:root {
    --yesil-50: #ecfdf5;
    --yesil-100: #dcfce7;
    --yesil-200: #bbf7d0;
    --yesil-600: #16a34a;
    --yesil-700: #15803d;
    --yesil-800: #14532d;
    --teal-700: #0f766e;
    --turuncu-100: #ffedd5;
    --turuncu-800: #9a3412;
    --turuncu-700: #c2410c;
    --mavi-100: #e0f2fe;
    --mavi-800: #075985;
    --mavi-700: #0369a1;
    --sari-300: #fde047;
    --kirmizi-50: #fef2f2;
    --kirmizi-200: #fecaca;
    --kirmizi-700: #b91c1c;
    --kirmizi-800: #991b1b;
    --beyaz: #ffffff;
    --notr-100: #f1f5f9;
    --notr-200: #e2e8f0;
    --notr-300: #cbd5e1;
    --notr-500: #64748b;
    --notr-700: #334155;
    --notr-900: #0f172a;
    --s1: 8px;
    --s2: 16px;
    --s3: 24px;
    --s4: 32px;
    --golge: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px -12px rgba(15, 118, 110, 0.18);
    --golge-buyuk: 0 20px 40px -16px rgba(15, 23, 42, 0.28);
    --gradyan-marka: linear-gradient(135deg, #0f766e 0%, #15803d 55%, #65a30d 100%);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--notr-900);
    background: linear-gradient(180deg, #ecfdf5 0%, #f0fdfa 45%, #fff7ed 100%) fixed;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    line-height: 1.2;
    margin: 0 0 var(--s1);
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--notr-900);
}

h1 { font-size: 28px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; font-weight: 600; }
p { margin: 0 0 var(--s2); }

a {
    color: var(--yesil-800);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

:focus-visible {
    outline: 3px solid #facc15;
    outline-offset: 2px;
}

.kap {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 var(--s2);
}

.icerik {
    flex: 1;
    width: 100%;
    padding-top: var(--s3);
    padding-bottom: var(--s4);
}

/* Ust gezinme */
.ust-bar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: linear-gradient(90deg, #0b4f47 0%, #0f766e 50%, #15803d 100%);
    box-shadow: 0 4px 16px -6px rgba(11, 79, 71, 0.5);
}

.ust-ic {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
}

.marka {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 16px;
    color: var(--beyaz);
}

.marka:hover {
    text-decoration: none;
}

.marka-ikon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--sari-300);
    color: var(--yesil-800);
    font-size: 13px;
    font-weight: 700;
    box-shadow: 0 6px 14px -6px rgba(0, 0, 0, 0.4);
}

.menu-dugme {
    min-height: 40px;
    padding: 8px 16px;
    border: 0;
    border-radius: 10px;
    background: var(--beyaz);
    color: var(--yesil-800);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 4px;
    padding: var(--s1) var(--s2) var(--s2);
    background: #0b4f47;
    box-shadow: var(--golge-buyuk);
}

.nav.acik {
    display: flex;
}

.nav a {
    padding: 12px var(--s2);
    border-radius: 10px;
    color: #ecfdf5;
    font-weight: 600;
    font-size: 15px;
    transition: background 0.15s ease, color 0.15s ease;
}

.nav a:hover,
.nav a:focus-visible {
    background: rgba(255, 255, 255, 0.14);
    color: var(--beyaz);
    text-decoration: none;
}

.nav a.aktif {
    background: var(--sari-300);
    color: var(--yesil-800);
}

.nav .nav-cikis {
    margin-top: var(--s1);
    color: #fecaca;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 0 0 10px 10px;
}

.alt-bar {
    padding: var(--s2) 0;
    color: var(--yesil-800);
    font-size: 13px;
    font-weight: 600;
    text-align: center;
}

/* Kartlar */
.kart {
    position: relative;
    background: var(--beyaz);
    border: 1px solid rgba(15, 118, 110, 0.08);
    border-radius: 16px;
    padding: var(--s3);
    box-shadow: var(--golge);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
    animation: yukari-kayma 0.35s ease both;
    overflow: hidden;
}

.kart::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #15803d, #65a30d 50%, #f97316);
}

.kart:hover {
    box-shadow: var(--golge-buyuk);
    transform: translateY(-2px);
}

