/* ==========================================================================
   Sürdürülebilirlik — fikir · yan akım akış diyagramı · dört ilke
   Foundation bileşenlerini (section-head, quote, mol-stage, cta-band) kullanır;
   burada yalnızca sayfaya özgü yerleşim var.
   ========================================================================== */

/* 0) Hero: bu sayfanın başlığı diğerlerinden uzun. İkinci satır ("koruyarak geleceğe taşımak.") iki sütunlu
   hero'da tek satıra sığsın diye ölçek biraz küçülür (fotoğraf sütunu korunur); aksi hâlde "koruyarak" yalnız kalıyor.
   Mobil/tablette (tek sütun) genel ölçek geçerli. */
@media (min-width: 1024px) {
    .page-hero__title { font-size: clamp(40px, 4.6vw, 65px); }
}

/* 1) Fikir: büyük ifade başlığı → altta metin | gold çizgili alıntı ------------ */
.su-idea__title {
    font-size: clamp(38px, 5vw, 76px);
    line-height: 1.04;
    letter-spacing: -.012em;
}
.su-idea__grid {
    position: relative;
    display: grid;
    gap: clamp(36px, 5vw, 56px);
    margin-top: clamp(48px, 6vw, 88px);
    padding-top: clamp(36px, 4.4vw, 60px);
    border-top: 1px solid var(--t-line);
}
.su-idea__grid::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 64px;
    height: 1px;
    background: var(--t-gold-line);
}
.su-idea__prose p { font-size: var(--fs-lead); line-height: 1.65; color: var(--t-lead); }
.su-idea__prose { max-width: 46ch; }
.su-idea__quote { max-width: 24ch; }
@media (min-width: 960px) {
    .su-idea__grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); column-gap: clamp(48px, 7vw, 128px); align-items: start; }
    .su-idea__grid--single { grid-template-columns: minmax(0, 1fr); }
    .su-idea__prose { padding-top: 10px; }
}

/* 2) Yan akımlar: akış diyagramı ------------------------------------------------
   Masaüstü: no | kaynak (caps) | gold bağlayıcı → | molekül düğümü | fraksiyon (serif) | ok
   Mobil: kaynak üstte, dikey bağlayıcı, altta düğüm + fraksiyon. Başlıktaki bağlantı tüm satırı kaplar. */
.su-flow { --cols: 36px minmax(0, 2fr) 88px minmax(0, 1.55fr) 40px; --cgap: clamp(18px, 2.2vw, 32px); }
.su-flow__legend { display: none; }
.su-flow__list { list-style: none; border-top: 1px solid var(--t-line); }
.su-flow__row {
    position: relative;
    display: grid;
    grid-template-columns: 30px 64px minmax(0, 1fr) 36px;
    grid-template-areas:
        "no   src  src  src"
        ".    node out  arrow";
    column-gap: 16px;
    row-gap: 8px;
    align-items: center;
    padding-block: 24px;
    border-bottom: 1px solid var(--t-line);
    transition: background-color .6s var(--ease);
}
.su-flow__row.is-link:hover { background: rgba(239, 233, 220, .025); }
.su-flow__no {
    grid-area: no;
    align-self: start;
    line-height: 1.5;                /* kaynak etiketinin ilk satırıyla aynı hizada */
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .1em;
    color: var(--t-gold);
    font-variant-numeric: tabular-nums;
}
/* Kaynak + bağlayıcı tek hücrede: mobilde alt alta (dikey ok düğümün ortasına iner), masaüstünde yan yana (çizgi metinden düğüme uzanır) */
.su-flow__src { grid-area: src; display: flex; flex-direction: column; align-items: flex-start; gap: 10px; min-width: 0; }
.su-flow__source {
    font-size: 11.5px;
    font-weight: 500;
    line-height: 1.45;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--t-fg);
    transition: color .4s var(--ease);
}
.su-flow__row.is-link:hover .su-flow__source { color: var(--t-strong); }

