/* =========================================================
   ACHIEVEMENTS PAGE
   ========================================================= */

.ach-page {
    position: relative;
    padding-top: var(--nav-h);
}

/* =========================================================
   HERO
   ========================================================= */
.ach-hero {
    padding: 60px 0 80px;
}

.ach-hero__inner {
    max-width: 900px;
}

.ach-hero__title {
    font-size: clamp(2rem, 5.5vw, 4rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin: 22px 0 26px;
}

.ach-hero__title em {
    font-style: normal;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ach-hero__desc {
    font-size: 1.08rem;
    color: var(--text-1);
    line-height: 1.75;
    max-width: 620px;
    margin-bottom: 40px;
}

.ach-hero__stats {
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
}

.ach-hero__stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ach-hero__stat-num {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ach-hero__stat-label {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-3);
}

.ach-hero__stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-2);
}

/* =========================================================
   FILTER
   ========================================================= */
.ach-filter {
    padding: 0 0 40px;
}

.ach-filter__inner {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 8px;
    background: var(--glass-bg);
    border: 1px solid var(--border-1);
    border-radius: var(--r-full);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    width: fit-content;
    max-width: 100%;
}

.ach-filter__btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 11px 22px;
    border-radius: var(--r-full);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-1);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: color var(--dur-1) var(--ease),
                background var(--dur-2) var(--ease),
                border-color var(--dur-2) var(--ease);
    white-space: nowrap;
}

.ach-filter__btn:hover {
    color: var(--text-0);
    background: var(--surface-2);
}

.ach-filter__btn.is-active {
    color: #05060a;
    background: var(--grad-accent);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.3);
}

.ach-filter__count {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: var(--r-full);
    background: var(--surface-3);
    font-family: var(--font-mono);
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.ach-filter__btn.is-active .ach-filter__count {
    background: rgba(5, 6, 10, 0.22);
    color: #05060a;
}

/* =========================================================
   ACHIEVEMENTS GRID
   ========================================================= */
.ach-grid-section {
    padding: 20px 0 60px;
}

.ach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.ach-card {
    position: relative;
    padding: 30px 26px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--border-1);
    border-radius: var(--r-lg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    overflow: hidden;
    transition: transform var(--dur-2) var(--ease),
                border-color var(--dur-2) var(--ease),
                box-shadow var(--dur-2) var(--ease);
    display: flex;
    flex-direction: column;
    isolation: isolate;
}

/* Top gradient bar on hover */
.ach-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--grad-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-3) var(--ease);
}

.ach-card:hover::before {
    transform: scaleX(1);
}

/* Radial mouse glow */
.ach-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(
        400px circle at var(--mx, 50%) var(--my, 50%),
        rgba(0, 229, 255, 0.08),
        transparent 45%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-2) var(--ease);
    z-index: -1;
}

.ach-card:hover::after {
    opacity: 1;
}

.ach-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-accent);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(0, 229, 255, 0.12);
}

/* Featured milestone cards */
.ach-card--featured {
    grid-column: span 3;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(168, 85, 247, 0.08));
    border-color: var(--border-accent);
}

.ach-card--gold {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(236, 72, 153, 0.08));
    border-color: rgba(245, 158, 11, 0.45);
}

.ach-card--pink {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.12), rgba(168, 85, 247, 0.08));
    border-color: rgba(236, 72, 153, 0.45);
}

.ach-card--featured .ach-card__title {
    font-size: 1.4rem;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ach-card--gold .ach-card__title {
    background: linear-gradient(135deg, #f59e0b, #ec4899);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ach-card--pink .ach-card__title {
    background: linear-gradient(135deg, #ec4899, #a855f7);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Badge */
.ach-card__badge {
    position: absolute;
    top: 20px;
    right: 22px;
    padding: 5px 12px;
    background: var(--accent);
    color: #05060a;
    border-radius: var(--r-full);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    z-index: 2;
}

.ach-card--gold .ach-card__badge {
    background: linear-gradient(135deg, #f59e0b, #ec4899);
    color: #ffffff;
}

