/* ============================================
   Scroll Reveal Animations
   ============================================ */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Hover Glow Effects
   ============================================ */
.glass-card {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.25),
                0 0 40px rgba(125, 211, 252, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

/* Shimmer on hover */
.glass-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        transparent 40%,
        rgba(255, 255, 255, 0.04) 45%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.04) 55%,
        transparent 60%
    );
    transform: rotate(30deg) translateX(-100%);
    transition: transform 0.8s ease;
    pointer-events: none;
}

.glass-card:hover::after {
    transform: rotate(30deg) translateX(100%);
}

/* ============================================
   Button Pulse
   ============================================ */
.btn-primary {
    position: relative;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-primary), #60a5fa);
    z-index: -1;
    opacity: 0;
    filter: blur(12px);
    transition: opacity 0.3s ease;
}

.btn-primary:hover::after {
    opacity: 0.5;
}

/* ============================================
   Nav Link Hover
   ============================================ */
.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-sm);
    background: radial-gradient(circle at center, rgba(125, 211, 252, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-link:hover::before {
    opacity: 1;
}

/* ============================================
   Typing cursor for hero
   ============================================ */
.hero-subtitle::after {
    content: '|';
    animation: blink 1s step-end infinite;
    color: var(--color-primary);
    font-weight: 300;
    margin-left: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ============================================
   Page Transition
   ============================================ */
body {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================
   Post card stagger
   ============================================ */
.post-card:nth-child(1) { animation-delay: 0s; }
.post-card:nth-child(2) { animation-delay: 0.1s; }
.post-card:nth-child(3) { animation-delay: 0.2s; }
.post-card:nth-child(4) { animation-delay: 0.3s; }
.post-card:nth-child(5) { animation-delay: 0.4s; }
.post-card:nth-child(6) { animation-delay: 0.5s; }

/* ============================================
   Hover tilt (subtle)
   ============================================ */
.about-card,
.post-card,
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* ============================================
   Link glow
   ============================================ */
a.project-link::after {
    content: ' →';
    display: inline-block;
    transition: transform 0.3s ease;
}

a.project-link:hover::after {
    transform: translateX(4px);
}

/* ============================================
   Scroll indicator
   ============================================ */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    z-index: 1001;
    transition: width 0.1s linear;
    box-shadow: 0 0 10px var(--color-primary-glow);
}