/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --accent: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-cyan: #06b6d4;
    --gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --font: 'Outfit', sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: 0.3s ease; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ===== Cursor Glow ===== */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 1.5rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: 0.3s ease;
}
.navbar.scrolled { padding: 0.75rem 1.5rem; background: rgba(10, 10, 15, 0.95); }
.nav-container { max-width: 1400px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 0.5rem; font-size: 1.5rem; font-weight: 700; margin-right: 3rem; }
.logo-icon { font-size: 1.5em; animation: float 3s ease-in-out infinite; }
.logo-text .accent { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; gap: 2rem; }
.nav-link { font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); position: relative; padding: 0.5rem 0; }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--gradient); transition: 0.3s ease; }
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.cta-btn { padding: 0.5rem 1.5rem; background: var(--gradient); color: white; font-size: 0.875rem; font-weight: 600; border-radius: 50px; transition: 0.3s ease; }
.cta-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.mobile-menu-btn { display: none; flex-direction: column; gap: 5px; padding: 10px; background: transparent; }
.mobile-menu-btn span { width: 25px; height: 2px; background: var(--text-primary); transition: 0.3s ease; }

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 8rem 1.5rem 3rem;
}
.hero-bg-effects { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: pulse-slow 8s ease-in-out infinite;
}
.orb-1 { width: 600px; height: 600px; background: rgba(99, 102, 241, 0.2); top: -200px; left: -200px; }
.orb-2 { width: 500px; height: 500px; background: rgba(168, 85, 247, 0.15); bottom: -150px; right: -150px; animation-delay: 2s; }
.hero-content { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; position: relative; z-index: 1; }
.hero-text { display: flex; flex-direction: column; gap: 1.5rem; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    width: fit-content;
    animation: fadeInUp 0.6s ease forwards;
}
.badge-dot { width: 8px; height: 8px; background: #22c55e; border-radius: 50%; animation: pulse 2s ease infinite; }
.hero-title { font-size: 4rem; font-weight: 800; line-height: 1.1; animation: fadeInUp 0.6s ease 0.1s forwards; opacity: 0; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-description { font-size: 1.125rem; color: var(--text-secondary); max-width: 500px; animation: fadeInUp 0.6s ease 0.2s forwards; opacity: 0; }
.hero-buttons { display: flex; gap: 1rem; animation: fadeInUp 0.6s ease 0.3s forwards; opacity: 0; }
.btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.875rem 1.5rem; font-size: 1rem; font-weight: 600; border-radius: var(--radius-md); transition: 0.3s ease; }
.btn svg { width: 20px; height: 20px; }
.btn-primary { background: var(--gradient); color: white; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-glow); }
.btn-glass { background: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border); backdrop-filter: blur(10px); }
.btn-glass:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.btn-full { width: 100%; justify-content: center; }
.hero-stats { display: flex; align-items: center; gap: 1.5rem; animation: fadeInUp 0.6s ease 0.4s forwards; opacity: 0; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.75rem; font-weight: 700; background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.875rem; color: var(--text-tertiary); }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* ===== Spline Container ===== */
.hero-spline { position: relative; height: 550px; animation: fadeIn 1s ease 0.3s forwards; opacity: 0; }
.spline-wrapper { position: relative; width: 100%; height: 100%; border-radius: var(--radius-lg); overflow: hidden; }
.spline-wrapper iframe { width: 100%; height: calc(100% + 60px); border: none; margin-bottom: -60px; }

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    animation: fadeIn 1s ease 0.8s forwards, bounce 2s ease infinite 1s;
    opacity: 0;
}
.scroll-mouse { width: 24px; height: 40px; border: 2px solid var(--text-tertiary); border-radius: 12px; position: relative; }
.scroll-wheel { width: 4px; height: 8px; background: var(--text-tertiary); border-radius: 2px; position: absolute; top: 8px; left: 50%; transform: translateX(-50%); animation: scrollWheel 2s ease infinite; }