/* Icon */
.ach-card__icon {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    border-radius: 15px;
    background: var(--grad-accent);
    color: #05060a;
    font-size: 1.2rem;
    margin-bottom: 20px;
    box-shadow: 0 10px 26px rgba(0, 229, 255, 0.3);
    transition: transform var(--dur-2) var(--ease);
}

.ach-card:hover .ach-card__icon {
    transform: scale(1.1) rotate(-8deg);
}

.ach-card__icon--gold {
    background: linear-gradient(135deg, #f59e0b, #ec4899);
    color: #ffffff;
    box-shadow: 0 10px 26px rgba(245, 158, 11, 0.4);
}

.ach-card__icon--pink {
    background: linear-gradient(135deg, #ec4899, #a855f7);
    color: #ffffff;
    box-shadow: 0 10px 26px rgba(236, 72, 153, 0.4);
}

.ach-card__icon--red {
    background: linear-gradient(135deg, #ef4444, #f59e0b);
    color: #ffffff;
    box-shadow: 0 10px 26px rgba(239, 68, 68, 0.35);
}

.ach-card__icon--blue {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    color: #ffffff;
    box-shadow: 0 10px 26px rgba(59, 130, 246, 0.35);
}

.ach-card__icon--green {
    background: linear-gradient(135deg, #22c55e, #10b981);
    color: #ffffff;
    box-shadow: 0 10px 26px rgba(34, 197, 94, 0.35);
}

/* Category */
.ach-card__category {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.ach-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.005em;
    color: var(--text-0);
    margin-bottom: 12px;
}

.ach-card__desc {
    font-size: 0.9rem;
    color: var(--text-1);
    line-height: 1.65;
    margin-bottom: 18px;
    flex: 1;
}

.ach-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-1);
    font-size: 0.76rem;
    color: var(--text-2);
}

.ach-card__meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.ach-card__meta i {
    color: var(--accent);
    font-size: 0.72rem;
}

/* =========================================================
   HIGHLIGHTS
   ========================================================= */
.ach-highlights {
    padding: 100px 0;
    border-top: 1px solid var(--border-1);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.highlight-card {
    position: relative;
    padding: 34px 26px 28px;
    background: var(--glass-bg);
    border: 1px solid var(--border-1);
    border-radius: var(--r-lg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: transform var(--dur-2) var(--ease),
                border-color var(--dur-2) var(--ease),
                box-shadow var(--dur-2) var(--ease);
    text-align: center;
    overflow: hidden;
}

.highlight-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-accent);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 30px rgba(0, 229, 255, 0.1);
}

.highlight-card__icon {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 13px;
    background: var(--accent-soft);
    border: 1px solid var(--border-accent);
    color: var(--accent);
    font-size: 1.05rem;
    margin: 0 auto 16px;
    transition: transform var(--dur-2) var(--ease),
                background var(--dur-2) var(--ease),
                color var(--dur-2) var(--ease);
}

.highlight-card:hover .highlight-card__icon {
    transform: scale(1.1) rotate(-8deg);
    background: var(--accent);
    color: #05060a;
}

.highlight-card__num {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.highlight-card__label {
    display: block;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    color: var(--text-1);
    line-height: 1.5;
}

/* =========================================================
   TIMELINE STRIP
   ========================================================= */
.ach-timeline {
    padding: 100px 0;
    border-top: 1px solid var(--border-1);
}

.timeline-strip {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    padding: 30px 0 10px;
}

.timeline-strip::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--border-accent) 10%,
        var(--border-accent) 90%,
        transparent 100%);
    z-index: 0;
}

.timeline-strip__item {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
}

.timeline-strip__dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-1);
    border: 2px solid var(--accent);
    box-shadow: 0 0 0 6px var(--bg-0), 0 0 20px rgba(0, 229, 255, 0.4);
    transition: transform var(--dur-2) var(--ease);
}

.timeline-strip__item:hover .timeline-strip__dot {
    transform: scale(1.35);
    box-shadow: 0 0 0 6px var(--bg-0), 0 0 30px rgba(0, 229, 255, 0.7);
}

.timeline-strip__year {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-top: 6px;
}

