/* CSS Variables & Global setup */
:root {
    /* Colors - Dark Premium Futuristic */
    --bg-base: #06060a;
    --bg-surface: #0e0e15;
    --bg-glass: rgba(20, 20, 30, 0.45);
    --bg-glass-hover: rgba(30, 30, 45, 0.65);
    --border-glass: rgba(255, 255, 255, 0.08);
    
    --primary: #4f46e5; /* Indigo */
    --primary-light: #818cf8;
    --primary-glow: rgba(79, 70, 229, 0.4);
    
    --secondary: #0ea5e9; /* Light blue */
    --accent: #a855f7; /* Purple */
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Sizes */
    --container-width: 1180px;
    --navbar-height: 80px;
    
    /* Layout & Utilities */
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: var(--transition-base); }
ul { list-style: none; }
img, svg { max-width: 100%; display: block; }

/* Typography */
h1, h2, h3, h4, .logo {
    font-family: var(--font-heading);
    line-height: 1.2;
    font-weight: 700;
}

.text-gradient {
    background: linear-gradient(135deg, var(--secondary), var(--primary), var(--accent), var(--secondary));
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientTextFlow 6s ease infinite;
}
@keyframes gradientTextFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.text-white { color: white !important; }
.text-left { text-align: left !important; }

/* Layout & Sections */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.section {
    padding: 7rem 0;
    position: relative;
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Background Effects */
.bg-effects {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.15;
    animation: floatGlow 15s ease-in-out infinite alternate;
}

.g1 { width: 50vw; height: 50vw; background: var(--primary); top: -10%; left: -10%; }
.g2 { width: 40vw; height: 40vw; background: var(--accent); bottom: 10%; right: -10%; animation-delay: -5s; }
.g3 { width: 30vw; height: 30vw; background: var(--secondary); top: 50%; left: 30%; animation-delay: -10s; opacity: 0.1; }

@keyframes floatGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 5%) scale(1.1); }
}

#particles-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.4;
}

/* UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.6rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    border: none;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.2), rgba(255,255,255,0));
    transform: translateX(-100%);
    transition: 0.5s;
    z-index: -1;
}

.btn:hover::before { transform: translateX(100%); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.btn-lg { padding: 1.1rem 2.2rem; font-size: 1.1rem; }
.btn-sm { padding: 0.6rem 1.2rem; font-size: 0.9rem; }
.btn-block { width: 100%; }
.mt-auto { margin-top: auto; }

.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.glass-card:hover {
    border-color: rgba(79, 70, 229, 0.4);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5), inset 0 0 20px rgba(79, 70, 229, 0.05);
}

/* Header */
.header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    height: var(--navbar-height);
    z-index: 100;
    display: flex;
    align-items: center;
    border-bottom: 1px solid transparent;
    transition: var(--transition-slow);
}

.header.scrolled {
    background: rgba(6, 6, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.h-flex { display: flex; justify-content: space-between; align-items: center; }

.logo { font-size: 1.5rem; letter-spacing: -0.02em; }

.main-nav { display: flex; align-items: center; gap: 2rem; }
.nav-list { display: flex; gap: 2rem; }
.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
    background: var(--primary); transition: var(--transition-base); border-radius: 2px;
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.mobile-menu-btn {
    display: none; background: none; border: none; cursor: pointer;
    width: 30px; height: 20px; position: relative; z-index: 101;
}
.mobile-menu-btn span {
    position: absolute; width: 100%; height: 2px; background: var(--text-primary);
    left: 0; transition: var(--transition-base); border-radius: 2px;
}
.mobile-menu-btn span:nth-child(1) { top: 0; }
.mobile-menu-btn span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.mobile-menu-btn span:nth-child(3) { bottom: 0; }
.mobile-menu-btn.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; padding-top: calc(var(--navbar-height) + 2rem); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 4rem; align-items: center; }

.badge {
    display: inline-block; padding: 0.4rem 1rem;
    background: rgba(79, 70, 229, 0.1); border: 1px solid rgba(79, 70, 229, 0.2);
    color: var(--primary-light); border-radius: var(--radius-full);
    font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.hero-title { font-size: clamp(3rem, 5vw, 4.5rem); margin-bottom: 1.5rem; }
.hero-subtitle { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 2.5rem; line-height: 1.8; }
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-visual { perspective: 1000px; display: flex; justify-content: center; }
.card-3d {
    width: 100%; max-width: 450px; padding: 2rem;
    transform: rotateY(-10deg) rotateX(10deg);
    animation: float3D 6s ease-in-out infinite alternate;
}
@keyframes float3D {
    0% { transform: translateY(0) rotateY(-10deg) rotateX(10deg); }
    100% { transform: translateY(-20px) rotateY(-5deg) rotateX(15deg); }
}

