/* ============================================
   ANIMATIONS
   ============================================ */

/* ---- Fade In ---- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ---- Scale ---- */
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes popIn {
    0% { opacity: 0; transform: scale(0.8); }
    70% { transform: scale(1.05); }
    100% { opacity: 1; transform: scale(1); }
}

/* ---- Glow Pulse ---- */
@keyframes glowPulse {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(99, 102, 241, 0.2); }
}

/* ---- Float ---- */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ---- Rotate ---- */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ---- Counter Roll ---- */
@keyframes counterRoll {
    0% { transform: translateY(100%); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

/* ---- Gradient Flow ---- */
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ---- Border Glow ---- */
@keyframes borderGlow {
    0%, 100% { border-color: var(--border-primary); }
    50% { border-color: var(--accent-primary); }
}

/* ============================================
   INTERSECTION OBSERVER TRIGGERS
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* Stagger children */
.stagger-children .reveal:nth-child(1) { transition-delay: 0s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.2s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.3s; }
.stagger-children .reveal:nth-child(5) { transition-delay: 0.4s; }
.stagger-children .reveal:nth-child(6) { transition-delay: 0.5s; }

/* ============================================
   HOVER EFFECTS
   ============================================ */

/* Lift on hover */
.hover-lift { transition: transform var(--transition-base), box-shadow var(--transition-base); }
.hover-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

/* Glow on hover */
.hover-glow { transition: box-shadow var(--transition-base); }
.hover-glow:hover { box-shadow: var(--shadow-glow); }

/* Scale on hover */
.hover-scale { transition: transform var(--transition-base); }
.hover-scale:hover { transform: scale(1.03); }

/* 3D tilt effect */
.hover-tilt {
    transition: transform var(--transition-base);
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* ============================================
   HERO ANIMATIONS
   ============================================ */
.hero-parallax-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-glow-1 {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12), transparent 70%);
    top: -150px;
    left: -100px;
    animation: float 8s ease-in-out infinite;
}

.hero-glow-2 {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.1), transparent 70%);
    bottom: -100px;
    right: -80px;
    animation: float 10s ease-in-out infinite 2s;
}

.hero-glow-3 {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.08), transparent 70%);
    top: 40%;
    right: 20%;
    animation: float 12s ease-in-out infinite 4s;
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-primary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm { width: 18px; height: 18px; border-width: 2px; }
.spinner-lg { width: 48px; height: 48px; border-width: 4px; }

/* Loading overlay */
.loading-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
    border-radius: inherit;
    z-index: 10;
}

/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--surface-1);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar .progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    transition: width 1s ease;
}

/* ============================================
   PAGE TRANSITIONS
   ============================================ */
.page-enter { animation: fadeInUp 0.5s ease both; }
.page-section { animation: fadeInUp 0.6s ease both; }