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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #000000;
    color: #ffffff;
    overflow-x: hidden;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    opacity: 0.15;
}

.bg-animation span {
    position: absolute;
    display: block;
    width: 2px;
    height: 2px;
    background: #ffffff;
    animation: float 20s infinite;
    box-shadow: 0 0 10px #ffffff;
}

.bg-animation span:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
}

.bg-animation span:nth-child(2) {
    left: 20%;
    animation-delay: 2s;
    width: 3px;
    height: 3px;
}

.bg-animation span:nth-child(3) {
    left: 30%;
    animation-delay: 4s;
}

.bg-animation span:nth-child(4) {
    left: 40%;
    animation-delay: 0s;
    width: 1px;
    height: 1px;
}

.bg-animation span:nth-child(5) {
    left: 50%;
    animation-delay: 3s;
}

.bg-animation span:nth-child(6) {
    left: 60%;
    animation-delay: 5s;
    width: 2px;
    height: 2px;
}

.bg-animation span:nth-child(7) {
    left: 70%;
    animation-delay: 1s;
}

.bg-animation span:nth-child(8) {
    left: 80%;
    animation-delay: 6s;
    width: 3px;
    height: 3px;
}

.bg-animation span:nth-child(9) {
    left: 90%;
    animation-delay: 2s;
}

.bg-animation span:nth-child(10) {
    left: 15%;
    animation-delay: 4s;
}

.bg-animation span:nth-child(11) {
    left: 75%;
    animation-delay: 3s;
    width: 2px;
    height: 2px;
}

.bg-animation span:nth-child(12) {
    left: 45%;
    animation-delay: 5s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

/* Grid Pattern Overlay */
.grid-overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

/* Navigation */
nav {
    position: fixed;
    width: 100%;
    padding: 25px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    font-size: 26px;
    font-weight: 300;
    letter-spacing: 3px;
    color: #ffffff;
    text-transform: uppercase;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 40px;
    height: 1px;
    background: #ffffff;
}

.nav-links {
    display: flex;
    gap: 50px;
    list-style: none;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 300;
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: all 0.3s;
    position: relative;
    opacity: 0.7;
}

.nav-links a::before {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 50%;
    background: #ffffff;
    transition: all 0.3s;
    transform: translateX(-50%);
}

.nav-links a:hover::before {
    width: 100%;
}

.nav-links a:hover {
    opacity: 1;
}

.nav-btn {
    padding: 12px 35px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    font-weight: 300;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #ffffff;
    transition: all 0.3s;
    z-index: -1;
}

.nav-btn:hover::before {
    left: 0;
}

.nav-btn:hover {
    color: #000000;
    border-color: #ffffff;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content {
    z-index: 1;
    max-width: 1000px;
}

.hero-subtitle {
    font-size: 12px;
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 30px;
    opacity: 0.5;
    font-weight: 300;
}

.hero h1 {
    font-size: 80px;
    font-weight: 200;
    margin-bottom: 30px;
    letter-spacing: 10px;
    line-height: 1.2;
    text-transform: uppercase;
}

.hero-divider {
    width: 100px;
    height: 1px;
    background: #ffffff;
    margin: 40px auto;
    opacity: 0.3;
}

.hero p {
    font-size: 18px;
    margin-bottom: 60px;
    font-weight: 300;
    letter-spacing: 2px;
    line-height: 1.8;
    opacity: 0.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 18px 50px;
    background: #ffffff;
    border: 1px solid #ffffff;
    color: #000000;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 3px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #000000;
    transition: all 0.3s;
    z-index: -1;
}

.btn-primary:hover::before {
    left: 0;
}

.btn-primary:hover {
    color: #ffffff;
    background: transparent;
}

.btn-secondary {
    padding: 18px 50px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 3px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    border-color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

/* Coming Soon Section */
.coming-soon {
    position: relative;
    padding: 120px 50px;
    text-align: center;
}

.coming-soon h2 {
    font-size: 48px;
    font-weight: 200;
    margin-bottom: 20px;
    letter-spacing: 8px;
    text-transform: uppercase;
}

.coming-soon-divider {
    width: 60px;
    height: 1px;
    background: #ffffff;
    margin: 30px auto;
    opacity: 0.3;
}