/* ===== Features Section ===== */
.features { padding: 8rem 0; background: var(--bg-secondary); position: relative; }
.features::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag { display: inline-block; padding: 0.5rem 1rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: 50px; font-size: 0.875rem; color: var(--accent); margin-bottom: 1rem; }
.section-title { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }
.section-desc { font-size: 1.125rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem; /* Padding adjusted for rectangle look */
    transition: 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    /* justify-content: space-between; If you want same height */
    text-align: left;
}
.feature-card::before { content: ''; position: absolute; inset: 0; background: var(--gradient); opacity: 0; transition: 0.3s ease; }
.feature-card:hover { transform: translateY(-8px); border-color: var(--accent); }
.feature-card:hover::before { opacity: 0.05; }
.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1, #818cf8);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    position: relative;
}
.feature-icon.icon-purple { background: linear-gradient(135deg, #8b5cf6, #a78bfa); }
.feature-icon.icon-pink { background: linear-gradient(135deg, #ec4899, #f472b6); }
.feature-icon.icon-cyan { background: linear-gradient(135deg, #06b6d4, #22d3ee); }
.feature-icon svg { width: 24px; height: 24px; stroke: white; }
.feature-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; position: relative; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); position: relative; line-height: 1.5; }

/* ===== About Section (Education & Training) ===== */
.about { padding: 8rem 0; position: relative; }
.about-container { max-width: 1000px; margin: 0 auto; }
.about-header { text-align: center; margin-bottom: 4rem; }
.about-header .section-desc { font-size: 1.2rem; line-height: 1.8; margin-top: 1.5rem; color: var(--text-secondary); }
.about-header strong { color: var(--text-primary); font-weight: 600; }

.training-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.training-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.training-card::hover { transform: translateY(-5px); border-color: var(--accent); box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.3); }

.t-icon { font-size: 2rem; margin-bottom: 1rem; display: inline-block; }
.t-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text-primary); }
.t-sub { font-size: 0.85rem; color: var(--accent); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 1rem; display: block; }
.t-desc { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; flex-grow: 1; margin-bottom: 1.5rem; }
.t-list { list-style: none; margin-bottom: 1.5rem; }
.t-list li { padding-left: 1.5rem; position: relative; font-size: 0.9rem; color: var(--text-tertiary); margin-bottom: 0.5rem; }
.t-list li::before { content: '•'; color: var(--accent); position: absolute; left: 0; font-weight: bold; }

.btn-training {
    width: 100%;
    margin-top: auto;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: 0.3s;
    text-align: center;
}
.training-card:hover .btn-training { background: var(--accent); border-color: var(--accent); color: white; }

@media (max-width: 768px) {
    .training-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* ===== Contact Section ===== */
.contact { padding: 8rem 0; background: var(--bg-secondary); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info p { font-size: 1.125rem; color: var(--text-secondary); }
.contact-cards { display: flex; flex-direction: column; gap: 1rem; margin-top: 1rem; }
.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: 0.3s ease;
}
.contact-card:hover { border-color: var(--accent); transform: translateX(5px); }
.c-icon { font-size: 1.5rem; }
.c-label { display: block; font-size: 0.75rem; color: var(--text-tertiary); margin-bottom: 0.25rem; }
.c-value { font-weight: 500; }
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.contact-form h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.5rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: 0.3s ease;
    resize: none;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1); }
.contact-form input::placeholder, .contact-form textarea::placeholder { color: var(--text-tertiary); }

/* ===== Footer ===== */
.footer { background: var(--bg-primary); border-top: 1px solid var(--border); padding: 4rem 1.5rem 2rem; }
.footer-top { display: flex; justify-content: space-between; gap: 4rem; padding-bottom: 3rem; border-bottom: 1px solid var(--border); }
.footer-brand p { color: var(--text-tertiary); margin-top: 1rem; }
.footer-links { display: flex; gap: 4rem; }
.footer-links div { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-links h4 { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 0.5rem; }
.footer-links a { font-size: 0.875rem; color: var(--text-tertiary); }
.footer-links a:hover { color: var(--text-primary); }
.footer-bottom { display: flex; justify-content: center; padding-top: 2rem; }
.footer-bottom p { font-size: 0.875rem; color: var(--text-tertiary); }

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes pulse-slow { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.8; } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); } 40% { transform: translateX(-50%) translateY(-10px); } 60% { transform: translateX(-50%) translateY(-5px); } }
@keyframes scrollWheel { 0% { top: 8px; opacity: 1; } 100% { top: 20px; opacity: 0; } }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text { align-items: center; }
    .hero-spline { height: 400px; }
    .hero-stats { justify-content: center; }
    /* features-grid no transformation here to keep it 4 columns until 900px */
    .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .about-visual { order: -1; height: 300px; }
}
@media (max-width: 900px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    /* Mobile Header Fix - Force Visibility */
    .navbar { 
        position: fixed !important; 
        top: 0; 
        left: 0;
        width: 100%;
        padding: 0.8rem 1rem; 
        background: #0a0a0f !important; /* Solid background, no transparency */
        z-index: 9999 !important; /* Always on top of everything */
        border-bottom: 1px solid rgba(255,255,255,0.1);
        display: flex;
        flex-direction: column;
        align-items: center;
        height: auto;
    }
    