.kart > h2 {
    padding-bottom: var(--s2);
    margin-bottom: var(--s2);
    border-bottom: 1px solid var(--notr-200);
}

.bolum {
    margin-bottom: var(--s3);
}

@keyframes yukari-kayma {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.liste {
    display: grid;
    gap: var(--s2);
}

.iki-kolon {
    display: grid;
    gap: var(--s3);
}

/* Istatistik kartlari */
.istatistikler {
    display: grid;
    gap: var(--s2);
    margin-bottom: var(--s3);
}

.istatistik {
    padding: var(--s3);
    border-radius: 16px;
    color: var(--beyaz);
    box-shadow: var(--golge-buyuk);
    background: linear-gradient(135deg, #15803d, #16a34a);
}

.istatistik:nth-child(2) {
    background: linear-gradient(135deg, #c2410c, #ea580c);
}

.istatistik:nth-child(3) {
    background: linear-gradient(135deg, #0369a1, #0284c7);
}

.istatistik-etiket {
    margin: 0 0 4px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.istatistik-deger {
    margin: 0;
    font-size: 36px;
    font-weight: 700;
    line-height: 1.1;
}

/* Sayfa basligi (renkli banner) */
.baslik-satir {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--s2);
    margin-bottom: var(--s3);
    padding: var(--s4) var(--s3);
    border-radius: 20px;
    background: var(--gradyan-marka);
    color: var(--beyaz);
    box-shadow: var(--golge-buyuk);
    overflow: hidden;
}

.baslik-satir::after {
    content: "";
    position: absolute;
    right: -60px;
    top: -60px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(253, 224, 71, 0.18);
    pointer-events: none;
}

.baslik-satir h1 {
    color: var(--beyaz);
    margin-bottom: 4px;
}

.baslik-satir p {
    margin: 0;
    color: rgba(255, 255, 255, 0.92);
}

.baslik-satir .rozet {
    background: var(--beyaz);
    color: var(--yesil-800);
}

.baslik-satir .geri-link {
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 8px;
}

.etiket {
    margin: 0 0 4px;
    font-size: 13px;
    font-weight: 700;
    color: #fde68a;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.baslik-satir .etiket {
    color: var(--sari-300);
}

.aciklama {
    color: var(--notr-500);
}

.ipucu {
    display: block;
    margin-top: 4px;
    color: var(--notr-500);
    font-size: 13px;
}

.geri-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
}

.rozet {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--yesil-100);
    color: var(--yesil-800);
    font-size: 13px;
    font-weight: 700;
}

.rozet.turuncu {
    background: var(--turuncu-100);
    color: var(--turuncu-800);
}

.rozet.mavi {
    background: var(--mavi-100);
    color: var(--mavi-800);
}

.no-rozet {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 28px;
    padding: 0 8px;
    border-radius: 8px;
    background: var(--turuncu-100);
    color: var(--turuncu-800);
    font-size: 13px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.durum {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
}

.durum::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.durum.aktif {
    background: var(--yesil-100);
    color: var(--yesil-800);
}

.durum.pasif {
    background: var(--notr-200);
    color: var(--notr-700);
}

.ekran-disi {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

/* Sekmeler */
.sekmeler {
    display: flex;
    gap: 6px;
    padding: 6px;
    margin-bottom: var(--s3);
    background: var(--beyaz);
    border-radius: 14px;
    box-shadow: var(--golge);
}

.sekmeler a {
    flex: 1;
    text-align: center;
    padding: 12px var(--s1);
    border-radius: 10px;
    color: var(--notr-700);
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.sekmeler a:hover {
    text-decoration: none;
    background: var(--notr-100);
    color: var(--notr-900);
}

.sekmeler a.aktif {
    background: var(--gradyan-marka);
    color: var(--beyaz);
    box-shadow: 0 8px 16px -8px rgba(15, 118, 110, 0.6);
}

/* Antrenman ve video */
.antrenman-ust {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--s1);
    margin-bottom: var(--s2);
}

.antrenman-ust h2 {
    margin: 0;
}

.not {
    padding: var(--s2);
    background: #fff7ed;
    border-left: 4px solid #f97316;
    border-radius: 10px;
    color: var(--notr-900);
}

