/* sezershine.com
   Koyu tema: ink zemin, teal vurgu. Renkler değişken, açık temaya çevirmek
   :root bloğunu değiştirmekle olur. Marka künyesi: Identity/brand-notes.md */

:root {
    /* Marka */
    --teal: #0FB5AA;
    --teal-lite: #16C6BA;
    --teal-deep: #0B857D;
    --ink: #1C2430;
    --slate: #33506B;

    /* Koyu tema yüzeyleri */
    --bg: #151B25;
    --bg-alt: #1C2430;
    --surface: #232C3A;
    --line: #2E3949;

    /* Metin */
    --text: #EEF2F6;
    --text-dim: #9AA6B4;

    --font-display: 'Space Grotesk', 'Segoe UI', Arial, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;

    --wrap: 1140px;
    --wrap-narrow: 720px;
    --radius: 14px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img,
svg,
video {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--teal-lite);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--teal-lite);
    outline-offset: 3px;
}

.wrap {
    width: 100%;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.wrap-narrow {
    max-width: var(--wrap-narrow);
}

.skip {
    position: absolute;
    left: -9999px;
}

.skip:focus {
    left: 1rem;
    top: 1rem;
    z-index: 100;
    background: var(--teal);
    color: var(--ink);
    padding: .6rem 1rem;
    border-radius: 8px;
}

/* ---------------------------------------------------------------- header */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(21, 27, 37, .88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    min-height: 68px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    color: var(--text);
    text-decoration: none;
    flex: 0 0 auto;
}

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

.mark {
    width: 30px;
    height: 30px;
    display: block;
}

.brand-word {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: -.03em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--text-dim);
    font-size: .82rem;
    font-weight: 400;
    letter-spacing: .12em;
    text-transform: uppercase;
    text-decoration: none;
    padding: .35rem 0;
    border-bottom: 1px solid transparent;
    transition: color .18s ease, border-color .18s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--text);
    border-bottom-color: var(--teal);
    text-decoration: none;
}

.lang {
    font-family: var(--font-display);
    font-size: .72rem !important;
    font-weight: 600;
    letter-spacing: .1em;
    color: var(--text-dim) !important;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .25rem .6rem !important;
}

.lang:hover {
    color: var(--ink) !important;
    background: var(--teal);
    border-color: var(--teal);
}

/* Mobil menü, JS'siz: gizli checkbox + label. CSP'ye script eklemeye gerek yok. */
.navtoggle,
.navbtn {
    display: none;
}

/* ------------------------------------------------------------------ hero */

.hero {
    padding: clamp(4rem, 12vw, 8.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.eyebrow {
    font-family: var(--font-body);
    font-size: .72rem;
    font-weight: 500;
    letter-spacing: .32em;
    text-transform: uppercase;
    color: var(--teal);
    margin: 0 0 1.25rem;
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2.1rem, 6.2vw, 4rem);
    line-height: 1.05;
    letter-spacing: -.035em;
    margin: 0 0 1.5rem;
    max-width: 17ch;
}

.hero-lead {
    font-size: clamp(1.1rem, 2.4vw, 1.45rem);
    line-height: 1.5;
    font-weight: 300;
    margin: 0 0 1.25rem;
    max-width: 46ch;
}

.hero-sub {
    color: var(--text-dim);
    max-width: 58ch;
    margin: 0 0 2.5rem;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: .85rem;
}

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-size: .82rem;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .95rem 1.7rem;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    transition: background .18s ease, color .18s ease, border-color .18s ease;
}

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

.btn-primary {
    background: var(--teal);
    color: var(--ink);
}

.btn-primary:hover {
    background: var(--teal-lite);
}

.btn-ghost {
    border-color: var(--line);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--teal);
    color: var(--teal-lite);
}

/* ------------------------------------------------------------------ reel */

.reel {
    padding: 0 0 clamp(3rem, 8vw, 5.5rem);
}

.reel-frame {
    border-radius: var(--radius);
    overflow: hidden;
}

.reel-frame .thumb {
    aspect-ratio: 16 / 9;
}

.reel-caption {
    color: var(--text-dim);
    font-size: .9rem;
    margin: 1rem 0 0;
}

/* -------------------------------------------------------------- sections */

.section {
    padding: clamp(3rem, 8vw, 6rem) 0;
}

.section-alt {
    background: var(--bg-alt);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.section-head {
    margin-bottom: 2.75rem;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.6rem, 3.6vw, 2.4rem);
    letter-spacing: -.025em;
    line-height: 1.15;
    margin: 0 0 .85rem;
}