.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; border-bottom: 1px solid var(--border-glass); padding-bottom: 1rem; }
.dots { display: flex; gap: 6px; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-glass); }
.dots span:nth-child(1) { background: #ef4444; }
.dots span:nth-child(2) { background: #eab308; }
.dots span:nth-child(3) { background: #22c55e; }

.status-badge {
    font-size: 0.75rem; color: var(--primary-light);
    display: flex; align-items: center; gap: 0.5rem;
}
.status-badge::before {
    content: ''; width: 8px; height: 8px; border-radius: 50%;
    background: var(--primary); box-shadow: 0 0 10px var(--primary); animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.metric-label { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.chart-bars { display: flex; align-items: flex-end; gap: 8px; height: 80px; margin-bottom: 1rem; }
.bar {
    flex: 1; background: rgba(79, 70, 229, 0.2); border-radius: 4px 4px 0 0; position: relative; overflow: hidden;
    transform-origin: bottom; animation: growBar 1.5s cubic-bezier(0.1, 0.8, 0.2, 1) forwards; transform: scaleY(0);
}
@keyframes growBar { 100% { transform: scaleY(1); } }
.bar::after {
    content: ''; position: absolute; inset:0; background: linear-gradient(to top, transparent, var(--primary)); opacity: 0.8;
}
.bar:nth-child(1) { height: 30%; animation-delay: 0.5s; }
.bar:nth-child(2) { height: 45%; animation-delay: 0.7s; }
.bar:nth-child(3) { height: 60%; animation-delay: 0.9s; }
.bar:nth-child(4) { height: 80%; animation-delay: 1.1s; }
.bar:nth-child(5) { height: 100%; background: rgba(168, 85, 247, 0.3); animation-delay: 1.3s; }
.bar:nth-child(5)::after { background: linear-gradient(to top, transparent, var(--accent)); }

.metric-value { font-size: 3rem; font-weight: 800; font-family: var(--font-heading); margin-bottom: 1.5rem; }
.ai-insight {
    background: rgba(79, 70, 229, 0.05); border: 1px solid rgba(79, 70, 229, 0.2);
    padding: 1rem; border-radius: var(--radius-md); display: flex; gap: 1rem; align-items: flex-start;
    font-size: 0.85rem; color: var(--text-secondary);
}

