/* ============================================================
   TASARIMEVİ — portfolio + case study pages
   ============================================================ */

/* ---------- PAGE HEAD ---------- */
.page-head { padding-top: 160px; padding-bottom: clamp(40px,6vh,80px); }
.page-head__title { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.045em; line-height: 0.92; font-size: clamp(3rem, 10vw, 8.5rem); }
.crumbs { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); display: flex; gap: 10px; align-items: center; margin-bottom: 30px; }
.crumbs a:hover { color: var(--gold); }
.crumbs span { color: var(--faint); }

/* ---------- FILTER ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 36px; }
.filter { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .08em; text-transform: uppercase; padding: 10px 18px; border-radius: 100px; border: 1px solid var(--line); color: var(--muted); transition: all .35s var(--ease); }
.filter:hover { border-color: var(--line-2); color: var(--fg); }
.filter.is-active { background: var(--fg-strong); color: var(--bg); border-color: var(--fg-strong); }

/* ---------- PORTFOLIO LIST ---------- */
.work-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px,2.4vw,40px); }
.work { opacity: 1; transition: opacity .4s, transform .4s; }
.work.is-hidden { display: none; }
.work:nth-child(4n+1) { grid-column: 1 / -1; }
.work:nth-child(4n+1) .proj__media { aspect-ratio: 21/9; }
@media (max-width: 820px) { .work-grid { grid-template-columns: 1fr; } .work:nth-child(4n+1) .proj__media { aspect-ratio:16/10; } }

/* ---------- CASE STUDY ---------- */
.cs-hero { padding-top: 150px; }
.cs-hero__title { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.04em; line-height: 0.95; font-size: clamp(2.8rem, 8vw, 6.5rem); max-width: 16ch; margin-top: 28px; }
.cs-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 30px; }
.cs-tag { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .08em; text-transform: uppercase; padding: 8px 14px; border-radius: 100px; border: 1px solid var(--line-2); color: var(--muted); }
.cs-cover { aspect-ratio: 16/8; margin-top: clamp(40px,6vh,72px); border-radius: var(--radius-lg); }
.cs-meta { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--line); border-block: 1px solid var(--line); margin-top: 0; }
.cs-meta__item { background: var(--bg); padding: clamp(26px,3vw,40px) clamp(18px,2vw,30px); }
.cs-meta__k { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); margin-bottom: 12px; }
.cs-meta__v { font-family: var(--font-display); font-size: clamp(1.05rem,1.6vw,1.35rem); font-weight: 600; }
@media (max-width: 740px) { .cs-meta { grid-template-columns: 1fr 1fr; } }

.cs-block { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(30px,5vw,80px); align-items: start; }
.cs-block__label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.cs-block__title { font-family: var(--font-display); font-size: clamp(1.7rem,3vw,2.6rem); font-weight: 600; letter-spacing: -0.03em; margin-top: 14px; }
.cs-prose p { color: var(--muted); line-height: 1.7; font-size: 1.05rem; margin-bottom: 20px; max-width: 60ch; }
.cs-prose p strong { color: var(--fg); font-weight: 600; }
@media (max-width: 820px) { .cs-block { grid-template-columns: 1fr; gap: 18px; } }

.cs-results { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.cs-result { background: var(--bg-elev); padding: clamp(30px,4vw,54px); }
.cs-result__num { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.04em; font-size: clamp(2.4rem,4.6vw,4rem); line-height: 1; display: flex; align-items: baseline; }
.cs-result__num .s { color: var(--gold); font-size: .5em; margin-left: 2px; }
.cs-result__lab { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 16px; }
@media (max-width: 740px) { .cs-results { grid-template-columns: 1fr; } }

/* deliverables list + note */
.cs-list { list-style: none; margin: 8px 0 24px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 28px; max-width: 60ch; }
.cs-list li { position: relative; padding-left: 22px; color: var(--fg); font-size: 1rem; line-height: 1.5; }
.cs-list li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 8px; height: 8px; border-radius: 50%; background: var(--gold); }
.cs-note { font-family: var(--font-mono); font-size: 0.74rem; line-height: 1.6; letter-spacing: .02em; color: var(--faint); border-left: 2px solid var(--line-2); padding-left: 14px; max-width: 56ch; }
@media (max-width: 560px) { .cs-list { grid-template-columns: 1fr; } }

.cs-figure { aspect-ratio: 16/9; border-radius: var(--radius-lg); }
.cs-figure--tall { aspect-ratio: 4/5; }
.cs-duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px,2vw,28px); }
@media (max-width: 700px) { .cs-duo { grid-template-columns: 1fr; } }

.cs-tech { display: flex; gap: 10px; flex-wrap: wrap; }
.cs-tech span { font-family: var(--font-mono); font-size: 0.74rem; padding: 9px 16px; border: 1px solid var(--line); border-radius: 100px; color: var(--muted); }

.cs-next { border-top: 1px solid var(--line); }
.cs-next__link { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding-block: clamp(40px,6vh,80px); transition: padding-left .5s var(--ease); }
.cs-next__link:hover { padding-left: 20px; }
.cs-next__title { font-family: var(--font-display); font-size: clamp(2rem,5vw,4rem); font-weight: 600; letter-spacing: -0.03em; }
.cs-next__arrow { width: 70px; height: 70px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; flex: none; font-size: 1.4rem; transition: background .4s var(--ease), color .4s, transform .4s var(--ease); }
.cs-next__link:hover .cs-next__arrow { background: var(--gold); color: #0a0a0a; border-color: var(--gold); transform: rotate(-45deg); }