/* ============================================================
   IQRAM AHMED PORTFOLIO — casestudies.css
   Case study hub — public and private
   ============================================================ */


/* ----------------------------------------------------------
   PAGE HEADER
---------------------------------------------------------- */
.hub-header {
  display: grid;
  grid-template-columns: var(--hero-side-width) 1fr var(--hero-side-width);
  border-bottom: var(--border-default);
}

.hub-header__side {
  border-right: var(--border-default);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
}

.hub-header__side--right {
  border-right: none;
  border-left: var(--border-default);
}

.hub-header__side-text {
  font-size: var(--text-xs);
  color: var(--color-text-deep);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.hub-header__main {
  padding: var(--space-7) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.hub-header__kicker {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hub-header__kicker-line {
  width: 32px;
  height: 1px;
  background: var(--color-accent);
}

.hub-header__kicker-text {
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
}

.hub-header__h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
}

.hub-header__h1 em {
  font-style: italic;
  color: var(--color-accent);
}

.hub-header__desc {
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-text-tertiary);
  max-width: 540px;
}

.hub-header__private-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: var(--tracking-wide);
  border: var(--border-default);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  transition: color var(--transition-base), border-color var(--transition-base);
  margin-top: var(--space-2);
  width: fit-content;
}

.hub-header__private-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-subtle);
}

.hub-header__private-link svg {
  width: 13px;
  height: 13px;
  opacity: 0.5;
}


/* ----------------------------------------------------------
   CASE STUDY LIST
---------------------------------------------------------- */
.hub-list {
  border-bottom: var(--border-default);
}

.hub-project {
  display: grid;
  grid-template-columns: var(--hero-side-width) minmax(0, 1fr) 260px 300px;
  align-items: stretch;
  border-bottom: var(--border-subtle);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: inherit;
}

.hub-project:last-child {
  border-bottom: none;
}

.hub-project:hover {
  background: var(--color-bg-secondary);
}

.hub-project:hover .hub-project__name {
  color: var(--color-accent);
}

.hub-project__index {
  border-right: var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hub-project__index-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  /* Tabular nums for count-up stability */
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

.hub-project__info {
  padding: var(--space-4);
  border-right: var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-width: 0;
}

.hub-project__category {
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

.hub-project__name {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-snug);
  line-height: 1.25;
  transition: color var(--transition-fast);
}

.hub-project__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: 2px;
}

.hub-project__thumb {
  border-right: var(--border-subtle);
  background: var(--color-bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 130px;
}

.hub-project__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6);
  transition: filter var(--transition-slow);
}

.hub-project:hover .hub-project__thumb img {
  filter: saturate(1);
}

/* Subtle lift — JS-gated to fine-pointer devices only */
.hub-project__thumb.thumb-lift-enabled img {
  transition: filter var(--transition-slow), transform 350ms ease;
}

.hub-project:hover .hub-project__thumb.thumb-lift-enabled img {
  transform: scale(1.035);
}

.hub-project__outcome {
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  position: relative;
}

/* Arrow indicator — mirrors homepage project rows */
.hub-project__outcome::after {
  content: '→';
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-accent);
  opacity: 0;
  transform: translateX(-6px);
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  pointer-events: none;
}

.hub-project:hover .hub-project__outcome::after {
  opacity: 1;
  transform: translateX(0);
}

.hub-project__outcome-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

.hub-project__outcome-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 200;
  color: var(--color-accent);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
  /* Tabular nums — prevents layout jitter during count-up */
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  min-width: 3ch;
}

.hub-project__outcome-text {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--color-accent-muted);
  letter-spacing: var(--tracking-snug);
  line-height: 1.3;
}

.hub-project__outcome-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-top: 2px;
}


/* ----------------------------------------------------------
   PASSWORD GATE
---------------------------------------------------------- */
.password-gate {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: var(--space-8) var(--space-3);
  border-bottom: var(--border-default);
}

.password-gate__inner {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.password-gate__icon {
  width: 44px;
  height: 44px;
  border: var(--border-default);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}

.password-gate__icon svg {
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
}

.password-gate__label {
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
}

.password-gate__title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-snug);
  line-height: 1.3;
}

.password-gate__desc {
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-text-tertiary);
}

.password-gate__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.password-gate__input {
  width: 100%;
  background: var(--color-bg-tertiary);
  border: var(--border-default);
  border-radius: var(--radius-md);
  padding: 14px var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color var(--transition-base);
  letter-spacing: 0.08em;
}

.password-gate__input::placeholder {
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.password-gate__input:focus {
  border-color: var(--color-accent-muted);
}

.password-gate__btn {
  width: 100%;
  background: transparent;
  border: 1px solid var(--color-accent-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.password-gate__btn:hover {
  border-color: var(--color-accent-muted);
  background: var(--color-accent-deep);
}

.password-gate__error {
  font-size: var(--text-sm);
  color: var(--color-error);
  letter-spacing: 0.02em;
  display: none;
  line-height: 1.5;
}

.password-gate__error.is-visible {
  display: block;
}

.private-content {
  display: none;
}

.private-content.is-unlocked {
  display: block;
}


/* ----------------------------------------------------------
   PRIVATE BADGE
---------------------------------------------------------- */
.private-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  color: var(--color-accent-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  background: var(--color-accent-deep);
  border: 1px solid var(--color-accent-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  line-height: 1;
}


/* ----------------------------------------------------------
   RESPONSIVE — TABLET
---------------------------------------------------------- */
@media (max-width: 1024px) {
  .hub-project {
    grid-template-columns: var(--hero-side-width) minmax(0, 1fr) 200px 170px;
  }
}

/* ----------------------------------------------------------
   RESPONSIVE — MOBILE
---------------------------------------------------------- */
@media (max-width: 768px) {
  .hub-header {
    grid-template-columns: 1fr;
  }

  .hub-header__side {
    display: none;
  }

  .hub-header__main {
    padding: var(--space-5) var(--space-3);
  }

  .hub-header__desc {
    font-size: var(--text-base);
    line-height: 1.75;
    max-width: 100%;
  }

  .hub-project {
    grid-template-columns: 1fr;
  }

  .hub-project__index {
    display: none;
  }

  .hub-project__info {
    border-right: none;
    padding: var(--space-3);
  }

  .hub-project__thumb {
    border-right: none;
    border-top: var(--border-subtle);
    border-bottom: var(--border-subtle);
    min-height: 200px;
  }

  .hub-project__outcome {
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-3);
  }

  .hub-project__name {
    font-size: 1.125rem;
  }

  .password-gate__title {
    font-size: 1.5rem;
  }
}

/* ----------------------------------------------------------
   RESPONSIVE — SMALL MOBILE
---------------------------------------------------------- */
@media (max-width: 430px) {
  .hub-header__main {
    padding: var(--space-4) var(--space-3);
  }

  .password-gate__inner {
    max-width: 100%;
  }
}