    .logo { 
        margin-bottom: 0.5rem; 
        width: auto;
    }
    
    .nav-container {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        padding: 0;
    }
    
    .nav-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.8rem 1.2rem;
        width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .nav-link { 
        font-size: 0.9rem; 
        color: #ffffff !important; 
        font-weight: 500;
        opacity: 1 !important;
    }
    
    /* Login Button */
    .auth-container { 
        margin-top: 0.8rem;
        width: 100%;
        display: flex !important;
        justify-content: center;
    }

    .mobile-menu-btn { display: none !important; }
    
    /* Content Layout - Stack Vertically on Mobile (No Overlap) */
    .hero { 
        padding-top: 13rem !important; /* Increased to separate login button from content */
        padding-bottom: 7rem; 
        min-height: auto; 
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        background: radial-gradient(circle at center, #1a1a2e 0%, #0a0a0f 100%);
    }

    /* Reduce huge gap between Expertise and Education sections on mobile */
    .training {
        padding-top: 2rem !important; /* Drastically reduced from default */
        padding-bottom: 2rem !important;
    }
    
    .hero-content { 
        width: 100%;
        padding: 0 1rem;
        background: transparent; 
        text-align: center;
        order: 1; 
        margin-bottom: 0px; /* Removed gap between text/stats and robot */
        z-index: 5;
    }
    
    .hero-title { 
        font-size: 2rem; 
        margin-top: 0; 
        color: #ffffff !important;
        line-height: 1.3;
    }
    
    .hero-description { 
        font-size: 1rem; 
        color: #cccccc !important;
        margin-bottom: 1.5rem;
    }

    /* Robot - Sit BELOW text */
    .hero-spline {
        position: relative !important; 
        width: 100%;
        height: 300px; /* Reduced height for tighter layout */
        top: auto;
        left: auto;
        order: 2; 
        z-index: 1;
        opacity: 1;
        margin-bottom: 0;
        pointer-events: auto;
    }
    
    /* Stats - Horizontal on Mobile */
    .hero-stats {
        flex-direction: row; /* Side by side */
        justify-content: center;
        gap: 2rem;
        width: 100%;
        margin-top: 1rem;
    }
    
    .hero-buttons { flex-direction: column; width: 100%; }
    
    .expert-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .features-grid { grid-template-columns: 1fr; }
    .training-grid { grid-template-columns: 1fr; gap: 1.5rem !important; }

    /* Card sizing fixes */
    .feature-card, .training-card, .contact-card { 
        width: 100%; 
        margin: 0 auto;
    }
    
    .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
    .footer-top { flex-direction: column; gap: 2rem; text-align: center; }
    .footer-links { flex-wrap: wrap; gap: 2rem; justify-content: center; }
    .form-row { display: flex; flex-direction: column; gap: 1rem; }
}

/* ===== Google Login & User Profile ===== */
.auth-container { display: flex; align-items: center; gap: 1rem; margin-left: auto; }
.user-profile { display: flex; align-items: center; gap: 0.5rem; background: var(--bg-card); padding: 0.25rem 0.75rem 0.25rem 0.25rem; border: 1px solid var(--border); border-radius: 50px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; }
.user-name { font-size: 0.875rem; font-weight: 500; color: var(--text-primary); }
.sign-out-btn { font-size: 0.75rem; color: var(--text-tertiary); background: transparent; padding: 0.25rem 0.5rem; border-left: 1px solid var(--border); margin-left: 0.5rem; }
.sign-out-btn:hover { color: var(--text-primary); }
@media (max-width: 768px) { .auth-container { display: none; } }

/* ===== View Transition & Toast ===== */
.hidden { display: none !important; }
.view-section { padding-top: 100px; min-height: 80vh; animation: fadeIn 0.5s ease; }

/* ===== Scroll Animations ===== */
.fade-element { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-element.animate-in { opacity: 1; transform: translateY(0); }