.video-kap {
    position: relative;
    width: 100%;
    margin-bottom: var(--s2);
    background: var(--notr-900);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 24px -14px rgba(15, 23, 42, 0.6);
}

.video-kap video {
    display: block;
    width: 100%;
    max-height: 70vh;
    border: 0;
}

.bos-durum {
    text-align: center;
    color: var(--notr-500);
}

/* Giris ekrani */
.alan-giris .icerik {
    padding: 0;
}

.alan-giris .kap {
    max-width: none;
    padding: 0;
}

.giris-sahne {
    min-height: calc(100vh - 120px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--s3);
    background-color: #0b4f47;
    background-image:
        linear-gradient(120deg, rgba(11, 79, 71, 0.92) 0%, rgba(21, 128, 61, 0.78) 60%, rgba(249, 115, 22, 0.55) 100%),
        var(--arka-gorsel);
    background-size: cover;
    background-position: center;
}

.giris-sahne-ic {
    display: grid;
    gap: var(--s3);
    width: 100%;
    max-width: 960px;
    align-items: center;
}

.giris-tanitim {
    color: var(--beyaz);
}

.giris-tanitim h1 {
    color: var(--beyaz);
    font-size: 34px;
    margin: var(--s2) 0 var(--s1);
}

.giris-tanitim p {
    color: rgba(255, 255, 255, 0.92);
    font-size: 17px;
    max-width: 440px;
}

.giris-kart {
    background: var(--beyaz);
    border-radius: 20px;
    padding: var(--s4) var(--s3);
    box-shadow: var(--golge-buyuk);
    width: 100%;
    max-width: 420px;
    justify-self: center;
    animation: yukari-kayma 0.45s ease both;
}

.giris-kart h1 {
    font-size: 24px;
}

.giris-kutu {
    max-width: 460px;
    margin: 0 auto;
}

/* Formlar */
.alan {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: var(--s2);
}

.alan label,
.onay {
    font-weight: 600;
    font-size: 14px;
    color: var(--notr-700);
}

.onay {
    display: flex;
    align-items: center;
    gap: var(--s1);
}

.onay input {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: var(--yesil-700);
}

input,
select,
textarea {
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    font: inherit;
    color: var(--notr-900);
    background: #f8fafc;
    border: 1px solid var(--notr-300);
    border-radius: 10px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

input:hover,
select:hover,
textarea:hover {
    border-color: #94a3b8;
}

input[type="file"] {
    padding: 8px;
    font-size: 14px;
    cursor: pointer;
    background: var(--yesil-50);
    border-style: dashed;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    background: var(--beyaz);
    border-color: var(--yesil-600);
    box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.18);
}

.form-izgara {
    display: grid;
    gap: 0 var(--s2);
}

.alan-tam {
    grid-column: 1 / -1;
}

.form-izgara .alan-tam:last-child {
    margin-top: var(--s1);
}

.satir-butonlar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--s1);
}

/* Butonlar */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--s1);
    min-height: 44px;
    padding: 10px var(--s2);
    border: 1px solid transparent;
    border-radius: 10px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.btn:hover {
    text-decoration: none;
}

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

.btn-blok {
    width: 100%;
}

.btn-kucuk {
    min-height: 36px;
    padding: 6px 12px;
    font-size: 14px;
}

.btn-birincil {
    background: var(--gradyan-marka);
    color: var(--beyaz);
    box-shadow: 0 10px 20px -12px rgba(15, 118, 110, 0.8);
}

.btn-birincil:hover {
    box-shadow: 0 14px 24px -12px rgba(15, 118, 110, 0.9);
    filter: brightness(1.05);
}

.btn-ikincil {
    background: var(--beyaz);
    color: var(--yesil-800);
    border-color: var(--yesil-200);
}

.btn-ikincil:hover {
    background: var(--yesil-50);
}

.btn-tehlike {
    background: var(--beyaz);
    color: var(--kirmizi-700);
    border-color: var(--kirmizi-200);
}

.btn-tehlike:hover {
    background: var(--kirmizi-50);
}

/* Mesajlar */
.mesaj {
    margin-bottom: var(--s3);
    padding: var(--s2);
    border-radius: 12px;
    border: 1px solid transparent;
    font-weight: 600;
    animation: yukari-kayma 0.3s ease both;
}