.coming-soon p {
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 2px;
    opacity: 0.6;
    max-width: 600px;
    margin: 0 auto 60px;
    line-height: 1.8;
}

.progress-container {
    max-width: 800px;
    margin: 0 auto;
}

.progress-item {
    margin-bottom: 40px;
    text-align: left;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.progress-title {
    font-size: 14px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 300;
}

.progress-percentage {
    font-size: 14px;
    opacity: 0.5;
    font-weight: 300;
}

.progress-bar {
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #ffffff;
    transition: width 1s ease;
}

/* Features Section */
.features {
    position: relative;
    padding: 120px 50px;
    background: rgba(255, 255, 255, 0.02);
}

.features-content {
    max-width: 1400px;
    margin: 0 auto;
}

.features h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 200;
    margin-bottom: 20px;
    letter-spacing: 8px;
    text-transform: uppercase;
}

.features-divider {
    width: 60px;
    height: 1px;
    background: #ffffff;
    margin: 30px auto 80px;
    opacity: 0.3;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 60px;
}

.feature-item {
    text-align: center;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
    background: rgba(0, 0, 0, 0.5);
}

.feature-item:hover {
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.02);
}

.feature-number {
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 30px;
    opacity: 0.3;
    font-weight: 300;
}

.feature-title {
    font-size: 20px;
    margin-bottom: 20px;
    font-weight: 300;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.feature-desc {
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 1px;
    line-height: 1.8;
    opacity: 0.6;
}

/* Footer */
footer {
    position: relative;
    padding: 60px 50px;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.8);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 4px;
    margin-bottom: 30px;
    text-transform: uppercase;
}

.footer-divider {
    width: 50px;
    height: 1px;
    background: #ffffff;
    margin: 30px auto;
    opacity: 0.2;
}

footer p {
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 2px;
    opacity: 0.4;
    line-height: 2;
}

.disclaimer {
    margin-top: 30px;
    font-size: 11px;
    opacity: 0.3;
    font-style: italic;
}

#birthday-quiz-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 10000;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-family: 'Inter', sans-serif;
    opacity: 0;
    transition: opacity 1s ease;
}

#birthday-quiz-overlay.visible {
    opacity: 1;
}

.quiz-step {
    display: none;
    text-align: center;
    width: 100%;
    max-width: 600px;
    padding: 20px;
    animation: fadeIn 0.5s ease;
}

.quiz-step.active {
    display: block;
}

.intro-text,
.final-text {
    font-size: 3rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0;
    transition: opacity 0.5s ease;
    text-align: center;
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
}

.intro-text.visible,
.final-text.visible {
    opacity: 1;
}

.question-title {
    font-size: 2rem;
    margin-bottom: 40px;
    font-weight: 700;
}

.options-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.options-container.single-option {
    grid-template-columns: 1fr;
    max-width: 300px;
    margin: 0 auto;
}

.option-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 20px;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.option-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.option-btn:active {
    transform: scale(0.98);
}

.shake {
    animation: shake 0.5s cubic-bezier(.36, .07, .19, .97) both;
}

@keyframes shake {

    10%,
    90% {
        transform: translate3d(-1px, 0, 0);
    }

    20%,
    80% {
        transform: translate3d(2px, 0, 0);
    }

    30%,
    50%,
    70% {
        transform: translate3d(-4px, 0, 0);
    }

    40%,
    60% {
        transform: translate3d(4px, 0, 0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.love-slider-container {
    width: 100%;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    position: relative;
    margin-top: 40px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

#love-slider-thumb {
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: -2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    cursor: grab;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.instruction-text {
    margin-top: 15px;
    font-size: 0.9rem;
    opacity: 0.7;
    text-align: center;
}

@media (max-width: 768px) {
    .options-container {
        grid-template-columns: 1fr;
    }

    .intro-text,
    .final-text {
        font-size: 2rem;
    }
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        padding: 20px 25px;
    }

    .nav-links {
        display: none;
    }

    .logo {
        font-size: 20px;
    }

    .hero h1 {
        font-size: 42px;
        letter-spacing: 5px;
    }

    .hero p {
        font-size: 16px;
    }

    .coming-soon,
    .features {
        padding: 80px 25px;
    }

    .coming-soon h2,
    .features h2 {
        font-size: 32px;
        letter-spacing: 4px;
    }

    .features-grid {
        gap: 40px;
    }
}