/* Global Styles */
:root {
    --primary-color: #ff2d75;
    --secondary-color: #ff6b9e;
    --accent-color: #ff0055;
    --text-color: #333;
    --light-bg: #fff5f9;
    --dark-text: #4a1a2c;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Enhanced Loader Styles */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #ff2d75, #ff6b9e, #ff9a9e, #fad0c4);
    background-size: 400% 400%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: all 1s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
}

.loader-text {
    font-size: 2.5rem;
    margin: 2rem 0;
    color: white;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 80%;
    line-height: 1.4;
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    animation: textFadeIn 0.8s ease-out 0.3s forwards;
}

@keyframes textFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.loader-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.heart-loader {
    position: relative;
    width: 120px;
    height: 120px;
    margin-bottom: 2rem;
    animation: float 4s ease-in-out infinite;
}

.heart-loader::before,
.heart-loader::after {
    content: '';
    position: absolute;
    top: 0;
    width: 60px;
    height: 100px;
    background: white;
    border-radius: 60px 60px 0 0;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
}

.heart-loader::before {
    left: 60px;
    transform: rotate(-45deg);
    transform-origin: 0 100%;
    animation: heartbeat 1.5s ease-in-out infinite;
}

.heart-loader::after {
    left: 0;
    transform: rotate(45deg);
    transform-origin: 100% 100%;
    animation: heartbeat 1.5s ease-in-out -0.3s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: rotate(-45deg) scale(1); }
    25% { transform: rotate(-45deg) scale(1.1); }
    50% { transform: rotate(-45deg) scale(1); }
    75% { transform: rotate(-45deg) scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.loading-bar {
    width: 0%;
    height: 6px;
    background: white;
    border-radius: 3px;
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.loading-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    animation: loadingShine 1.5s infinite;
}

@keyframes loadingShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Floating particles */
.loader-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.loader-particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    pointer-events: none;
    animation: floatParticle 15s infinite linear;
}

@keyframes floatParticle {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) scale(1);
        opacity: 0;
    }
}

/* Scroll Hint */
.scroll-hint {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--primary-color);
    opacity: 0;
    animation: fadeInUp 1s ease-out 1s forwards;
    z-index: 100;
    pointer-events: none;
}

.scroll-hint span {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(255, 45, 117, 0.3);
}

.scroll-hint .mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 15px;
    position: relative;
    animation: bounce 2s infinite;
}

.scroll-hint .mouse::before {
    content: '';
    width: 6px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 3px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes scroll {
    0% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, 15px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

/* Container Styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s, transform 1s;
    position: relative;
}

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

/* Level Animations */
.level {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.level:nth-child(1) { transition-delay: 0.1s; }
.level:nth-child(2) { transition-delay: 0.2s; }
.level:nth-child(3) { transition-delay: 0.3s; }
.level:nth-child(4) { transition-delay: 0.4s; }
.level:nth-child(5) { transition-delay: 0.5s; }

/* Header Styles */
header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 2rem;
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    color: white;
    transform: translateY(0);
    transition: transform 0.3s ease;
}

header:hover {
    transform: translateY(-5px);
}

.title {
    font-family: 'Dancing Script', cursive;
    font-size: 4rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

/* Timeline Styles */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(255, 45, 117, 0.5);
}

.level {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    opacity: 0;
    transform: translateX(-50px);
    transition: all 1s ease;
}

.level.visible {
    opacity: 1;
    transform: translateX(0);
}

.level:nth-child(odd) {
    left: 0;
}

.level:nth-child(even) {
    left: 50%;
    transform: translateX(50px);
}

.level:nth-child(even).visible {
    transform: translateX(0);
}

.level::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    right: -17px;
    background-color: white;
    border: 4px solid var(--primary-color);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px rgba(255, 45, 117, 0.5);
}

.level:nth-child(even)::after {
    left: -12px;
}

.level-content {
    padding: 20px 30px;
    background-color: white;
    position: relative;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.level-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(255, 45, 117, 0.2);
}

.level h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.level p {
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.progress {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 600;
    animation: pulse 2s infinite;
}

/* Footer Styles */
footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    color: var(--dark-text);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s, transform 1s;
    transition-delay: 0.5s;
}

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

/* Responsive Design */
/* Mobile Styles */
@media screen and (max-width: 768px) {
    :root {
        --mobile-padding: 1rem;
    }

    /* Base Typography */
    html {
        font-size: 14px;
    }

    .title {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 0.5rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    /* Timeline Adjustments */
    .timeline::after {
        left: 20px;
    }

    .level {
        width: 100%;
        padding: 0 0 0 50px;
        margin-bottom: 2rem;
    }

    .level::after {
        left: 8px;
        width: 20px;
        height: 20px;
    }

    .level-content {
        padding: 1rem;
    }

    .level h2 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }

    /* Header Adjustments */
    header {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }

    /* Container Padding */
    .container {
        padding: 1rem;
    }

    /* Loader Text */
    .loader-text {
        font-size: 1.5rem;
        padding: 0 1rem;
    }

    /* Scroll Hint */
    .scroll-hint {
        bottom: 1rem;
    }

    .scroll-hint span {
        font-size: 0.8rem;
    }

    .scroll-hint .mouse {
        width: 24px;
        height: 40px;
    }

    /* Footer */
    footer {
        padding: 1rem;
        font-size: 0.9rem;
    }

    /* Heart Loader */
    .heart-loader {
        width: 80px;
        height: 80px;
        margin-bottom: 1rem;
    }

    .heart-loader::before,
    .heart-loader::after {
        width: 40px;
        height: 70px;
    }

    .heart-loader::before {
        left: 40px;
    }

    /* Loading Bar */
    .loading-bar {
        height: 4px;
        margin-top: 1.5rem;
    }

    /* Adjust for very small devices */
    @media screen and (max-width: 360px) {
        .title {
            font-size: 1.8rem;
        }
        
        .loader-text {
            font-size: 1.3rem;
        }
        
        .level {
            padding-left: 40px;
        }
        
        .level::after {
            width: 16px;
            height: 16px;
            left: 4px;
        }
    }
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #ff9a9e, #fad0c4, #ffd1ff, #a8edea);
    background-size: 400% 400%;
    z-index: -1;
    animation: gradientBG 15s ease infinite;
    opacity: 0.3;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Floating Hearts */
.heart {
    position: fixed;
    pointer-events: none;
    opacity: 0.6;
    animation: float 4s ease-in-out infinite;
    z-index: -1;
    /* Prevent hearts from being too large on mobile */
    max-width: 30px;
    max-height: 30px;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* Confetti Effect */
.confetti {
    position: fixed;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    opacity: 0.7;
    z-index: 9999;
    animation: confettiFall 5s linear forwards;
    /* Optimize for mobile */
    will-change: transform, opacity;
    backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

@keyframes confettiFall {
    to { transform: translateY(100vh) rotate(720deg); }
}