/* Base Styles & Dark Theme */
body {
    background-color: #121212;
    color: #E2E8F0;
    overflow-x: hidden;
}

/* --- Fix Anchor Scrolling Behind Fixed Navbar --- */
#problem, 
#how-it-works, 
#preview, 
#contribute {
    scroll-margin-top: 50px;
}
    #subscribe {
    scroll-margin-top: 120px; 
}




/* Subtle Dark Grid Pattern */
.bg-grid-pattern {
    background-size: 50px 50px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-position: center top;
}

/* --- Tech/Robotics Background Graphics --- */
.scan-line-horizontal {
    position: absolute;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(66,133,244,0.4), transparent);
    animation: scan-v 8s linear infinite;
    z-index: 0;
    pointer-events: none;
}
@keyframes scan-v {
    0% { top: -10%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 110%; opacity: 0; }
}

.tech-node {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #4285F4;
    border-radius: 50%;
    box-shadow: 0 0 10px 2px #4285F4;
    animation: float 5s ease-in-out infinite alternate;
}

.tech-ring {
    position: absolute;
    border: 2px dashed rgba(66, 133, 244, 0.15);
    border-radius: 50%;
    pointer-events: none;
}

.neural-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, rgba(168, 85, 247, 0.2), transparent);
    height: 1px;
    width: 200px;
    transform: rotate(-45deg);
    pointer-events: none;
}

/* Glow Effects */
.blue-glow {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(66, 133, 244, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

/* Premium Glassmorphism */
.glass {
    background: rgba(26, 26, 29, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

/* --- Dark Blue Blur Animated Buttons --- */
.btn-glass-blue {
    background: rgba(10, 25, 47, 0.7); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(66, 133, 244, 0.4);
    box-shadow: 0 0 15px rgba(66, 133, 244, 0.2);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}
.btn-glass-blue::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: skewX(-20deg);
    transition: all 0.7s ease;
}
.btn-glass-blue:hover {
    background: rgba(15, 35, 70, 0.85);
    border-color: rgba(66, 133, 244, 0.8);
    box-shadow: 0 0 25px rgba(66, 133, 244, 0.6);
    transform: translateY(-3px) scale(1.02);
}
.btn-glass-blue:hover::before {
    left: 200%;
}

/* --- "Framer Motion" Style Scroll Animations --- */
.motion-hidden {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.motion-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.motion-show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Staggered Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Text Gradients */
.text-gradient {
    background: linear-gradient(135deg, #FFFFFF, #4285F4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Terminal Typing Cursor */

.type-cursor {
    display: inline-block;
    width: 4px;
   
    background-color: #4285F4;
    margin-left: 4px;
    animation: blink 1s step-end infinite;
}

/* --- NEW LOGO CSS EXTRACTION --- */
.logo-icon-only {
    width: 32px;
    height: 32px;
    overflow: hidden;
    display: inline-block;
    border-radius: 50%;
    position: relative;
    background-color: transparent;
}
.logo-icon-only img {
    height: 100%;
    width: 100%;
    object-fit: contain;
}

/* Interactive Tilt Card */
.tilt-card {
    transition: transform 0.1s ease, box-shadow 0.1s ease, border-color 0.3s ease;
    transform-style: preserve-3d;
}
.tilt-card:hover {
    border-color: rgba(66, 133, 244, 0.4);
}

/* Chart Container Requirements */
.chart-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    height: 300px;
    max-height: 400px;
}
@media (min-width: 768px) {
    .chart-container { height: 350px; }
}

/* Custom Scrollbar */
.custom-scrollbar::-webkit-scrollbar { width: 6px; }
.custom-scrollbar::-webkit-scrollbar-track { background: rgba(255,255,255,0.02); }
.custom-scrollbar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
.custom-scrollbar::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* --- Mobile Specific Additions --- */

/* Wrapper to fix mobile page jump (reflow) during typing */
.typewriter-wrapper {
    /* Fixed height ensures the box doesn't shrink/grow while text loops */
    min-height: 160px;
    width: 100%;
}

/* Circular 'Q' Toggle Button */
.mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 500;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(66, 133, 244, 0.15);
    border: 1px solid rgba(66, 133, 244, 0.3);
    transition: all 0.3s ease;
    margin-left: auto; /* Pushes it to the rightmost edge */
    order: 2; /* Ensures it stays to the right of the logo */
}
.mobile-toggle:active {
    transform: scale(0.9);
}

/* Mobile Nav Dropdown (Glass Transparent Overlay) */
.mobile-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 11, 16, 0.85); /* Deep translucent overlay */
    backdrop-filter: blur(25px); /* Heavy blur for glass effect */
    -webkit-backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 0 0 16px 16px; 
    
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.5rem 0;
    gap: 2rem;
    
    /* Animation hidden states */
    transform: translateY(-20%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}
    visibility: visible;
}