:root {
    /* Tema: lacivert / ardıç — kurumsal, sakin, yeşil temaya göre daha soğuk tonlar */
    --color-bg: #f3f5f9;
    --color-surface: #ffffff;
    --color-text: #0f172a;
    --color-muted: #64748b;
    --color-accent: #1e40af;
    --color-accent-hover: #1d3a8a;
    --color-accent-soft: rgba(30, 64, 175, 0.12);
    --color-border: #e2e8f0;
    --color-header-bg: rgba(243, 245, 249, 0.92);
    --color-error: #be123c;
    --font-sans: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
    --space-xs: 0.35rem;
    --space-sm: 0.75rem;
    --space-md: 1.25rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --radius: 10px;
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    --header-h: 4rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    border-radius: 0 0 var(--radius) var(--radius);
}

.skip-link:focus {
    left: var(--space-md);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-header-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    position: relative;
    max-width: 72rem;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    min-height: var(--header-h);
}

.site-logo {
    font-weight: 700;
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: var(--color-text);
    text-decoration: none;
    line-height: 1.25;
    max-width: 16rem;
}

.site-logo:hover,
.site-logo:focus-visible {
    color: var(--color-accent);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    cursor: pointer;
}

.nav-toggle__bar {
    display: block;
    height: 2px;
    width: 1.25rem;
    margin: 0 auto;
    background: var(--color-text);
    border-radius: 1px;
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.site-nav.is-open {
    display: block;
}

.site-nav__list {
    list-style: none;
    margin: 0;
    padding: var(--space-sm) var(--space-md) var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.site-nav__list a {
    display: block;
    padding: var(--space-sm) var(--space-sm);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius);
    min-height: 44px;
    line-height: 1.4;
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
    background: var(--color-bg);
    color: var(--color-accent);
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .site-nav {
        display: block;
        position: static;
        background: transparent;
        border: 0;
        box-shadow: none;
    }

    .site-nav__list {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-end;
        padding: 0;
        gap: var(--space-xs);
    }

    .site-nav__list a {
        padding: var(--space-xs) var(--space-sm);
    }
}

.section {
    padding: var(--space-xl) var(--space-md);
    scroll-margin-top: calc(var(--header-h) + var(--space-sm));
}

.section--muted {
    background: var(--color-surface);
}

.section__inner {
    max-width: 48rem;
    margin: 0 auto;
}

.section__inner.hero {
    max-width: 72rem;
    display: grid;
    gap: var(--space-lg);
    align-items: center;
}

@media (min-width: 768px) {
    .section__inner.hero {
        grid-template-columns: 1fr 1fr;
    }
}

.section__title {
    margin: 0 0 var(--space-md);
    font-size: clamp(1.5rem, 4vw, 2rem);
    line-height: 1.25;
}

.section__lead {
    margin: 0 0 var(--space-md);
    color: var(--color-muted);
    font-size: 1.1rem;
}

.section__hint {
    margin: var(--space-md) 0 0;
    color: var(--color-muted);
}

.hero__title {
    margin: 0 0 var(--space-sm);
    font-size: clamp(1.75rem, 5vw, 2.35rem);
    line-height: 1.2;
}

.hero__sub {
    margin: 0 0 var(--space-md);
    color: var(--color-muted);
    max-width: 36rem;
}

.hero__figure {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--color-surface);
}

.hero__figure img {
    display: block;
    width: 100%;
    height: auto;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 var(--space-md);
    font: inherit;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
}

.button--primary {
    background: var(--color-accent);
    color: #fff;
}

.button--primary:hover,
.button--primary:focus-visible {
    background: var(--color-accent-hover);
}

.button--ghost {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
    margin-top: var(--space-sm);
}

.button--ghost:hover,
.button--ghost:focus-visible {
    background: var(--color-accent-soft);
}

.account-name-copy {
    margin: 0 0 var(--space-lg);
    padding: var(--space-md);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-bg);
}

