/**
 * Changelog page — uses design tokens from theme.css
 */

.changelog-hero {
    position: relative;
    padding: var(--space-section-y) 0 var(--space-6);
    background: radial-gradient(circle at top left, #fdfbfd, var(--eman-bg));
    text-align: center;
    overflow: hidden;
    border-bottom: 1px solid var(--eman-border-light);
}

.changelog-hero .chem-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.changelog-hero .chem-icon {
    position: absolute;
    color: rgba(106, 27, 154, 0.05);
    animation: changelog-float-icon 20s infinite linear;
}

.changelog-hero .c1 { top: 15%; inset-inline-start: 10%; width: 60px; animation-duration: 25s; }
.changelog-hero .c2 { top: 40%; inset-inline-end: 8%; width: 80px; animation-duration: 30s; animation-delay: -5s; }
.changelog-hero .c3 { bottom: 10%; inset-inline-start: 25%; width: 50px; animation-duration: 35s; animation-delay: -10s; }

@keyframes changelog-float-icon {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
    100% { transform: translateY(0) rotate(0deg); }
}

.changelog-hero .hero-content { position: relative; z-index: 1; }

.changelog-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(106, 27, 154, 0.08);
    color: var(--eman-purple);
    padding: 6px var(--space-3);
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.changelog-hero .hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--eman-text-dark);
    margin-bottom: var(--space-2);
}

.changelog-hero .hero-desc {
    font-size: 1.1rem;
    color: var(--eman-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.timeline-wrapper {
    max-width: 900px;
    margin: var(--space-6) auto 100px;
    padding: 0 var(--space-3);
    position: relative;
}

.timeline-track {
    position: absolute;
    top: 0;
    bottom: 0;
    inset-inline-start: 180px;
    width: 2px;
    background: linear-gradient(to bottom, #e2e8f0 0%, #e2e8f0 90%, transparent 100%);
    z-index: 0;
}

.log-entry {
    display: flex;
    margin-bottom: var(--space-6);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    animation: changelog-fade-in-up 0.6s ease forwards;
}

.log-meta {
    width: 180px;
    padding-inline-end: var(--space-5);
    text-align: end;
    flex-shrink: 0;
    position: sticky;
    top: 100px;
    height: fit-content;
}

.log-date {
    font-weight: var(--font-weight-semibold);
    font-size: 0.95rem;
    color: var(--eman-text-muted);
    display: block;
    margin-bottom: var(--space-1);
    font-family: 'Work Sans', sans-serif;
    direction: ltr;
    unicode-bidi: isolate;
}

.log-version {
    font-family: 'Work Sans', sans-serif;
    font-weight: var(--font-weight-bold);
    font-size: 0.85rem;
    background: var(--eman-bg-subtle);
    color: #475569;
    padding: var(--space-1) 10px;
    border-radius: 6px;
    display: inline-block;
    direction: ltr;
    unicode-bidi: isolate;
}

.log-marker {
    position: absolute;
    inset-inline-start: 174px;
    top: 5px;
    width: 14px;
    height: 14px;
    background: var(--eman-bg);
    border: 3px solid var(--eman-purple);
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--eman-bg);
}

.log-card {
    flex-grow: 1;
    background: var(--eman-bg);
    border: 1px solid var(--eman-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-card);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.log-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--eman-border);
}

.log-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px var(--space-3);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-3);
}

.type-new { background: var(--eman-success-bg); color: var(--eman-success); border: 1px solid #a7f3d0; }
.type-update { background: var(--eman-warning-bg); color: var(--eman-warning); border: 1px solid #fde68a; }
.type-fix { background: var(--eman-error-bg); color: var(--eman-error); border: 1px solid #fecaca; }
.type-alert { background: #fff1f2; color: #e11d48; border: 1px solid #fda4af; }

.log-title {
    font-size: 1.4rem;
    font-weight: var(--font-weight-bold);
    color: var(--eman-text-dark);
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.log-description {
    font-size: 1rem;
    color: #475569;
    line-height: var(--line-height-body);
}

html[dir="rtl"] .log-description ul {
    margin-inline-end: var(--space-3);
    list-style: disc;
}

html[dir="ltr"] .log-description ul {
    margin-inline-start: var(--space-3);
    list-style: disc;
}

.log-description li { margin-bottom: var(--space-2); }

.changelog-empty {
    text-align: center;
    padding: var(--space-5) var(--space-3);
}

.changelog-empty__icon {
    background: var(--eman-bg-subtle);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-3);
}

@keyframes changelog-fade-in-up {
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .changelog-hero { padding: var(--space-section-y-sm) 0 var(--space-5); }
    .changelog-hero .hero-title { font-size: 2rem; }
    .timeline-track,
    .log-marker { display: none; }

    .log-entry {
        flex-direction: column;
        margin-bottom: var(--space-5);
    }

    .log-meta {
        width: 100%;
        text-align: start;
        margin-bottom: var(--space-3);
        position: static;
        display: flex;
        align-items: center;
        gap: var(--space-2);
    }

    .log-card {
        width: 100%;
        padding: var(--space-3);
    }
}