.timeline-strip__label {
    font-size: 0.82rem;
    line-height: 1.5;
    color: var(--text-1);
    max-width: 200px;
}

/* =========================================================
   NOTE CALLOUT
   ========================================================= */
.ach-note {
    padding: 0 0 60px;
}

.ach-note__inner {
    display: flex;
    align-items: flex-start;
    gap: 22px;
    padding: 30px 34px;
    border-radius: var(--r-lg);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.06), rgba(168, 85, 247, 0.06));
    border: 1px solid var(--border-accent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.ach-note__icon {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 13px;
    background: var(--accent-soft);
    border: 1px solid var(--border-accent);
    color: var(--accent);
    font-size: 1.15rem;
}

.ach-note__title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-0);
    margin-bottom: 6px;
}

.ach-note__desc {
    font-size: 0.94rem;
    color: var(--text-1);
    line-height: 1.65;
}

/* =========================================================
   CTA
   ========================================================= */
.ach-cta {
    padding: 40px 0;
}

.ach-cta__inner {
    position: relative;
    padding: 70px 50px;
    border-radius: var(--r-xl);
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(168, 85, 247, 0.08));
    border: 1px solid var(--border-1);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    text-align: center;
    overflow: hidden;
}

.ach-cta__inner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.15), transparent 70%);
    pointer-events: none;
}

.ach-cta__title {
    position: relative;
    z-index: 1;
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.ach-cta__title em {
    font-style: normal;
    background: var(--grad-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ach-cta__desc {
    position: relative;
    z-index: 1;
    color: var(--text-1);
    font-size: 1rem;
    margin-bottom: 32px;
    max-width: 480px;
    margin-inline: auto;
}

.ach-cta__actions {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* =========================================================
   LIGHT THEME
   ========================================================= */
[data-theme="light"] .ach-card,
[data-theme="light"] .highlight-card {
    background: rgba(255, 255, 255, 0.7);
}

[data-theme="light"] .ach-card--gold {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(236, 72, 153, 0.1));
}

[data-theme="light"] .ach-card--pink {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15), rgba(168, 85, 247, 0.1));
}

[data-theme="light"] .ach-note__inner,
[data-theme="light"] .ach-cta__inner {
    background: linear-gradient(135deg, rgba(0, 119, 255, 0.06), rgba(124, 58, 237, 0.06));
}

[data-theme="light"] .timeline-strip__dot {
    background: #ffffff;
    box-shadow: 0 0 0 6px #ffffff, 0 0 20px rgba(0, 119, 255, 0.3);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
    .ach-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ach-card--featured {
        grid-column: span 2;
    }

    .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline-strip {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 22px;
        padding-top: 20px;
    }

    .timeline-strip::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .ach-hero {
        padding: 40px 0 50px;
    }

    .ach-hero__stats {
        gap: 18px;
    }

    .ach-hero__stat-divider {
        height: 32px;
    }

    .ach-filter__inner {
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
        border-radius: var(--r-md);
        flex-wrap: nowrap;
        padding: 6px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .ach-filter__inner::-webkit-scrollbar {
        display: none;
    }

    .ach-filter__btn {
        padding: 9px 16px;
        font-size: 0.78rem;
    }

    .ach-grid {
        grid-template-columns: 1fr;
    }

    .ach-card--featured {
        grid-column: span 1;
    }

    .ach-card--featured .ach-card__title {
        font-size: 1.15rem;
    }

    .ach-highlights,
    .ach-timeline {
        padding: 60px 0;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
    }

    .timeline-strip {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .ach-note__inner {
        padding: 24px 22px;
        gap: 16px;
    }

    .ach-cta {
        padding: 20px 0;
    }

    .ach-cta__inner {
        padding: 50px 30px;
    }

    .ach-cta__actions .btn {
        flex: 1 1 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .ach-hero__stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    .ach-hero__stat-divider {
        display: none;
    }

    .ach-card {
        padding: 24px 20px 20px;
    }

    .ach-card--featured .ach-card__title {
        font-size: 1.05rem;
    }

    .ach-note__inner {
        flex-direction: column;
    }

    .ach-cta__inner {
        padding: 40px 22px;
    }
}