:root {
    --bg: #0f1117;
    --bg-card: #171a23;
    --bg-inset: #0c0e13;
    --border: #2a2e3a;
    --text: #e6e8ef;
    --text-dim: #9aa0b0;
    --text-on-accent: #14161c;
    --accent: #d4af37;
    --accent-dim: #8a7020;
    --green: #3ecf8e;
    --red: #e5534b;
    --warn-text: #c99a2f;
}

:root[data-theme="light"] {
    --bg: #f5f4f0;
    --bg-card: #ffffff;
    --bg-inset: #eceae3;
    --border: #ddd8cc;
    --text: #201d16;
    --text-dim: #6b6558;
    --text-on-accent: #201d16;
    --accent: #b8891f;
    --accent-dim: #8a6a18;
    --green: #1f8f5f;
    --red: #c73f37;
    --warn-text: #8a6212;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    line-height: 1.5;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    border-bottom: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo {
    height: 40px;
    width: 40px;
    display: block;
}

nav a {
    color: var(--text-dim);
    text-decoration: none;
    margin-left: 20px;
    font-size: 0.95em;
}

nav a:hover { color: var(--text); }

.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 1.2em;
    line-height: 1;
    cursor: pointer;
    padding: 0;
}

.btn-nav {
    background: var(--accent);
    color: var(--text-on-accent) !important;
    padding: 6px 14px;
    border-radius: 6px;
    font-weight: 600;
}

.lang-switch {
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid var(--border);
}

.lang-switch select {
    background: var(--bg-inset);
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.85em;
    width: auto;
    cursor: pointer;
}

.theme-toggle {
    margin-left: 14px;
    background: var(--bg-inset);
    color: var(--text-dim);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.95em;
    line-height: 1;
    cursor: pointer;
}

.theme-toggle:hover {
    color: var(--text);
    background: var(--bg-inset);
}

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 24px;
    min-height: 60vh;
}

footer {
    text-align: center;
    padding: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.85em;
}

.disclaimer {
    color: var(--warn-text);
    max-width: 640px;
    margin: 0 auto 8px;
}

.flash {
    max-width: 960px;
    margin: 16px auto 0;
    padding: 12px 16px;
    background: rgba(62, 207, 142, 0.15);
    border: 1px solid var(--green);
    border-radius: 8px;
    color: var(--green);
}

.flash-error {
    background: rgba(229, 83, 75, 0.15);
    border-color: var(--red);
    color: var(--red);
}

h1 { color: var(--accent); }

.hero-sub {
    color: var(--text-dim);
    font-size: 1.1em;
    max-width: 640px;
    margin-top: -8px;
}

.carousel {
    max-width: 720px;
    margin: 28px auto;
    position: relative;
}

.carousel-track {
    position: relative;
    aspect-ratio: 16 / 10;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-inset);
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.carousel-slide p {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(15, 17, 23, 0.88);
    color: var(--text);
    padding: 10px 16px;
    font-size: 0.9em;
    margin: 0;
    text-align: center;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(12, 14, 19, 0.6);
    color: var(--text);
    border: 1px solid var(--border);
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.3em;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-arrow.prev { left: 10px; }
.carousel-arrow.next { right: 10px; }
.carousel-arrow:hover { background: rgba(212, 175, 55, 0.25); }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
}

.dot.active { background: var(--accent); }

.how-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 18px;
}

.how-step {
    position: relative;
}

.how-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--text-on-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 12px;
}

.how-step h4 {
    margin: 0 0 6px;
    color: var(--text);
}

.how-step p {
    margin: 0;
    color: var(--text-dim);
    font-size: 0.92em;
    line-height: 1.5;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

/* Sabit sutun sayisiyla gruplanmis istatistik satirlari (orn. backtest sonuclari) --
   auto-fit'in degisken satir uzunluklarina gore olusturdugu duzensiz bosluklari
   onlemek icin, her grup kendi satirini tam dolduracak sekilde sabitlenir. */
.stat-grid-4 { grid-template-columns: repeat(4, 1fr); }
.stat-grid-3 { grid-template-columns: repeat(3, 1fr); }

.stat-group-label {
    color: var(--text-dim);
    font-size: 0.78em;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 18px 0 8px;
}
.stat-group-label:first-child { margin-top: 0; }

.stat-tile {
    background: var(--bg-inset);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px 12px;
}