.section-title-sm {
    font-size: 1.25rem;
    margin-top: 3rem;
}

.section-lead {
    color: var(--text-dim);
    max-width: 58ch;
    margin: 0;
}

.section-more {
    margin: 2.5rem 0 0;
}

.link-arrow {
    font-family: var(--font-body);
    font-size: .82rem;
    font-weight: 500;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.link-arrow::after {
    content: ' \2192';
}

.link-back::before {
    content: '\2190\00a0';
}

.link-back {
    color: var(--teal);
    text-decoration: none;
}

/* ----------------------------------------------------------- page header */

.page-head {
    padding: clamp(3rem, 9vw, 6rem) 0 0;
}

.page-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2rem, 5.2vw, 3.4rem);
    letter-spacing: -.032em;
    line-height: 1.08;
    margin: 0 0 1.25rem;
}

.page-lead {
    color: var(--text-dim);
    font-size: 1.08rem;
    max-width: 56ch;
    margin: 0;
}

/* ------------------------------------------------------------- work grid */

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.75rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color .2s ease, transform .2s ease;
}

.card:hover {
    border-color: var(--teal-deep);
    transform: translateY(-3px);
}

.card-link,
.card-link:hover {
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-body {
    padding: 1.4rem 1.5rem 1.7rem;
}

.card-meta {
    display: flex;
    gap: .75rem;
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--teal);
    margin: 0 0 .6rem;
}

.card-meta span + span {
    color: var(--text-dim);
}

.card-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: -.02em;
    margin: 0 0 .55rem;
}

.card-summary {
    color: var(--text-dim);
    font-size: .93rem;
    line-height: 1.6;
    margin: 0;
}

/* Placeholder: gerçek görsel gelince bu blok <img> ile değişir. */
.thumb {
    position: relative;
    display: grid;
    place-items: center;
    aspect-ratio: 4 / 3;
    background:
        radial-gradient(circle at 30% 25%, rgba(15, 181, 170, .16), transparent 60%),
        repeating-linear-gradient(135deg, rgba(255, 255, 255, .022) 0 12px, transparent 12px 24px),
        var(--ink);
    color: var(--teal);
}

.thumb-mark {
    width: 34%;
    max-width: 120px;
}

.badge {
    position: absolute;
    top: .85rem;
    left: .85rem;
    font-family: var(--font-body);
    font-size: .64rem;
    font-weight: 500;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--teal-lite);
    background: rgba(11, 133, 125, .18);
    border: 1px solid rgba(22, 198, 186, .35);
    border-radius: 999px;
    padding: .3rem .7rem;
}

/* -------------------------------------------------------- work item page */

.page-head-work .card-meta {
    margin: 0;
}

.work-media {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 2rem;
}

.work-media .thumb {
    aspect-ratio: 16 / 9;
}

.note {
    background: var(--surface);
    border-left: 2px solid var(--teal);
    border-radius: 0 8px 8px 0;
    padding: 1rem 1.25rem;
    color: var(--text-dim);
    font-size: .95rem;
    margin: 0 0 2rem;
}

.prose p {
    margin: 0 0 1.35rem;
}

.prose p:last-child {
    margin-bottom: 0;
}

.work-facts {
    margin: 2.5rem 0 0;
    padding-top: 1.75rem;
    border-top: 1px solid var(--line);
}

.work-facts dt {
    font-size: .72rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: .4rem;
}

.work-facts dd {
    margin: 0;
    color: var(--text-dim);
}

/* -------------------------------------------------------------- services */

.svc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.svc {
    border-top: 2px solid var(--teal-deep);
    padding-top: 1.1rem;
}

.svc-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -.015em;
    margin: 0 0 .5rem;
}

.svc-summary {
    color: var(--text-dim);
    font-size: .92rem;
    line-height: 1.6;
    margin: 0;
}

.svc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.svc-full {
    display: grid;
    grid-template-columns: 4.5rem 1fr;
    gap: 1.5rem;
    padding: 2.25rem 0;
    border-top: 1px solid var(--line);
}

.svc-full:first-child {
    border-top: 0;
    padding-top: 0;
}

.svc-num {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--teal-deep);
    margin: 0;
}

