/* =========================================================
   NAV10 — Core Design System
   Monochrome · Premium · Enterprise
   ========================================================= */

:root {
    /* Brand */
    --nav-black: #000000;
    --nav-white: #ffffff;

    /* Surfaces */
    --nav-bg: #ffffff;
    --nav-surface: #ffffff;
    --nav-dark: #000000;
    --nav-faint: rgba(0, 0, 0, 0.06);

    /* Text */
    --nav-ink: #000000;
    --nav-muted: rgba(0, 0, 0, 0.52);
    --nav-soft: rgba(0, 0, 0, 0.32);
    --nav-on-dark: #ffffff;
    --nav-on-dark-muted: rgba(255, 255, 255, 0.60);
    --nav-on-dark-soft: rgba(255, 255, 255, 0.32);

    /* Lines */
    --nav-line: rgba(0, 0, 0, 0.11);
    --nav-line-strong: rgba(0, 0, 0, 0.20);
    --nav-dark-line: rgba(255, 255, 255, 0.14);

    /* Radius */
    --nav-radius-xs: 4px;
    --nav-radius-sm: 8px;
    --nav-radius-md: 12px;
    --nav-radius-lg: 16px;

    /* Layout */
    --nav-content: 1280px;
    --nav-reading: 760px;

    /* Spacing */
    --nav-space-1: 4px;
    --nav-space-2: 8px;
    --nav-space-3: 12px;
    --nav-space-4: 16px;
    --nav-space-5: 24px;
    --nav-space-6: 32px;
    --nav-space-7: 48px;
    --nav-space-8: 64px;
    --nav-space-9: 96px;
    --nav-space-10: 128px;

    /* Legacy aliases */
    --black: var(--nav-black);
    --white: var(--nav-white);
    --text: var(--nav-ink);
    --text-muted: var(--nav-muted);
    --text-soft: var(--nav-soft);
    --text-on-dark: var(--nav-on-dark);
    --text-on-dark-muted: var(--nav-on-dark-muted);
    --text-on-dark-soft: var(--nav-on-dark-soft);
    --line: var(--nav-line);
    --line-dark: var(--nav-dark-line);
    --surface: var(--nav-surface);
    --surface-dark: var(--nav-dark);
    --surface-muted: var(--nav-faint);
    --radius-sm: var(--nav-radius-sm);
    --radius-md: var(--nav-radius-md);
    --radius-pill: 999px;
    --container: var(--nav-content);
    --gutter: clamp(1.25rem, 4vw, 2.5rem);
    --header-h: 72px;
    --font: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --duration: 220ms;
}

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

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

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--nav-ink);
    background: var(--nav-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

h1, h2, h3, h4, h5, h6, p {
    margin: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 10000;
    background: var(--nav-black);
    color: var(--nav-white);
    padding: 0.75rem 1rem;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
}

.container {
    width: min(100% - (var(--gutter) * 2), var(--nav-content));
    margin-inline: auto;
}

/* ---------- Typography ---------- */

.label-caps {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nav-muted);
}

.label-caps--light {
    color: var(--nav-on-dark-muted);
}

.display {
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 0.92;
    color: var(--nav-ink);
}

.display--xl {
    font-size: clamp(3rem, 8vw, 8rem);
}

.display--lg {
    font-size: clamp(2.25rem, 5vw, 4.5rem);
}

.display--md {
    font-size: clamp(1.75rem, 3.5vw, 3rem);
}

.lead {
    font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
    line-height: 1.75;
    color: var(--nav-muted);
    max-width: 38rem;
}

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

.text-center {
    text-align: center;
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 52px;
    padding: 0.85rem 1.75rem;
    border-radius: var(--nav-radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: opacity var(--duration) var(--ease),
                background-color var(--duration) var(--ease),
                color var(--duration) var(--ease),
                border-color var(--duration) var(--ease),
                transform var(--duration) var(--ease);
    border: 1px solid transparent;
    text-align: center;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--nav-black);
    outline-offset: 3px;
}

.btn--primary {
    background: var(--nav-black);
    color: var(--nav-white);
}

.btn--primary:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.btn--inverse {
    background: var(--nav-white);
    color: var(--nav-black);
}

