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

html {
    scroll-behavior: smooth;
}

html, body {
    width: 100%;
    min-height: 100vh;
    overflow-x: hidden;
    background: linear-gradient(120deg, #191b1e 0%, #232325 100%);
    color: #f3f3f3;
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.04) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(180,180,180,0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(120,120,120,0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(25, 27, 30, 0.97) 0%, rgba(25, 27, 30, 0.7) 70%, transparent 100%);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.nav-logo {
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-link {
    color: #f3f3f3;
    text-decoration: none;
    font-size: 1.13rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    position: relative;
    transition: color 0.2s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Fixed 3D Model Container */
.fountain-model-container {
    position: fixed;
    top: 20%;
    right: 10%;
    z-index: 10;
    width: 600px;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    filter: drop-shadow(0 0 32px #222a) drop-shadow(0 2px 8px #0008);
    background: transparent;
}

/* Sections */
.fountain-intro {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 0 5%;
    padding-top: 100px;
    z-index: 2;
}

.fountain-intro h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.fountain-intro p {
    font-size: 1.3rem;
    color: #b0b0b0;
}

.fountain-phase-1 {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 5%;
    z-index: 2;
}

.fountain-phase-2 {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 5%;
    z-index: 2;
}

/* Feature Cards */
.feature-card {
    max-width: 440px;
    padding: 2.7rem 2.2rem;
    background: rgba(30, 32, 36, 0.92);
    border-radius: 22px;
    border: 1.5px solid #444;
    backdrop-filter: blur(2.5px);
    box-shadow: 0 4px 32px 0 #2228, 0 1.5px 8px 0 #1118;
    opacity: 0;
    color: #f3f3f3;
    font-weight: 500;
}

.feature-badge {
    display: inline-block;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    color: #232325;
    font-size: 0.98rem;
    font-weight: 700;
    padding: 0.45em 1.2em;
    border-radius: 1.2em;
    margin-bottom: 1.3em;
    box-shadow: 0 1px 8px 0 #fff2;
    letter-spacing: 0.06em;
}

.feature-card h2 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.2rem;
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.8;
    color: #b0b0b0;
    margin-bottom: 2rem;
}

.feature-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.stat {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.85rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Outro Section */
.fountain-outro {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    z-index: 2;
    background: linear-gradient(120deg, rgba(25, 27, 30, 0.18) 0%, rgba(80, 80, 80, 0.08) 100%);
}

.fountain-outro h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 600;
    background: linear-gradient(90deg, #fff 0%, #bbb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.fountain-outro p {
    font-size: 1.2rem;
    color: #b0b0b0;
}

/* Responsive */
@media (max-width: 900px) {
    .main-nav {
        padding: 1.5rem 2rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .fountain-model-container {
        width: 400px;
        height: 400px;
        right: 5%;
    }
    
    .feature-card {
        max-width: 90%;
        padding: 2rem;
    }
}

@media (max-width: 600px) {
    .main-nav {
        padding: 1rem;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .fountain-model-container {
        width: 300px;
        height: 300px;
        right: 2%;
    }
    
    .fountain-intro {
        padding: 0 2%;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}