:root {
    --bg-color: #0b0c10;
    --text-color: #c5c6c7;
    --accent-color: #66fcf1;
    --secondary-color: #45a29e;
    --dark-panel: #1f2833;
    --glow-shadow: 0 0 15px rgba(102, 252, 241, 0.4);
    --transition-speed: 0.3s;
}

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

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

/* Header & Nav */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    background: rgba(11, 12, 16, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #ffffff;
}

.logo span {
    color: var(--accent-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}

nav a:hover {
    color: var(--accent-color);
    text-shadow: var(--glow-shadow);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    margin-top: 60px;
}

.hero-content {
    max-width: 50%;
}

.hero-content h1 {
    font-size: 4rem;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.8;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition-speed) ease;
    box-shadow: var(--glow-shadow);
}

.btn:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 25px rgba(102, 252, 241, 0.8);
    transform: translateY(-2px);
}

/* Robot */
.robot-container {
    width: 350px;
    height: 350px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#robot {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 30px rgba(69, 162, 158, 0.3));
    transition: filter 0.3s;
}

#robot:hover {
    filter: drop-shadow(0 0 45px rgba(102, 252, 241, 0.6));
}

#left-pupil, #right-pupil {
    transition: transform 0.1s ease-out;
}

/* Showcase Section */
.showcase-section {
    padding: 6rem 10%;
    background: linear-gradient(to bottom, #0b0c10, #13151c);
}

.showcase-section h2 {
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 3rem;
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.centered-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    height: auto;
    padding: 2rem 0;
}

/* Smartphone Mockup */
.smartphone-mockup {
    position: relative;
    width: 260px;
    height: 530px;
    border: 12px solid #111;
    border-radius: 35px;
    background: #000;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 25px rgba(102, 252, 241, 0.2);
    overflow: hidden;
    transition: opacity var(--transition-speed) ease, transform 0.3s ease;
}

.smartphone-mockup .notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 110px;
    height: 25px;
    background: #111;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    z-index: 10;
}

.smartphone-mockup video {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Fill the screen for vertical video look */
    background: #000;
}

/* Nav Buttons */
.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    opacity: 0.4;
    padding: 0 1rem;
    user-select: none;
}

.nav-btn:hover {
    color: var(--accent-color);
    opacity: 1;
    text-shadow: var(--glow-shadow);
    transform: scale(1.1);
}

.nav-btn:active {
    transform: scale(0.95);
}

/* Centered Metadata Info */
.centered-info {
    text-align: center;
    max-width: 600px;
    margin: 2rem auto 0;
    padding: 1.5rem;
    background: var(--dark-panel);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: opacity var(--transition-speed) ease;
}

.centered-info h3 {
    font-size: 2.2rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.centered-info p#video-client {
    color: var(--accent-color);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.centered-info p#video-description {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.8;
}

/* Responsive Design Overrides */
@media (max-width: 768px) {
    .centered-showcase {
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .smartphone-mockup {
        width: 220px;
        height: 450px;
    }
    
    .nav-btn {
        font-size: 3.5rem;
    }
    
    .hero-section {
        flex-direction: column-reverse;
        text-align: center;
        justify-content: center;
        gap: 2rem;
        padding-top: 100px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .nav ul {
        gap: 1rem;
    }
}