.mesaj.basari {
    background: var(--yesil-100);
    color: var(--yesil-800);
    border-color: var(--yesil-200);
}

.mesaj.hata {
    background: var(--kirmizi-50);
    color: var(--kirmizi-800);
    border-color: var(--kirmizi-200);
}

/* Tablolar */
.tablo-kap {
    width: 100%;
    overflow-x: auto;
    background: var(--beyaz);
    border-radius: 16px;
    margin-bottom: var(--s3);
    box-shadow: var(--golge);
}

table {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
}

th,
td {
    padding: 14px var(--s2);
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--notr-200);
}

th {
    font-size: 12px;
    font-weight: 700;
    color: var(--teal-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--yesil-50);
}

tbody tr {
    transition: background 0.15s ease;
}

tbody tr:hover {
    background: #f7fee7;
}

tbody tr:last-child td {
    border-bottom: 0;
}

.islemler {
    white-space: nowrap;
    text-align: right;
}

.satir-ici {
    display: inline-block;
    margin: 0 0 0 var(--s1);
}

.dis-baglanti {
    font-weight: 600;
    word-break: break-word;
}

/* Video yukleme penceresi */
.yukleme-katman {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--s2);
    background: rgba(11, 79, 71, 0.55);
    backdrop-filter: blur(4px);
}

.yukleme-katman.acik {
    display: flex;
    animation: solma 0.2s ease both;
}

.yukleme-kutu {
    width: 100%;
    max-width: 440px;
    padding: var(--s4);
    background: var(--beyaz);
    border-radius: 20px;
    box-shadow: var(--golge-buyuk);
    text-align: center;
    animation: yukari-kayma 0.25s ease both;
}

.yukleme-kutu h2 {
    margin-bottom: var(--s1);
}

.yukleme-yuzde {
    margin: var(--s2) 0;
    font-size: 48px;
    font-weight: 700;
    color: var(--yesil-700);
    font-variant-numeric: tabular-nums;
}

.yukleme-kutu .ilerleme {
    margin-bottom: var(--s2);
}

@keyframes solma {
    from { opacity: 0; }
    to { opacity: 1; }
}

.ilerleme {
    height: 12px;
    background: var(--yesil-100);
    border-radius: 999px;
    overflow: hidden;
}

.ilerleme span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, #65a30d, #15803d, #0f766e);
    background-size: 200% 100%;
    border-radius: 999px;
    transition: width 0.25s ease;
    animation: akan-isik 2s linear infinite;
}

@keyframes akan-isik {
    from { background-position: 0% 0; }
    to { background-position: 200% 0; }
}

@media (min-width: 768px) {
    .ust-ic {
        min-height: 72px;
    }

    .menu-dugme {
        display: none;
    }

    .nav {
        position: static;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 4px;
        padding: 0;
        background: transparent;
        box-shadow: none;
    }

    .nav a {
        padding: 8px 14px;
        font-size: 14px;
    }

    .nav .nav-cikis {
        margin: 0 0 0 var(--s2);
        padding: 8px 14px;
        border: 1px solid rgba(254, 202, 202, 0.6);
        border-radius: 10px;
        color: #fecaca;
    }

    .kart {
        padding: var(--s4);
    }

    .baslik-satir {
        padding: var(--s4);
    }

    .istatistikler {
        grid-template-columns: repeat(3, 1fr);
    }

    .form-izgara {
        grid-template-columns: 1fr 1fr;
    }

    .iki-kolon {
        grid-template-columns: minmax(300px, 380px) 1fr;
        align-items: start;
    }

    .giris-sahne-ic {
        grid-template-columns: 1.1fr 0.9fr;
    }

    .giris-tanitim h1 {
        font-size: 44px;
    }

    .kayit {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
        gap: var(--s2);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 24px;
    }

    .baslik-satir {
        padding: var(--s3) var(--s2);
    }

    .kart {
        padding: var(--s2);
    }

    .sekmeler a {
        font-size: 15px;
    }

    .giris-sahne {
        padding: var(--s2);
    }

    .giris-kart {
        padding: var(--s3) var(--s2);
    }

    .yukleme-kutu {
        padding: var(--s3);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}