/* ========================================
   ANIMATIONS - Keyframes & Animated Effects
   ======================================== */

/* Animated Background Gradient */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--primary-gradient);
    animation: gradientShift 15s ease infinite;
    opacity: 0.15;
    z-index: -1;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(10%, 10%) rotate(120deg); }
    66% { transform: translate(-10%, -10%) rotate(240deg); }
}

/* Floating Particles Effect */
body::after {
    content: '';
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(159, 122, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(240, 147, 251, 0.1) 0%, transparent 50%);
    animation: particleFloat 20s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes particleFloat {
    0%, 100% { transform: translate(0, 0); opacity: 0.3; }
    50% { transform: translate(50px, -50px); opacity: 0.6; }
}

/* Fade In Up Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Rotating Glow Animation */
@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fade In Down Animation */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Title Pulse Animation */
@keyframes titlePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* Banner Pulse Animation */
@keyframes bannerPulse {
    0%, 100% {
        box-shadow:
            0 10px 8px rgba(102, 126, 234, 0.2),
            inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
    50% {
        box-shadow:
            0 15px 8px rgba(102, 126, 234, 0.4),
            inset 0 1px 0 rgba(255, 255, 255, 0.3);
    }
}

/* Point Down Animation (for arrows) */
@keyframes pointDown {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(8px);
    }
}

/* Check Pulse Animation */
@keyframes checkPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Slide In Animation */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Slide Up Animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Modal Pop Animation */
@keyframes modalPop {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(50px) rotateX(-10deg);
    }
    50% {
        transform: scale(1.05) translateY(-10px) rotateX(5deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) rotateX(0deg);
    }
}

/* Year Pulse Animation */
@keyframes yearPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Divider Pulse Animation */
@keyframes dividerPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ========================================
   LOADING OVERLAY & SPINNER
   ======================================== */

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 30, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    border-radius: 20px;
}

.loading-spinner {
    width: 80px;
    height: 80px;
    border: 6px solid rgba(102, 126, 234, 0.2);
    border-top: 6px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.loading-text {
    margin-top: 30px;
    color: white;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(102, 126, 234, 0.8), 0 0 20px rgba(102, 126, 234, 0.5);
    animation: textPulse 2s ease-in-out infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes textPulse {
    0%, 100% {
        opacity: 0.8;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

.loading-overlay.hidden {
    display: none;
}