/* Bağlayıcı: ince gold çizgi (başta nokta, sonda ok ucu) + üzerinde ilerleyen parçacık */
.su-flow__line {
    position: relative;
    display: block;
    flex: none;
    width: 9px;
    height: 28px;
    margin-left: 27px;          /* 64px düğümün ortası */
}
.su-flow__line::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 0;
    bottom: 1px;
    width: 1px;
    background: linear-gradient(180deg, rgba(198, 164, 106, .2), var(--c-gold-400));
    transform-origin: top;
    transition: transform 1.1s var(--ease) .25s;
}
.su-flow__line::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 9px;
    height: 6px;
    background: var(--c-gold-400);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 6'%3E%3Cpath d='M1 1l3.5 4 3.5-4' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 9 6'%3E%3Cpath d='M1 1l3.5 4 3.5-4' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E") center / contain no-repeat;
    transition: opacity .6s var(--ease) 1.1s;
}
.su-flow__line i {
    position: absolute;
    left: 2px;
    top: 0;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--c-gold-300);
    box-shadow: 0 0 8px rgba(220, 194, 143, .7);
    opacity: 0;
}

/* Molekül düğümü: yuvarlak, kaynağa özgü ışıma, ölçekli molekül (uzun zincirler makro kadraj gibi taşar) */
.su-flow__node {
    grid-area: node;
    width: 64px;
    aspect-ratio: 1;
    border: 1px solid rgba(220, 194, 143, .3);
    border-radius: 50%;
    isolation: isolate;
    background:
        radial-gradient(80% 80% at 68% 24%, rgba(122, 31, 43, .45), transparent 72%),
        var(--c-ink-850);
    background:
        radial-gradient(80% 80% at 68% 24%, color-mix(in srgb, var(--accent) 65%, transparent) 0%, transparent 72%),
        var(--c-ink-850);
    color: var(--c-gold-300);
    --mol-color: var(--c-gold-300);
    --mol-stroke: 1.15px;
    --mol-bond: 10cqi;
    transition: border-color .5s var(--ease);
}
.su-flow__node .molecule { transition: transform 1.4s var(--ease); }
.su-flow__node .fw-visual { width: 72%; color: var(--c-gold-400); opacity: .6; }
.su-flow__row.is-link:hover .su-flow__node { border-color: var(--c-gold-400); }
.su-flow__row.is-link:hover .su-flow__node .molecule { transform: scale(1.08); }

.su-flow__out { grid-area: out; min-width: 0; }
.su-flow__title { font-size: clamp(22px, 2.1vw, 30px); line-height: 1.14; }
.su-flow__link { color: inherit; transition: color .4s var(--ease); }
.su-flow__link::after { content: ""; position: absolute; inset: 0; z-index: 2; }
.su-flow__link:focus-visible { outline: none; }
.su-flow__link:focus-visible::after { outline: 2px solid var(--c-gold-400); outline-offset: -2px; border-radius: var(--radius-sm); }
.su-flow__row.is-link:hover .su-flow__link { color: var(--c-gold-300); }
.su-flow__text { margin-top: 6px; }
.su-flow__text p { font-size: 14.5px; line-height: 1.6; color: var(--t-muted); }
.su-flow__arrow {
    grid-area: arrow;
    justify-self: end;
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--t-line);
    border-radius: 50%;
    color: var(--t-strong);
    font-size: 14px;
    transition: background-color .45s var(--ease), border-color .45s var(--ease), color .45s var(--ease), transform .45s var(--ease);
}
.su-flow__row.is-link:hover .su-flow__arrow { background: var(--c-gold-400); border-color: var(--c-gold-400); color: var(--c-ink-950); transform: rotate(-45deg); }

@media (min-width: 960px) {
    .su-flow__legend {
        display: grid;
        grid-template-columns: var(--cols);
        column-gap: var(--cgap);
        padding-bottom: 14px;
        font-size: 10.5px;
        font-weight: 500;
        letter-spacing: .22em;
        text-transform: uppercase;
        color: var(--t-muted);
    }
    .su-flow__legend-src { grid-column: 2; }
    .su-flow__legend-out { grid-column: 3 / span 2; }
    .su-flow__row {
        grid-template-columns: var(--cols);
        grid-template-areas: "no src node out arrow";
        column-gap: var(--cgap);
        padding-block: 22px;
    }
    .su-flow__row.is-link:hover { background: none; }
    .su-flow__no { align-self: center; }
    .su-flow__source { font-size: 12px; }
    .su-flow__src { flex-direction: row; align-items: center; gap: 22px; }
    .su-flow__source { flex: none; max-width: 62%; }
    .su-flow__line { flex: 1 1 auto; min-width: 40px; width: auto; height: 9px; margin-left: 0; }
    .su-flow__line::before {
        left: 3px;
        right: 1px;
        top: 4px;
        bottom: auto;
        width: auto;
        height: 1px;
        background: linear-gradient(90deg, rgba(198, 164, 106, .22), var(--c-gold-400));
        transform-origin: left;
    }
    .su-flow__line::after {
        left: auto;
        right: 0;
        bottom: auto;
        top: 0;
        width: 6px;
        height: 9px;
        -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 9'%3E%3Cpath d='M1 1l4 3.5-4 3.5' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E");
        mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 6 9'%3E%3Cpath d='M1 1l4 3.5-4 3.5' fill='none' stroke='%23000' stroke-width='1'/%3E%3C/svg%3E");
    }
    .su-flow__line i { left: 0; top: 2px; }
    .su-flow__node { width: 88px; --mol-bond: 8.4cqi; }
    .su-flow__row.is-link:hover .su-flow__line::before { background: var(--c-gold-400); }
}