.stat-value {
    font-size: 2em;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    color: var(--text-dim);
    font-size: 0.85em;
    margin-top: 4px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}

.pkg-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 20px;
    max-width: 1160px;
}
.settings-grid .card { max-width: none; }

.pkg-price {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--accent);
}

form { display: flex; flex-direction: column; gap: 12px; max-width: 420px; }

label { font-size: 0.9em; color: var(--text-dim); }

input, select, textarea {
    background: var(--bg-inset);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 1em;
    width: 100%;
}

input[type="checkbox"] { width: auto; }

button, .btn {
    background: var(--accent);
    color: var(--text-on-accent);
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

button:hover, .btn:hover { background: var(--accent-dim); color: var(--text); }

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

table { width: 100%; border-collapse: collapse; margin-top: 12px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 0.9em; }
th { color: var(--text-dim); font-weight: 600; }

.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.8em; font-weight: 600; }
.badge-green { background: rgba(62,207,142,0.15); color: var(--green); }
.badge-red { background: rgba(229,83,75,0.15); color: var(--red); }
.badge-gray { background: rgba(154,160,176,0.15); color: var(--text-dim); }

.warning-banner {
    background: rgba(229, 83, 75, 0.12);
    border: 1px solid var(--red);
    color: #f0a09c;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 16px;
}

/* ---- Giris yapilmis alanlar (dashboard/destek/admin): sabit sidebar + hamburger ---- */
.app-shell { display: flex; min-height: 100vh; }

.app-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    height: 100dvh;
    z-index: 40;
    transition: transform 0.25s ease;
}

.app-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
}

.app-sidebar-brand img { height: 32px; width: 32px; }
.app-sidebar-brand span { color: var(--text); font-weight: 700; }

.app-sidebar nav { position: static; flex: 1 1 auto; min-height: 0; overflow-y: auto; padding: 16px 12px; display: flex; flex-direction: column; gap: 2px; }

.app-sidebar nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: 0;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-dim);
    font-size: 0.92em;
    font-weight: 500;
}

.app-sidebar nav a:hover { background: var(--bg-inset); color: var(--text); }
.app-sidebar nav a.active { background: var(--accent); color: var(--text-on-accent); }

.app-sidebar-footer { padding: 14px 12px; border-top: 1px solid var(--border); }
.app-sidebar-footer a { color: var(--text-dim); font-size: 0.88em; text-decoration: none; padding: 8px 12px; display: block; }
.app-sidebar-footer a:hover { color: var(--red); }

.app-topbar {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    position: sticky;
    top: 0;
    z-index: 30;
}

.hamburger-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    width: 38px;
    height: 38px;
    border-radius: 8px;
    font-size: 1.2em;
    line-height: 1;
    cursor: pointer;
    padding: 0;
}

.app-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 35;
}

.app-main {
    flex: 1;
    margin-left: 240px;
    margin-right: 0;
    max-width: none;
    padding: 32px;
    min-width: 0;
    width: auto;
}
.app-main h1 { margin-top: 0; }
.app-main .pkg-grid { max-width: 1100px; }

.table-wrap { overflow-x: auto; margin-top: 12px; }
.table-wrap table { min-width: 560px; margin-top: 0; }

@media (max-width: 860px) {
    .app-sidebar { transform: translateX(-100%); }
    .app-sidebar.open { transform: translateX(0); }
    .app-sidebar-overlay.open { display: block; }
    .app-topbar { display: flex; }
    .app-main { margin-left: 0; padding: 20px; }
}

@media (max-width: 768px) {
    .topbar { padding: 12px 16px; position: relative; flex-wrap: nowrap; }
    .nav-toggle { display: block; }
    .topbar nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        padding: 8px 16px 16px;
        gap: 4px;
        z-index: 50;
    }
    .topbar nav.open { display: flex; }
    .topbar nav a { margin-left: 0; padding: 10px 4px; border-bottom: 1px solid var(--border); }
    .btn-nav { display: inline-block; width: fit-content; }
    .lang-switch {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--border);
        padding-top: 10px;
        margin-top: 6px;
    }
    .lang-switch select { width: 100%; }
    .theme-toggle { margin-left: 0; margin-top: 6px; width: fit-content; }

    main { padding: 24px 16px; }
    form { max-width: 100%; }
    .card { padding: 18px; }
    .pkg-grid, .stat-grid, .stat-grid-4, .stat-grid-3, .how-grid, .settings-grid { grid-template-columns: 1fr; }
}