:root {
    /* Onaylanan kurumsal palet: lacivert ana renk, antrasit gri ikincil, kırmızı sadece uyarı */
    --renk-ana: #2452FF;
    --renk-ana-acik: #1638C7;
    --renk-ana-soluk: #E8EDFF;
    --renk-ana-soluk2: #C7D4FF;

    --renk-gri: #3A4256;
    --renk-gri-acik: #8B95AB;

    --renk-uyari: #DC2626;
    --renk-uyari-zemin: #FEE2E2;
    --renk-uyari-koyu: #7F1D1D;
    --renk-uyari-orta: #B91C1C;

    --renk-basarili: #16A34A;
    --renk-basarili-zemin: #DCFCE7;

    --bg-zemin: #F3F6FF;
    --bg-yuzey: #FFFFFF;
    --bg-kart: #F3F6FF;

    --metin-ana: #0F1A33;
    --metin-ikincil: #5C6B85;
    --metin-soluk: #8B95AB;

    --border: rgba(15, 26, 51, 0.10);
    --border-orta: rgba(15, 26, 51, 0.18);

    --radius-md: 10px;
    --radius-lg: 16px;

    --shadow: 0 4px 16px rgba(15, 26, 51, 0.06);
    --shadow-lg: 0 12px 32px rgba(36, 82, 255, 0.14);

    --renk-vurgu: #00BFA6;

    --font-sans: 'Public Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    background: var(--bg-zemin);
    color: var(--metin-ana);
    -webkit-tap-highlight-color: transparent;
}

body {
    font-size: 14px;
    line-height: 1.5;
    padding-bottom: 64px; /* alt navigasyon icin yer */
}

a {
    color: var(--renk-ana);
    text-decoration: none;
}

/* --- Ust baslik --- */
.app-header {
    background: linear-gradient(135deg, var(--renk-ana), var(--renk-ana-acik));
    color: var(--renk-ana-soluk);
    padding: 14px 16px;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 4px 16px rgba(36,82,255,0.16);
}

.app-header .baslik-satir {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-header .baslik {
    font-size: 14px;
    font-weight: 500;
}

.app-header .alt-baslik {
    font-size: 12px;
    color: var(--renk-ana-soluk2);
    margin-top: 2px;
}

.app-header .geri-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--renk-ana-soluk);
    background: none;
    border: none;
    font-size: 14px;
    font-weight: 500;
    padding: 0;
    cursor: pointer;
}

.rozet {
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.rozet-acil {
    background: var(--renk-uyari-zemin);
    color: var(--renk-uyari-koyu);
}

.rozet-tamamlandi {
    background: var(--renk-basarili-zemin);
    color: var(--renk-basarili);
}

.rozet-bekliyor {
    background: var(--bg-kart);
    color: var(--metin-ikincil);
    border: 0.5px solid var(--border);
}

.rozet-bilgi {
    background: var(--renk-ana-soluk);
    color: var(--renk-ana-acik);
}

/* --- Ana icerik --- */
.icerik {
    padding: 14px 16px;
}

.bolum-baslik {
    font-size: 12px;
    font-weight: 500;
    color: var(--metin-ikincil);
    margin-bottom: 8px;
}

/* --- Kart --- */
.kart {
    background: var(--bg-yuzey);
    border: 0.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 13px 14px;
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    transition: box-shadow .15s ease;
}

.kart.tiklanabilir {
    cursor: pointer;
}

.kart.tiklanabilir:active {
    box-shadow: none;
}

.kart.tamamlandi {
    opacity: 0.6;
    box-shadow: none;
}

.kart.acil {
    border-color: rgba(220,38,38,0.25);
    background: var(--renk-uyari-zemin);
    box-shadow: 0 4px 14px rgba(220,38,38,0.10);
}

.kart.acil .kart-baslik {
    color: var(--renk-uyari-koyu);
}

.kart.acil .kart-alt {
    color: var(--renk-uyari-orta);
}

.kart-ust {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.kart-baslik {
    font-size: 14px;
    font-weight: 500;
    margin: 0;
}

