/* ==========================================================================
   ARSİTEM — Tasarım Sistemi v3 (Premium Storefront)
   Koyu lacivert sahne + alışverişe iten turuncu CTA + altın vurgular.
   Fonksiyonel yapı korunur; karakter ve derinlik eklenir.
   ========================================================================== */

/* ---- 1. Token'lar ------------------------------------------------------ */
:root {
    /* Açık zemin (içerik) */
    --ink:        #191C26;
    --ink-soft:   #555A6E;
    --ink-faint:  #8B90A3;

    --bg:         #FFFFFF;
    --bg-subtle:  #F5F6F8;
    --surface:    #FFFFFF;
    --line:       #E6E7EC;
    --line-strong:#CDD0DA;

    /* Koyu sahne (header, hero, footer) */
    --dark:       #0D1020;
    --dark-2:     #141930;
    --dark-3:     #1C2340;
    --dark-line:  rgba(255, 255, 255, 0.09);
    --dark-text:  #EDEEF5;
    --dark-muted: #9BA0B8;

    /* Aksiyon rengi — sıcak turuncu (satın aldıran renk) */
    --accent:       #FF5A1F;
    --accent-hover: #E84A12;
    --accent-press: #C93D0C;
    --accent-soft:  rgba(255, 90, 31, 0.09);
    --accent-ring:  rgba(255, 90, 31, 0.30);
    --accent-glow:  rgba(255, 90, 31, 0.18);

    /* Destek renkleri */
    --gold:    #FFB020;
    --success: #12B76A;
    --warning: #F59E0B;
    --danger:  #EF4444;
    --info:    #3B82F6;

    --font-display: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 0.9688rem;
    --text-lg:   1.125rem;
    --text-xl:   1.375rem;
    --text-2xl:  1.75rem;
    --text-3xl:  2.25rem;
    --text-4xl:  3rem;
    --text-5xl:  3.5rem;

    --radius-sm: 8px;
    --radius:    10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 999px;

    --shadow-xs: 0 1px 2px rgba(13, 16, 32, 0.06);
    --shadow-sm: 0 2px 6px rgba(13, 16, 32, 0.08);
    --shadow-md: 0 6px 20px rgba(13, 16, 32, 0.10);
    --shadow-lg: 0 16px 44px rgba(13, 16, 32, 0.16);
    --shadow-accent: 0 8px 24px var(--accent-glow);

    --container: 1280px;
    --container-narrow: 800px;
    --header-h: 62px;

    --ease: cubic-bezier(0.25, 0.8, 0.35, 1);
    --dur: 0.18s;
}

/* ---- 2. Temel ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: clip; /* mobilde yatay taşma koruması */
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 0.45em;
    color: var(--ink);
}

h1 { font-size: clamp(2rem, 4.5vw, var(--text-4xl)); }
h2 { font-size: clamp(1.5rem, 2.6vw, var(--text-2xl)); }
h3 { font-size: var(--text-lg); }

p { margin: 0 0 1rem; }

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

::selection { background: var(--accent); color: #fff; }

/* ---- 3. Düzen ---------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: 24px;
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: 48px; }
.section--subtle { background: var(--bg-subtle); }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

.lead {
    font-size: var(--text-lg);
    color: var(--ink-soft);
    line-height: 1.6;
}

.text-muted { color: var(--ink-soft); }

/* ---- 4. Butonlar ------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 700;
    line-height: 1;
    padding: 12px 20px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform var(--dur) var(--ease),
                background-color var(--dur) var(--ease),
                border-color var(--dur) var(--ease),
                box-shadow var(--dur) var(--ease),
                color var(--dur) var(--ease);
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

/* Turuncu gradient — birincil aksiyon (satın al) */
.btn-primary {
    background: linear-gradient(135deg, #FF7A2F, #FF3D2E);
    color: #fff;
    box-shadow: var(--shadow-accent);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); box-shadow: 0 12px 30px var(--accent-glow); }

.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }

.btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--bg-subtle); }

/* Koyu zemin üstünde hayalet buton */
.btn-ghost-light {
    background: transparent;
    color: var(--dark-text);
    border-color: rgba(255,255,255,0.25);
}
.btn-ghost-light:hover { border-color: #fff; background: rgba(255,255,255,0.06); color: #fff; }

.btn-sm { padding: 8px 13px; font-size: var(--text-xs); }
.btn-lg { padding: 15px 26px; font-size: var(--text-base); }
.btn-block { width: 100%; }

/* ---- 5. Rozetler ------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: var(--accent-soft);
    color: var(--accent);
}
.badge-sale { background: var(--accent); color: #fff; }
.badge-gold { background: rgba(255, 176, 32, 0.14); color: #B87700; }
.badge-neutral { background: var(--bg-subtle); color: var(--ink-soft); border: 1px solid var(--line); }

/* ---- 6. Kartlar -------------------------------------------------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--dur) var(--ease),
                box-shadow var(--dur) var(--ease),
                border-color var(--dur) var(--ease);
}
.card:hover {
    transform: translateY(-3px);
    border-color: transparent;
    box-shadow: var(--shadow-lg);
}

/* ---- 7. Grid ----------------------------------------------------------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 980px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---- 8. Yardımcılar ---------------------------------------------------- */
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.stack-sm > * + * { margin-top: 10px; }
.stack > * + * { margin-top: 18px; }
.cluster { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.max-60ch { max-width: 60ch; }