/* ── Search + filter bar ── */
#search-input {
    background: var(--bg-card);
    color: var(--text-text);
    border: 2px solid var(--border4);
    border-radius: 0.75rem;
    padding: 0.55rem 1rem 0.55rem 2.6rem;
    font-size: 1rem;
    width: 100%;
    max-width: 28rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}
#search-input:focus {
    border-color: var(--border2);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
#search-input::placeholder { color: var(--text-subtext); opacity: 0.7; }

.filter-btn {
    background: var(--bg-card);
    color: var(--text-subtext);
    border: 2px solid var(--border4);
    border-radius: 9999px;
    padding: 0.3rem 0.95rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.18s;
    white-space: nowrap;
}
.filter-btn:hover { border-color: var(--border2); color: var(--text-text); }
.filter-btn.active {
    background: var(--primary-600);
    color: #fff;
    border-color: var(--primary-600);
}
.dark .filter-btn.active { background: var(--primary-500); border-color: var(--primary-500); }

.sort-select {
    background: var(--bg-card);
    color: var(--text-text);
    border: 2px solid var(--border4);
    border-radius: 0.75rem;
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}
.sort-select:focus { border-color: var(--border2); }

/* ── Project card ── */
.project-card {
    background: var(--bg-card);
    border: 3px solid var(--border4);
    border-radius: 1rem;
    padding: 1.1rem 1.3rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    position: relative;
    overflow: hidden;
}
.project-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 7px;
    background: var(--primary-400);
    opacity: 0;
    border-radius: 3px 0 0 3px;
    transition: opacity 0.18s;
}
.project-card:hover { transform: translateY(-2px); box-shadow: 0 6px 24px var(--shadow-color); border-color: var(--border3); }
.project-card:hover::before { opacity: 1; }

.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; }
.card-title { font-weight: 700; font-size: 1.05rem; color: var(--text-title); line-height: 1.3; }
.card-date { font-size: 0.78rem; color: var(--text-subtext); white-space: nowrap; padding-top: 0.1rem; }
.card-summary { font-size: 0.82rem; color: var(--text-subtext); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.15rem; }
.card-skills { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.skill-tag {
    font-size: 0.7rem;
    background: var(--bg-extra1);
    color: var(--text-link);
    border-radius: 9999px;
    padding: 0.15rem 0.55rem;
    font-weight: 500;
}
.card-state {
    font-size: 0.7rem;
    padding: 0.15rem 0.6rem;
    border-radius: 9999px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.state-completed  { background: var(--bg-extra4); color: var(--text-title-extra4); }
.state-wip        { background: var(--bg-extra2); color: var(--text-title-extra2); }
.state-planned  { background: #fee2e2; color: #991b1b; }
.dark .state-planned { background: #450a0a; color: #fca5a5; }

/* count badge */
#result-count { font-size: 0.82rem; color: var(--text-subtext); }

/* empty state */
#empty-state { display: none; text-align: center; padding: 3rem; color: var(--text-subtext); }
#empty-state svg { margin: 0 auto 1rem; opacity: 0.3; }

/* ── responsive grid ── */
#project_list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}
@media (min-width: 768px)  { #project_list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1280px) { #project_list { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1600px) { #project_list { grid-template-columns: repeat(4, 1fr); } }

/* page header */
.page-hero {
    text-align: center;
    padding: 2rem 1rem 1.5rem;
}
.page-hero h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    color: var(--text-title);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 1.2rem;
}
.page-hero p { color: var(--text-subtext); font-size: clamp(0.9rem, 2vw, 1.1rem); }