/* Services */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; }
.service-card { padding: 2.5rem 2rem; transition: var(--transition-base); }
.service-card:hover { transform: translateY(-10px); }
.s-icon {
    width: 64px; height: 64px; border-radius: 16px;
    background: linear-gradient(135deg, rgba(79,70,229,0.1), rgba(168,85,247,0.1));
    border: 1px solid rgba(255,255,255,0.05);
    display: flex; align-items: center; justify-content: center;
    color: var(--primary-light); margin-bottom: 1.5rem; transition: var(--transition-base);
    animation: floatIcon 3s ease-in-out infinite alternate;
}
@keyframes floatIcon { 0% { transform: translateY(0); } 100% { transform: translateY(-8px); } }
.service-card:hover .s-icon { animation-play-state: paused; transform: scale(1.1) rotate(5deg) translateY(-8px); color: white; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.service-card h3 { font-size: 1.25rem; margin-bottom: 1rem; }
.service-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Pricing */
.pricing-sec { background: linear-gradient(to bottom, transparent, rgba(79, 70, 229, 0.03), transparent); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; align-items: stretch; }
.plan-card { padding: 3rem 2.5rem; display: flex; flex-direction: column; position: relative; }
.plan-card:hover { transform: translateY(-10px); }
.plan-card.featured {
    border-color: rgba(79, 70, 229, 0.5); box-shadow: 0 0 40px rgba(79, 70, 229, 0.15);
    background: linear-gradient(180deg, rgba(20,20,30,0.8), rgba(20,20,30,0.4));
    transform: scale(1.05); z-index: 2; position: relative;
}
.plan-card.featured::before {
    content: ''; position: absolute; inset: -2px; z-index: -1;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary), var(--primary));
    background-size: 300% 300%; border-radius: calc(var(--radius-lg) + 2px);
    animation: gradientTextFlow 4s linear infinite; opacity: 0.5; transition: var(--transition-base);
}
.plan-card.featured:hover::before { opacity: 1; filter: blur(10px); }
.plan-card.featured:hover { transform: scale(1.05) translateY(-5px); }
.featured-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white; padding: 0.4rem 1.2rem; border-radius: var(--radius-full);
    font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
    box-shadow: 0 4px 15px var(--primary-glow);
}
.plan-card h3 { font-size: 1.5rem; margin-bottom: 1rem; }
.price { font-size: 3.5rem; font-weight: 800; font-family: var(--font-heading); margin-bottom: 1rem; line-height: 1; }
.price span { font-size: 1.1rem; color: var(--text-muted); font-weight: 400; }
.p-desc { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 2rem; min-height: 48px; border-bottom: 1px solid var(--border-glass); padding-bottom: 2rem; }
.features { margin-bottom: 2.5rem; }
.features li { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem; color: var(--text-secondary); font-size: 0.95rem; }
.features li svg { width: 20px; height: 20px; flex-shrink: 0; }
.features li strong { color: var(--text-primary); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.about-content p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 1.5rem; }
.about-content strong { color: var(--text-primary); }
.about-stats { display: flex; gap: 4rem; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border-glass); }
.stat { display: flex; flex-direction: column; }
.s-num { font-size: 3.5rem; font-weight: 800; font-family: var(--font-heading); line-height: 1; margin-bottom: 0.5rem; }
.s-lbl { color: var(--text-secondary); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }

.ai-scene { width: 100%; aspect-ratio: 1; position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.orbital-rings { position: relative; width: 200px; height: 200px; display: flex; align-items: center; justify-content: center; }
.ring {
    position: absolute; border-radius: 50%; border: 1px solid rgba(79, 70, 229, 0.3);
    border-top-color: var(--primary-light); animation: spin linear infinite;
}
.r1 { width: 100%; height: 100%; animation-duration: 10s; }
.r2 { width: 70%; height: 70%; border-color: rgba(168, 85, 247, 0.3); border-bottom-color: var(--accent); animation-duration: 7s; animation-direction: reverse; }
.core-node { width: 40px; height: 40px; background: var(--primary); border-radius: 50%; box-shadow: 0 0 30px var(--primary); animation: pulse 2s infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }
.floating-data {
    position: absolute; padding: 0.5rem 1rem; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass); border-radius: var(--radius-md); font-size: 0.8rem;
    color: var(--primary-light); backdrop-filter: blur(4px);
}
.d1 { top: 20%; left: 10%; animation: floatData 4s ease-in-out infinite alternate; }
.d2 { bottom: 20%; right: 10%; animation: floatData 5s ease-in-out infinite alternate-reverse; }
@keyframes floatData { 0% { transform: translateY(0px); } 100% { transform: translateY(-15px); } }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.c-details { display: flex; flex-direction: column; gap: 1.5rem; margin: 3rem 0; }
.c-item { display: flex; align-items: center; gap: 1rem; font-size: 1.1rem; }
.c-item svg { color: var(--primary-light); width: 24px; height: 24px; }
.calendly-box { padding-top: 2rem; border-top: 1px solid var(--border-glass); }
.calendly-box p { color: var(--text-secondary); margin-bottom: 1.5rem; }

.contact-form { padding: 3rem; }
.form-group { margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.form-group input, .form-group textarea {
    width: 100%; padding: 1rem; background: rgba(0,0,0,0.3); border: 1px solid var(--border-glass);
    border-radius: var(--radius-md); color: white; font-family: var(--font-body); transition: var(--transition-base); resize: vertical;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); background: rgba(0,0,0,0.5); box-shadow: 0 0 15px rgba(79, 70, 229, 0.1); }

.form-checkbox { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 1.5rem; }
.form-checkbox input[type="checkbox"] { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--primary); cursor: pointer; flex-shrink: 0; background: rgba(0,0,0,0.3); border: 1px solid var(--border-glass); border-radius: 4px; }
.form-checkbox label { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; cursor: pointer; text-transform: none; font-weight: 400; letter-spacing: normal; }
.policy-link { color: var(--primary-light); text-decoration: underline; transition: var(--transition-base); }
.policy-link:hover { color: white; }