.kart-alt {
    font-size: 12px;
    color: var(--metin-ikincil);
    margin: 2px 0 0;
}

.kart-satir {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--metin-ikincil);
}

/* --- Form elemanlari --- */
.alan-grup {
    margin-bottom: 14px;
}

.iki-kolon {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

label {
    display: block;
    font-size: 12px;
    color: var(--metin-ikincil);
    margin-bottom: 4px;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="tel"],
select,
textarea {
    width: 100%;
    font-size: 14px;
    padding: 8px 10px;
    border: 0.5px solid var(--border-orta);
    border-radius: var(--radius-md);
    background: var(--bg-yuzey);
    color: var(--metin-ana);
    font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--renk-ana);
    box-shadow: 0 0 0 2px var(--renk-ana-soluk);
}

textarea {
    min-height: 60px;
    resize: vertical;
}

.checkbox-satir {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    padding: 4px 0;
}

.checkbox-satir input {
    width: auto;
}

.fotograf-alani {
    aspect-ratio: 1;
    border: 1.5px dashed var(--border-orta);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--metin-soluk);
    font-size: 11px;
    background: var(--bg-kart);
    overflow: hidden;
    position: relative;
}

.fotograf-alani img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.fotograf-alani input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* --- Butonlar --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    font-size: 14px;
    font-weight: 500;
    padding: 12px;
    border-radius: var(--radius-md);
    border: 0.5px solid var(--border-orta);
    background: var(--bg-yuzey);
    color: var(--metin-ana);
    cursor: pointer;
    font-family: inherit;
}

.btn:active {
    transform: scale(0.98);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-birincil {
    background: linear-gradient(135deg, var(--renk-ana), var(--renk-ana-acik));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 6px 16px rgba(36,82,255,0.22);
}

.btn-ikincil {
    background: var(--bg-yuzey);
    color: var(--metin-ana);
}

.btn-kucuk {
    padding: 8px;
    font-size: 13px;
}

/* --- Alt navigasyon --- */
.alt-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: var(--bg-yuzey);
    border-top: 0.5px solid var(--border);
    box-shadow: 0 -4px 16px rgba(15,26,51,0.05);
    padding: 8px 0;
    max-width: 480px;
    margin: 0 auto;
}

.alt-nav-ogesi {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 4px 14px;
    color: var(--metin-ikincil);
    text-decoration: none;
    border-radius: 20px;
    font-size: 10px;
    transition: background .15s ease, color .15s ease;
}

.alt-nav-ogesi.aktif {
    color: var(--renk-ana);
    background: var(--renk-ana-soluk);
    font-weight: 600;
}

.alt-nav-ogesi svg {
    width: 20px;
    height: 20px;
}

/* --- Genel sayfa kapsayici --- */
.sayfa {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    background: var(--bg-zemin);
}

/* --- Durum mesajlari --- */
.mesaj {
    padding: 11px 13px;
    border-radius: var(--radius-lg);
    font-size: 13px;
    margin-bottom: 12px;
    font-weight: 500;
}

.mesaj-hata {
    background: var(--renk-uyari-zemin);
    color: var(--renk-uyari-koyu);
}

.mesaj-basarili {
    background: var(--renk-basarili-zemin);
    color: var(--renk-basarili);
}

.bos-durum {
    text-align: center;
    padding: 40px 16px;
    color: var(--metin-ikincil);
    font-size: 13px;
}

/* --- OTP kod kutulari --- */
.otp-kutular {
    display: flex;
    gap: 8px;
}

.otp-kutular input {
    text-align: center;
    font-size: 18px;
    font-weight: 500;
    padding: 8px;
}

/* --- Offline gosterge --- */
.offline-gosterge {
    background: var(--renk-gri-acik);
    color: var(--bg-yuzey);
    font-size: 12px;
    text-align: center;
    padding: 6px;
    display: none;
}

.offline-gosterge.gorunur {
    display: block;
}