/* ============================================
   MST Singapore — Components v3
   ============================================ */

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--text-sm);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
    position: relative;
    overflow: hidden;
}

.btn-sm { padding: 10px 22px; font-size: var(--text-sm); border-radius: var(--radius-lg); }
.btn-md { padding: 13px 28px; }
.btn-lg { padding: 16px 36px; font-size: var(--text-base); }

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg);
    font-weight: 700;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    border-radius: inherit;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5), 0 12px 30px rgba(0, 212, 255, 0.25);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur);
}
.btn-secondary:hover {
    background: var(--color-surface-raised);
    border-color: var(--color-border-hover);
    color: var(--color-primary);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.4);
    color: #ffffff;
}

/* === Tags === */
.tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

.tag--blue    { background: rgba(56, 189, 248, 0.12); color: #0369a1; border-color: rgba(56, 189, 248, 0.25); }
.tag--purple  { background: rgba(167, 139, 250, 0.12); color: #6d28d9; border-color: rgba(167, 139, 250, 0.25); }
.tag--amber   { background: rgba(251, 191, 36, 0.12); color: #b45309; border-color: rgba(251, 191, 36, 0.25); }
.tag--emerald { background: rgba(52, 211, 153, 0.12); color: #047857; border-color: rgba(52, 211, 153, 0.25); }
.tag--rose    { background: rgba(251, 113, 133, 0.12); color: #be123c; border-color: rgba(251, 113, 133, 0.25); }

/* === Dimension Badge === */
.platform-card__dimension {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    background: rgba(148, 163, 184, 0.06);
    border: 1px solid rgba(148, 163, 184, 0.08);
    padding: 4px 12px;
    border-radius: var(--radius-full);
}

/* === Platform Cards === */
.platform-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: var(--radius-2xl);
    padding: var(--space-5);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.03);
}

/* Top color bar — always visible */
.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    opacity: 1;
    transition: height var(--transition-slow);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    z-index: 2;
}
.platform-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 120px;
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.platform-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 16px 40px rgba(0, 0, 0, 0.04);
}
.platform-card:hover::before {
    height: 4px;
}
.platform-card:hover::after { opacity: 1; }

/* Color variants */
.platform-card--blue::before    { background: var(--color-blue); }
.platform-card--purple::before  { background: var(--color-purple); }
.platform-card--amber::before   { background: var(--color-amber); }
.platform-card--emerald::before { background: var(--color-emerald); }
.platform-card--rose::before    { background: var(--color-rose); }

.platform-card--blue::after    { background: radial-gradient(ellipse at 50% 0%, rgba(56,189,248,0.06), transparent 70%); }
.platform-card--purple::after  { background: radial-gradient(ellipse at 50% 0%, rgba(167,139,250,0.06), transparent 70%); }
.platform-card--amber::after   { background: radial-gradient(ellipse at 50% 0%, rgba(251,191,36,0.06), transparent 70%); }
.platform-card--emerald::after { background: radial-gradient(ellipse at 50% 0%, rgba(52,211,153,0.06), transparent 70%); }
.platform-card--rose::after    { background: radial-gradient(ellipse at 50% 0%, rgba(251,113,133,0.06), transparent 70%); }

.platform-card__icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-3);
    position: relative;
    z-index: 1;
}

.platform-card--blue .platform-card__icon    { background: rgba(56, 189, 248, 0.15); color: #0284c7; }
.platform-card--purple .platform-card__icon  { background: rgba(167, 139, 250, 0.15); color: #7c3aed; }
.platform-card--amber .platform-card__icon   { background: rgba(251, 191, 36, 0.15); color: #d97706; }
.platform-card--emerald .platform-card__icon { background: rgba(52, 211, 153, 0.15); color: #059669; }
.platform-card--rose .platform-card__icon    { background: rgba(251, 113, 133, 0.15); color: #e11d48; }

.platform-card__label {
    display: block;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--color-text-tertiary);
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
}

.platform-card__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-1);
    color: var(--color-text);
    position: relative;
    z-index: 1;
}

.platform-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-3);
    position: relative;
    z-index: 1;
}

.platform-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--space-3);
    position: relative;
    z-index: 1;
}

.platform-card__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 1;
}

.platform-card--blue .platform-card__link    { color: var(--color-blue); }
.platform-card--purple .platform-card__link  { color: var(--color-purple); }
.platform-card--amber .platform-card__link   { color: var(--color-amber); }
.platform-card--emerald .platform-card__link { color: var(--color-emerald); }
.platform-card--rose .platform-card__link    { color: var(--color-rose); }
.platform-card__link:hover { gap: 12px; }

/* === News Cards === */
.news-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.06);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.03);
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 16px 40px rgba(0, 0, 0, 0.04);
}

.news-card__image {
    overflow: hidden;
    aspect-ratio: 16/10;
}
.news-card__image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform var(--transition-slow);
}
.news-card:hover .news-card__image img { transform: scale(1.05); }

.news-card__body {
    padding: var(--space-3) var(--space-4);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-card__date {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    margin-bottom: var(--space-1);
}

.news-card__tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-1);
    width: fit-content;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}
.news-card__tag--blue   { background: rgba(56, 189, 248, 0.1); color: var(--color-blue); }
.news-card__tag--purple { background: rgba(167, 139, 250, 0.1); color: var(--color-purple); }
.news-card__tag--amber  { background: rgba(251, 191, 36, 0.1); color: var(--color-amber); }

.news-card__title {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-1);
    line-height: var(--leading-snug);
    color: var(--color-text);
}

.news-card__excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    line-height: var(--leading-normal);
}

/* === Metrics === */
.metric {
    text-align: center;
}
.metric__number {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    letter-spacing: var(--tracking-tighter);
    line-height: 1;
    margin-bottom: 6px;
    color: #ffffff;
}
.metric__label {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.45);
    font-weight: 500;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}
.metric__divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, transparent, rgba(0, 153, 204, 0.15), transparent);
    align-self: center;
}