/* 
 * Brain of Code - Premium Design System (CSS3)
 * Modern Silicon Valley Tech Aesthetics with Light/Dark support
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    /* Color Palette tokens */
    --primary-color: #2563EB;
    --primary-hover: #1D4ED8;
    --secondary-color: #0F172A;
    --accent-color: #06B6D4;
    --success-color: #10B981;
    
    /* Typography */
    --font-title: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Light Theme Tokens */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-card: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --card-shadow: 0 12px 30px -10px rgba(15, 23, 42, 0.08);
    --hero-overlay: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.04) 0%, rgba(6, 182, 212, 0.02) 90%);
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(226, 232, 240, 0.8);
    --btn-secondary-bg: #F1F5F9;
    --btn-secondary-text: #0F172A;
}

[data-theme="dark"] {
    /* Dark Theme Tokens */
    --bg-primary: #0B0F19;
    --bg-secondary: #111827;
    --bg-card: #131C30;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border-color: #1E293B;
    --card-shadow: 0 15px 40px -10px rgba(0, 0, 0, 0.4);
    --hero-overlay: radial-gradient(circle at 10% 20%, rgba(37, 99, 235, 0.12) 0%, rgba(6, 182, 212, 0.06) 90%);
    --glass-bg: rgba(11, 15, 25, 0.75);
    --glass-border: rgba(30, 41, 59, 0.6);
    --btn-secondary-bg: #1E293B;
    --btn-secondary-text: #F8FAFC;
}

/* Global Reset & Base Styling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.15s ease-out;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    font-weight: 700;
    color: var(--text-primary);
}

/* Navbar Premium Styling */
.navbar-custom {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 0;
    z-index: 1000;
}

.navbar-brand-text {
    font-family: var(--font-title);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary) !important;
    padding: 8px 16px !important;
    border-radius: 6px;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(37, 99, 235, 0.05);
}

/* Theme Switcher Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1rem;
}

.theme-toggle-btn:hover {
    background-color: var(--btn-secondary-bg);
}

/* Custom Buttons Styling */
.btn-primary-custom {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1D4ED8 100%);
    color: #FFFFFF !important;
    font-family: var(--font-title);
    font-weight: 600;
    border: none;
    padding: 12px 28px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary-custom {
    background-color: var(--btn-secondary-bg);
    color: var(--btn-secondary-text) !important;
    font-family: var(--font-title);
    font-weight: 600;
    border: 1px solid var(--border-color);
    padding: 12px 28px;
    border-radius: 8px;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.btn-secondary-custom:hover {
    transform: translateY(-2px);
    background-color: var(--border-color);
}

/* Hero Section */
.hero-section {
    background: var(--hero-overlay);
    padding: 160px 0 100px 0;
    position: relative;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.25rem;
    margin-bottom: 30px;
    font-weight: 400;
}

.trust-badges {
    margin-top: 40px;
}

.badge-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-right: 20px;
    color: var(--text-secondary);
    font-weight: 500;
}

.badge-item i {
    color: var(--success-color);
    font-size: 1.25rem;
}

/* SVG Illustration animations */
.tech-illustration {
    width: 100%;
    max-width: 480px;
    height: auto;
    filter: drop-shadow(0 15px 30px rgba(37, 99, 235, 0.15));
}

.pulse-circle {
    animation: pulse 4s infinite alternate;
    transform-origin: center;
}

.floating-node {
    animation: float 6s infinite ease-in-out;
}

.floating-node-2 {
    animation: float 8s infinite ease-in-out reverse;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    100% { transform: scale(1.05); opacity: 1; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

/* Section Common Styling */
.section-padding {
    padding: 100px 0;
}

.bg-light-section {
    background-color: var(--bg-secondary);
}

.section-tag {
    font-family: var(--font-title);
    font-weight: 600;
    text-transform: uppercase;
    color: var(--primary-color);
    letter-spacing: 1.5px;
    font-size: 0.85rem;
    display: inline-block;
    padding: 6px 14px;
    background-color: rgba(37, 99, 235, 0.08);
    border-radius: 50px;
    margin-bottom: 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.75px;
    margin-bottom: 20px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 50px auto;
}

/* Premium Card Components */
.premium-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.premium-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px -15px rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.3);
}

.card-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background-color: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.premium-card:hover .card-icon-wrapper {
    background-color: var(--primary-color);
    color: #FFFFFF;
    transform: scale(1.05);
    transition: transform 0.2s ease;
}

/* Statistics Counters */
.stat-box {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-family: var(--font-title);
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 10px;
}

.stat-label {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Services Grid & Filter tabs */
.filter-btn {
    border: 1px solid var(--border-color);
    background: none;
    color: var(--text-secondary);
    padding: 8px 18px;
    border-radius: 30px;
    font-weight: 500;
    margin: 5px;
    cursor: pointer;
    font-size: 0.9rem;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--primary-color);
    color: #FFFFFF;
    border-color: var(--primary-color);
}

/* Testimonial Slider & Card */
.testimonial-card {
    border-left: 4px solid var(--primary-color);
}

.client-rating {
    color: #FBBF24;
    margin-bottom: 15px;
}

.client-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.client-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--border-color);
}

/* Footer Section */
.footer-section {
    background-color: var(--secondary-color);
    color: #94A3B8;
    padding: 80px 0 30px 0;
    border-top: 1px solid #1E293B;
}

.footer-section h5 {
    color: #FFFFFF;
    margin-bottom: 25px;
    font-weight: 600;
}

.footer-section a {
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-logo {
    font-family: var(--font-title);
    font-weight: 800;
    color: #FFFFFF;
    font-size: 1.5rem;
    margin-bottom: 15px;
    display: inline-block;
}

.social-icon {
    width: 36px;
    height: 36px;
    background-color: #1E293B;
    color: #FFFFFF;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.social-icon:hover {
    background-color: var(--primary-color);
    color: #FFFFFF !important;
    transform: translateY(-2px);
}

.whatsapp-float-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    color: #FFFFFF;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: transform 0.2s ease;
}

.whatsapp-float-btn:hover {
    transform: scale(1.08);
    color: #FFFFFF;
}

/* Blog layouts */
.blog-card-img {
    height: 200px;
    object-fit: cover;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
}

.blog-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

/* Form Styles */
.form-control-custom {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 18px;
    border-radius: 8px;
}

.form-control-custom:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    color: var(--text-primary);
    outline: none;
}

/* Process Timeline (Services & About) */
.process-step {
    position: relative;
    padding-left: 40px;
    margin-bottom: 30px;
}

.process-step::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 24px;
    bottom: -36px;
    width: 2px;
    background-color: var(--border-color);
}

.process-step:last-child::before {
    display: none;
}

.process-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

/* Accordion Customization */
.accordion-custom .accordion-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.accordion-custom .accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-family: var(--font-title);
    font-weight: 600;
    padding: 20px;
    border: none;
    box-shadow: none;
}

.accordion-custom .accordion-button::after {
    filter: invert(0.5);
}

.accordion-custom .accordion-button:not(.collapsed) {
    background-color: rgba(37, 99, 235, 0.03);
    color: var(--primary-color);
}

.accordion-custom .accordion-body {
    background-color: var(--bg-card);
    color: var(--text-secondary);
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

/* Shimmer animations on submit load */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}
.btn-loading::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    top: 50%;
    left: 50%;
    margin-top: -9px;
    margin-left: -9px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: #FFFFFF;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    100% { transform: rotate(360deg); }
}