.btn--inverse:hover {
    opacity: 0.92;
    transform: translateY(-1px);
}

.btn--ghost {
    background: transparent;
    color: var(--nav-white);
    border-color: rgba(255, 255, 255, 0.28);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn--outline {
    background: transparent;
    color: var(--nav-black);
    border-color: var(--nav-line-strong);
}

.btn--outline:hover {
    border-color: var(--nav-black);
}

.btn--block {
    width: 100%;
}

.btn--pill {
    border-radius: var(--radius-pill);
}

.btn--sm {
    min-height: 44px;
    padding: 0.65rem 1.25rem;
    font-size: 0.875rem;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--nav-on-dark-muted);
    transition: color var(--duration) var(--ease),
                transform var(--duration) var(--ease);
}

.link-arrow:hover {
    color: var(--nav-white);
    transform: translateX(3px);
}

.link-arrow--dark {
    color: var(--nav-muted);
}

.link-arrow--dark:hover {
    color: var(--nav-black);
}

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--nav-black);
    color: var(--nav-white);
    height: var(--header-h);
    border-bottom: 1px solid var(--nav-dark-line);
}

.header-inner {
    width: min(100% - (var(--gutter) * 2), var(--nav-content));
    margin-inline: auto;
    height: 100%;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--nav-space-5);
}

.logo {
    display: inline-flex;
    align-items: center;
    line-height: 0;
    color: var(--nav-white);
    white-space: nowrap;
    transition: opacity var(--duration) var(--ease);
}

.logo:hover {
    opacity: 0.75;
}

.site-logo {
    display: block;
    width: auto;
    height: 1.75rem;
    object-fit: contain;
}

.site-logo--sm {
    height: 1.5rem;
}

.site-logo--md {
    height: 2.75rem;
}

.site-logo--lg {
    height: 3.25rem;
}

.site-logo--xl,
.site-logo--wordmark {
    width: min(100%, 52rem);
    height: auto;
    max-height: none;
}

/* Header: logo okunaklı olsun */
.site-header .logo .site-logo,
.site-header .site-logo--md,
.mobile-drawer__top .site-logo {
    height: 2.75rem;
    width: auto;
    max-width: min(240px, 48vw);
}

.logo-dot {
    display: inline-block;
    width: 0.32em;
    height: 0.32em;
    margin: 0 0.1em;
    border-radius: 50%;
    background: currentColor;
    vertical-align: 0.08em;
}

.nav-desktop {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: clamp(1.5rem, 2.8vw, 2.75rem);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--nav-space-4);
}

.nav-link {
    position: relative;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
    transition: color var(--duration) var(--ease),
                opacity var(--duration) var(--ease);
    padding: 0.35rem 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--nav-white);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration) var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--nav-white);
}

.nav-link:hover::after,
.nav-link.is-active::after {
    transform: scaleX(1);
}

.nav-link--auth {
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.82);
}

.nav-link--cta {
    font-weight: 600;
    color: #fff;
}

.nav-link--strong {
    font-weight: 600;
    color: var(--nav-white);
    padding: 0.55rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: var(--nav-radius-xs);
    transition: background-color var(--duration) var(--ease),
                border-color var(--duration) var(--ease);
}

.nav-link--strong::after {
    display: none;
}

.nav-link--strong:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.55);
}

.header-inner--minimal {
    grid-template-columns: auto 1fr auto;
}

.header-inner--minimal .nav-desktop {
    visibility: hidden;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    margin-left: auto;
}

.menu-toggle__bar {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--nav-white);
    transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.menu-toggle.is-open .menu-toggle__bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.menu-toggle.is-open .menu-toggle__bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.is-open .menu-toggle__bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* ---------- Mobile Drawer ---------- */

.mobile-drawer {
    position: fixed;
    inset: 0;
    z-index: 2000;
}

.mobile-drawer[hidden] {
    display: none;
}

.mobile-drawer__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(2px);
}

.mobile-drawer__panel {
    position: absolute;
    top: 0;
    right: 0;
    width: min(100%, 420px);
    height: 100%;
    background: var(--nav-black);
    color: var(--nav-white);
    padding: var(--nav-space-5) var(--nav-space-6) var(--nav-space-7);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 320ms var(--ease);
}