/* Testimonials */
.testi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-top: 3rem; }
.testi-card { padding: 2.5rem; display: flex; flex-direction: column; gap: 1.5rem; }
.stars { color: #f59e0b; font-size: 1.25rem; letter-spacing: 2px; }
.t-text { color: var(--text-secondary); font-size: 1.05rem; font-style: italic; flex-grow: 1; }
.t-author { display: flex; align-items: center; gap: 1rem; margin-top: auto; border-top: 1px solid var(--border-glass); padding-top: 1.5rem; }
.t-avatar { width: 50px; height: 50px; border-radius: 50%; overflow: hidden; border: 2px solid var(--primary-light); flex-shrink: 0; }
.t-author h4 { font-size: 1rem; color: var(--text-primary); margin-bottom: 0.2rem; }
.t-author span { font-size: 0.85rem; color: var(--text-muted); }

/* FAQs */
.faq-container { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 1rem; }
.faq-item { background: var(--bg-glass); border: 1px solid var(--border-glass); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition-base); }
.faq-question { width: 100%; text-align: left; padding: 1.5rem; background: transparent; border: none; color: var(--text-primary); font-family: var(--font-heading); font-size: 1.1rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: var(--transition-base); }
.faq-question:hover { background: rgba(79, 70, 229, 0.05); }
.faq-question svg { width: 20px; height: 20px; color: var(--primary-light); transition: transform 0.3s ease; flex-shrink: 0; margin-left: 1rem; }
.faq-item.active { border-color: rgba(79, 70, 229, 0.4); box-shadow: 0 5px 20px rgba(0,0,0,0.3); }
.faq-item.active .faq-question svg { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-answer p { padding: 0 1.5rem 1.5rem; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* Footer */
.footer { background: #030305; padding: 5rem 0 2rem; border-top: 1px solid var(--border-glass); }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 4rem; margin-bottom: 4rem; border-bottom: 1px solid var(--border-glass); padding-bottom: 4rem; }
.f-brand p { color: var(--text-secondary); margin-top: 1rem; max-width: 400px; }
.f-links h4, .f-legal h4 { font-size: 1.1rem; margin-bottom: 1.5rem; font-family: var(--font-heading); }
.f-links ul li, .f-legal ul li { margin-bottom: 0.8rem; }
.f-links ul li a, .f-legal ul li a { color: var(--text-secondary); font-size: 0.95rem; }
.f-links ul li a:hover, .f-legal ul li a:hover { color: var(--primary-light); }
.f-bottom { text-align: center; color: var(--text-muted); font-size: 0.9rem; }

/* Scroll Animations */
.reveal { opacity: 0; transform: translateY(30px); transition: all 0.8s cubic-bezier(0.5, 0, 0, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
    .pricing-grid { grid-template-columns: 1fr; max-width: 500px; margin-inline: auto; gap: 3rem; }
    .plan-card.featured { transform: scale(1); }
    .plan-card.featured:hover { transform: translateY(-5px); }
    .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin-inline: auto; }
    .hero-buttons { justify-content: center; }
    .hero-title { font-size: 2.5rem; }
    
    .mobile-menu-btn { display: block; }
    .main-nav {
        position: fixed; top: var(--navbar-height); left: 0; width: 100%; height: 0;
        background: rgba(6, 6, 10, 0.98); backdrop-filter: blur(20px);
        flex-direction: column; justify-content: center; overflow: hidden;
        transition: height 0.4s ease; border-bottom: 1px solid var(--border-glass); gap: 1.5rem;
    }
    .main-nav.active { height: calc(100vh - var(--navbar-height)); }
    .nav-list { flex-direction: column; align-items: center; gap: 1.5rem; }
    .nav-link { font-size: 1.25rem; }
    
    .footer-content { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
    .f-brand p { margin-inline: auto; }
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    transition: var(--transition-base);
}
.whatsapp-btn svg { width: 35px; height: 35px; fill: white; }
.whatsapp-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.6);
}
@media (max-width: 768px) {
    .whatsapp-btn { bottom: 20px; left: 20px; width: 50px; height: 50px; }
    .whatsapp-btn svg { width: 30px; height: 30px; }
}