.account-name-copy__text {
    margin: 0 0 var(--space-sm);
    line-height: 1.5;
}

.account-name-copy__value {
    font-weight: 700;
}

.copy-action {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.account-card .copy-action {
    margin-top: var(--space-md);
}

.copy-feedback {
    flex: 1 1 10rem;
    min-width: 0;
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--color-accent);
}

.copy-feedback:empty {
    display: none;
}

.copy-feedback:not(:empty) {
    display: block;
}

.copy-feedback--error {
    color: var(--color-error);
}

.account-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-md);
}

@media (min-width: 640px) {
    .account-list {
        grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    }
}

.account-card {
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
}

.account-card__head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.account-card__currency {
    font-weight: 700;
    color: var(--color-accent);
}

.account-card__iban {
    margin: 0;
    font-family: ui-monospace, "Cascadia Code", monospace;
    font-size: 0.95rem;
    word-break: break-all;
}

.prose {
    margin: 0 0 var(--space-md);
    color: var(--color-text);
}

.gallery {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-md);
    grid-template-columns: 1fr;
}

@media (min-width: 560px) {
    .gallery {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 960px) {
    .gallery {
        grid-template-columns: repeat(3, 1fr);
    }
}

.gallery__figure {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.gallery__open {
    appearance: none;
    border: 0;
    padding: 0;
    margin: 0;
    width: 100%;
    display: block;
    cursor: zoom-in;
    font: inherit;
    text-align: left;
    background: transparent;
    color: inherit;
}

.gallery__open:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.gallery__open:hover img {
    opacity: 0.92;
}

.gallery__open img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.gallery figcaption {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    color: var(--color-muted);
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    box-sizing: border-box;
}

.lightbox[hidden] {
    display: none !important;
}

.lightbox__backdrop {
    position: absolute;
    inset: 0;
    z-index: 0;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(15, 14, 12, 0.88);
    cursor: pointer;
}

.lightbox__panel {
    position: relative;
    z-index: 1;
    max-width: min(96vw, 1400px);
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.lightbox__close {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    z-index: 2;
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
}

.lightbox__close:hover,
.lightbox__close:focus-visible {
    background: rgba(0, 0, 0, 0.85);
}

.lightbox__close:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.lightbox__img {
    display: block;
    max-width: 96vw;
    max-height: min(85vh, 1200px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
}

.lightbox__caption {
    margin: 0;
    padding: 0 var(--space-sm);
    max-width: 42rem;
    color: #f5f2eb;
    font-size: 0.95rem;
    text-align: center;
    line-height: 1.45;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
}

.lightbox__caption:empty {
    display: none;
}

.news-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-md);
}

.news-card {
    padding: var(--space-md);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}

.news-card__title {
    margin: 0 0 var(--space-sm);
    font-size: 1.15rem;
}

.news-card__title a {
    color: var(--color-accent);
    text-decoration: none;
}

.news-card__title a:hover,
.news-card__title a:focus-visible {
    text-decoration: underline;
}

.news-card__excerpt {
    margin: 0;
    color: var(--color-muted);
}

.contact-phone {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 var(--space-md);
}

.contact-phone a {
    color: var(--color-accent);
    text-decoration: none;
}

.contact-phone a:hover,
.contact-phone a:focus-visible {
    text-decoration: underline;
}

.social-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.social-link {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    gap: var(--space-sm);
    padding: 0 var(--space-md);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
    background: var(--color-surface);
}

.social-link__icon {
    width: 1.35rem;
    height: 1.35rem;
    flex-shrink: 0;
}

.social-link__text {
    line-height: 1.2;
}

.social-link:hover,
.social-link:focus-visible {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.site-footer {
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 0.95rem;
}

.site-footer__note {
    margin: 0 0 var(--space-xs);
}

.site-footer__domain {
    margin: 0;
}

.site-footer a {
    color: var(--color-accent);
}