.svc-full-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.2rem, 2.6vw, 1.6rem);
    letter-spacing: -.02em;
    margin: 0 0 .6rem;
}

.svc-full-summary {
    color: var(--teal-lite);
    font-size: .98rem;
    margin: 0 0 .85rem;
}

.svc-full-body {
    color: var(--text-dim);
    margin: 0;
    max-width: 62ch;
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    list-style: none;
    margin: 2.5rem 0 0;
    padding: 0;
}

.how-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    margin: 0 0 .6rem;
}

.how-body {
    color: var(--text-dim);
    font-size: .95rem;
    margin: 0;
}

/* ------------------------------------------------------- about / contact */

.facts {
    margin: 1.5rem 0 0;
}

.fact {
    display: grid;
    grid-template-columns: 12rem 1fr;
    gap: 1.25rem;
    padding: 1.15rem 0;
    border-top: 1px solid var(--line);
}

.fact dt {
    font-size: .74rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--teal);
}

.fact dd {
    margin: 0;
    color: var(--text-dim);
}

.facts-contact dd {
    color: var(--text);
    font-size: 1.05rem;
}

.callout {
    margin: 3rem 0 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.75rem;
}

.callout-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    margin: 0 0 .7rem;
}

.callout p {
    color: var(--text-dim);
    margin: 0;
    font-size: .95rem;
}

.proof-lead {
    color: var(--text-dim);
    max-width: 62ch;
    margin: 0;
}

/* ----------------------------------------------------------------- legal */

.legal-updated {
    color: var(--text-dim);
    font-size: .88rem;
    margin: 0;
}

.legal-section {
    margin-bottom: 2.25rem;
}

.legal-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: -.015em;
    margin: 0 0 .8rem;
}

.legal p {
    color: var(--text-dim);
    font-size: .96rem;
}

.legal-list {
    color: var(--text-dim);
    font-size: .96rem;
    padding-left: 1.15rem;
    margin: 0 0 1.35rem;
}

.legal-list li {
    margin-bottom: .6rem;
}

.legal strong {
    color: var(--text);
    font-weight: 500;
}

/* ---------------------------------------------------------------- footer */

.site-footer {
    background: var(--ink);
    border-top: 1px solid var(--line);
    padding: clamp(2.5rem, 6vw, 4rem) 0 2rem;
    margin-top: auto;
}

.footer-inner {
    display: grid;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: .85rem;
}

.footer-tagline {
    margin: 0;
    color: var(--text-dim);
    font-size: .95rem;
    max-width: 42ch;
}

.footer-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: .95rem;
}

.footer-invoice {
    color: var(--text-dim);
    font-size: .85rem;
    max-width: 60ch;
    margin: 0;
    padding-top: 1.25rem;
    border-top: 1px solid var(--line);
}

.footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    align-items: center;
    font-size: .8rem;
    color: var(--text-dim);
}

.footer-legal a {
    color: var(--text-dim);
}

.footer-legal a:hover {
    color: var(--teal-lite);
}

/* ------------------------------------------------------------ responsive */

@media (max-width: 760px) {
    .navbtn {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        padding: 0 8px;
        cursor: pointer;
        margin-left: auto;
    }

    .navbtn span {
        display: block;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
        transition: transform .2s ease, opacity .2s ease;
    }

    .navtoggle:checked ~ .navbtn span:first-child {
        transform: translateY(3.5px) rotate(45deg);
    }

    .navtoggle:checked ~ .navbtn span:last-child {
        transform: translateY(-3.5px) rotate(-45deg);
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        background: var(--bg-alt);
        border-bottom: 1px solid var(--line);
        padding: .5rem 1.5rem 1.5rem;
    }

    .navtoggle:checked ~ .site-nav {
        display: flex;
    }

    .site-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        width: 100%;
    }

    .site-nav ul li {
        width: 100%;
        border-bottom: 1px solid var(--line);
    }

    .site-nav ul a {
        display: block;
        padding: .95rem 0;
        border-bottom: 0;
        font-size: .9rem;
    }

    .lang {
        margin-top: 1.1rem;
    }

    .fact,
    .svc-full {
        grid-template-columns: 1fr;
        gap: .4rem;
    }

    .svc-num {
        color: var(--teal);
        font-size: .8rem;
        letter-spacing: .14em;
    }
}

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

    *,
    *::before,
    *::after {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
    }
}