:root {
    --bg-dark: #0f0f11;
    --panel-dark: #18181c;
    --accent-purple: #8257e5;
    --text-white: #ffffff;
    --text-gray: #a1a1aa;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    line-height: 1.6;
}

.navbar {
    display: flex;
    justify-content: space-between;
    padding: 15px 30px;
    align-items: center;
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-sizing: border-box;
    z-index: 100;
    background-color: rgba(24, 24, 28, 0.4);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 12px 30px;
    background-color: rgba(24, 24, 28, 0.75);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(130, 87, 229, 0.3);
    width: 85%;
}

.logo { font-size: 24px; font-weight: 800; cursor: pointer; }
.logo span { color: var(--accent-purple); }

.nav-links a { color: var(--text-white); text-decoration: none; margin-right: 20px; font-weight: 500; transition: color 0.2s;}
.nav-links a:hover, .nav-links a.active { color: var(--accent-purple); }
.btn-login { background: transparent; color: var(--text-white); border: none; font-weight: bold; cursor: pointer; margin-right: 15px;}
.btn-signup { background: var(--accent-purple); color: white; border: none; padding: 10px 20px; border-radius: 8px; font-weight: bold; cursor: pointer;}

.hero {
    text-align: center;
    padding: 140px 20px 100px;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 { font-size: 3.5rem; margin-bottom: 20px; line-height: 1.2;}
.hero h1 span { color: var(--accent-purple); }
.hero p { font-size: 1.2rem; color: var(--text-gray); margin-bottom: 40px;}

.cta-btn {
    background: linear-gradient(135deg, #8257e5, #5e35b1);
    color: white;
    border: none;
    padding: 15px 32px;
    font-size: 1.2rem;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s;
}
.cta-btn:hover { transform: scale(1.05); }

.features-section { padding: 50px 5%; text-align: center; }
.features-section h2 { font-size: 2.5rem; margin-bottom: 40px; }

.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.bento-card {
    background: rgba(24, 24, 28, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 30px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    text-align: left;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out, border-color 0.3s ease, box-shadow 0.3s ease;
}
.bento-card.in-view {
    opacity: 1;
    transform: translateY(0);
}
.bento-card.in-view:hover {
    transform: translateY(-5px);
    border-color: rgba(130, 87, 229, 0.4);
    box-shadow: 0 12px 40px rgba(130, 87, 229, 0.15);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.bento-card.large { grid-column: span 2; }
.bento-card.wide { grid-column: 1 / -1; }

.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex; justify-content: center; align-items: center;
    opacity: 0; pointer-events: none; transition: opacity 0.3s;
    z-index: 1000;
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.login-modal {
    background: rgba(24, 24, 28, 0.65);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 24px;
    width: 100%; max-width: 400px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.close-modal {
    position: absolute; top: 15px; right: 20px;
    background: transparent; border: none; color: white;
    font-size: 24px; cursor: pointer;
}

#login-form { display: flex; flex-direction: column; gap: 15px; margin-top: 20px;}
#login-form input { padding: 12px; border-radius: 8px; border: 1px solid rgba(255, 255, 255, 0.1); background: rgba(0, 0, 0, 0.3); color: white; outline: none; transition: border-color 0.3s;}
#login-form input:focus { border-color: var(--accent-purple); }
.submit-login-btn { padding: 12px; background: var(--accent-purple); color: white; border: none; border-radius: 8px; font-weight: bold; cursor: pointer;}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 20px 0;
    color: var(--text-gray);
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #333;
}

.divider span {
    padding: 0 10px;
    font-size: 14px;
}

.google-btn {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    width: 100%; padding: 12px;
    background: #ffffff; color: #000000;
    border: none; border-radius: 8px; font-weight: bold; cursor: pointer; transition: background 0.2s;
}
.google-btn:hover { background: #f1f1f1; }

@media (max-width: 768px) {
    .bento-card.large { grid-column: 1 / -1; }
    .hero h1 { font-size: 2.5rem; }
    .nav-links a { display: none; }
}