); }

.otp-kutular { display: flex; gap: .6rem; justify-content: space-between; }
.otp-kutular input {
    width: 48px; height: 56px; text-align: center; font-size: 1.4rem; font-weight: 700;
    border: 1px solid var(--kenar); border-radius: var(--yaricap-sm);
}
.otp-kutular input:focus { outline: none; border-color: var(--marka-mavi-500); box-shadow: 0 0 0 3px rgba(38, 132, 255, .15); }

@media (max-width: 900px) {
    .uygulama { grid-template-columns: 1fr; }
    .kenar-cubugu { position: fixed; z-index: 100; transform: translateX(-100%); transition: transform .2s; }
    .giris-sayfa { grid-template-columns: 1fr; }
    .giris-gorsel { display: none; }
}

/* Blazor hata arayüzü */
#blazor-error-ui {
    background: #fff3cd; bottom: 0; box-shadow: var(--golge); display: none;
    left: 0; padding: .6rem 1.25rem; position: fixed; width: 100%; z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: .75rem; top: .5rem; }
.blazor-error-boundary { background: var(--hata); padding: 1rem; color: white; }