.mobile-drawer.is-open .mobile-drawer__panel {
    transform: translateX(0);
}

.mobile-drawer__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--nav-space-8);
    padding-bottom: var(--nav-space-5);
    border-bottom: 1px solid var(--nav-dark-line);
}

.mobile-drawer__close {
    width: 44px;
    height: 44px;
    font-size: 1.75rem;
    line-height: 1;
    color: var(--nav-white);
    opacity: 0.65;
    transition: opacity var(--duration) var(--ease);
}

.mobile-drawer__close:hover {
    opacity: 1;
}

.mobile-drawer__links {
    display: flex;
    flex-direction: column;
    gap: 0;
    flex: 1;
}

.mobile-drawer__link {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    align-items: center;
    gap: var(--nav-space-4);
    padding: var(--nav-space-5) 0;
    border-bottom: 1px solid var(--nav-dark-line);
    transition: opacity var(--duration) var(--ease),
                transform var(--duration) var(--ease);
}

.mobile-drawer__link:hover {
    opacity: 0.75;
    transform: translateX(4px);
}

.mobile-drawer__link-num {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--nav-on-dark-soft);
}

.mobile-drawer__link-text {
    font-size: clamp(1.25rem, 4vw, 1.5rem);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.mobile-drawer__auth {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: var(--nav-space-3);
    padding-top: var(--nav-space-6);
    border-top: 1px solid var(--nav-dark-line);
}

body.menu-open {
    overflow: hidden;
}

/* ---------- Footer ---------- */

.site-footer {
    background: var(--nav-black);
    color: var(--nav-white);
    padding: var(--nav-space-9) 0 var(--nav-space-6);
}

.footer-wordmark {
    width: min(100% - (var(--gutter) * 2), var(--nav-content));
    margin: 0 auto var(--nav-space-8);
    padding-bottom: var(--nav-space-7);
    border-bottom: 1px solid var(--nav-dark-line);
}

.footer-wordmark__text {
    line-height: 0;
    display: block;
}

.footer-wordmark__link {
    display: block;
    line-height: 0;
    width: fit-content;
    max-width: 100%;
}

.footer-wordmark__link:hover {
    opacity: 0.85;
}

.footer-wordmark__text .site-logo,
.footer-wordmark__text .site-logo--wordmark,
.footer-wordmark__text .site-logo--xl,
.footer-wordmark__link .site-logo,
.footer-wordmark__link .site-logo--wordmark,
.footer-wordmark__link .site-logo--xl {
    display: block;
    width: min(100%, 56rem);
    height: clamp(3.5rem, 12vw, 7.5rem);
    max-width: 100%;
    object-fit: contain;
    object-position: left center;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--nav-space-7);
    padding-bottom: var(--nav-space-7);
}

.footer-heading {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--nav-on-dark-soft);
    margin-bottom: var(--nav-space-5);
}

.footer-list {
    display: flex;
    flex-direction: column;
    gap: var(--nav-space-3);
}

.footer-list a {
    font-size: 0.9375rem;
    color: var(--nav-on-dark-muted);
    transition: color var(--duration) var(--ease),
                opacity var(--duration) var(--ease);
}

.footer-list a:hover {
    color: var(--nav-white);
}

.footer-bottom {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--nav-space-4);
    padding-top: var(--nav-space-5);
    border-top: 1px solid var(--nav-dark-line);
}

.footer-brand {
    line-height: 0;
}

.footer-copy,
.footer-locale {
    font-size: 0.75rem;
    color: var(--nav-on-dark-soft);
    letter-spacing: 0.04em;
}

.footer-copy {
    text-align: center;
}

.footer-locale {
    text-align: right;
}

/* ---------- Forms (base) ---------- */

.form-label {
    display: block;
    margin-bottom: var(--nav-space-2);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--nav-muted);
}

.form-control {
    width: 100%;
    min-height: 56px;
    padding: 0.9rem 1.1rem;
    border: 1px solid var(--nav-line);
    border-radius: var(--nav-radius-sm);
    background: var(--nav-white);
    font-size: 16px;
    line-height: 1.4;
    transition: border-color var(--duration) var(--ease);
}

.form-control:focus {
    outline: none;
    border-color: var(--nav-black);
}

.form-control::placeholder {
    color: var(--nav-soft);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23000' stroke-opacity='0.35' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* ---------- Reduced motion ---------- */

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}