/* Hareket: bağlayıcı görünür olunca çizilir; parçacık kaynaktan fraksiyona akar (yalnız hareket izni varsa) */
@media (prefers-reduced-motion: no-preference) {
    html.js .su-flow__row:not(.is-visible) .su-flow__line::before { transform: scale(1, 0); }
    html.js .su-flow__row:not(.is-visible) .su-flow__line::after { opacity: 0; }
    .su-flow__row.is-visible .su-flow__line i { animation: su-particle-y 3.6s var(--ease) infinite; animation-delay: calc(1.4s + var(--i, 0) * .5s); }
    @media (min-width: 960px) {
        html.js .su-flow__row:not(.is-visible) .su-flow__line::before { transform: scale(0, 1); }
        .su-flow__row.is-visible .su-flow__line i { animation-name: su-particle-x; }
    }
}
@keyframes su-particle-x {
    0% { left: 0; opacity: 0; }
    12% { opacity: 1; }
    72% { opacity: 1; }
    88%, 100% { left: calc(100% - 10px); opacity: 0; }
}
@keyframes su-particle-y {
    0% { top: 0; opacity: 0; }
    15% { opacity: 1; }
    70% { opacity: 1; }
    85%, 100% { top: calc(100% - 9px); opacity: 0; }
}

.nw { white-space: nowrap; }

/* 3) İlkeler: başlık üstte; kartlar 1 → 2×2. Geniş ekranda kart içi yatay: ikon solda, metin sağda --- */
.su-pr__cards { list-style: none; display: grid; gap: var(--gap); }
@media (min-width: 640px) { .su-pr__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } .su-pr__cards--1 { grid-template-columns: minmax(0, 1fr); } }
.su-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    height: 100%;
    padding: clamp(26px, 3vw, 40px);
    border: 1px solid var(--t-line);
    border-radius: var(--radius);
    background: var(--t-surface);
    transition: border-color .5s var(--ease);
}
.su-card:hover { border-color: rgba(176, 141, 87, .55); }
.su-card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: clamp(20px, 2.6vw, 36px); }
.su-card__icon {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border: 1px solid var(--t-gold-line);
    border-radius: 50%;
    color: var(--t-strong);
    font-size: 23px;
    transition: background-color .5s var(--ease);
}
.su-card:hover .su-card__icon { background: rgba(198, 164, 106, .12); }
.su-card__no { margin-left: auto; padding-top: 4px; font-size: 11.5px; font-weight: 500; letter-spacing: .14em; color: var(--t-gold); font-variant-numeric: tabular-nums; }
.su-card__label { font-size: 11px; font-weight: 500; line-height: 1.4; letter-spacing: .2em; text-transform: uppercase; color: var(--t-muted); }
.su-card__title { font-size: clamp(24px, 2.2vw, 31px); line-height: 1.12; }
.su-card__text { margin-top: 4px; }
.su-card__text p { font-size: 15px; line-height: 1.65; color: var(--t-muted); }
@media (min-width: 1024px) {
    .su-card {
        --pad: clamp(32px, 3vw, 44px);
        position: relative;
        display: grid;
        grid-template-columns: 52px minmax(0, 1fr);
        column-gap: clamp(24px, 2.4vw, 36px);
        row-gap: 10px;
        align-content: start;
        padding: var(--pad);
    }
    .su-card__top { display: contents; }
    .su-card__icon { grid-column: 1; grid-row: 1 / span 3; align-self: start; }
    .su-card__no { position: absolute; top: var(--pad); right: var(--pad); padding-top: 2px; }
    .su-card__label, .su-card__title, .su-card__text { grid-column: 2; }
    .su-card__label { padding-top: 3px; padding-right: 44px; }
    .su-card__text p { max-width: 52ch; }
}