/* --------------------------------------------------
 * Kestro Infotech - Style Sheet
 * Theme: Premium Neutral Corporate
 * -------------------------------------------------- */

:root {
    /* Color Palette */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --primary-color: #1e3a8a; /* Deep Trust Navy */
    --primary-hover: #1e40af;
    --primary-light: #eff6ff;
    
    --accent-color: #0284c7; /* Professional Tech Blue */
    --accent-gradient: linear-gradient(135deg, #1e3a8a 0%, #0284c7 100%);
    
    --border-color: #e2e8f0;
    --border-focus: #3b82f6;
    
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.03);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.08);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: 'Plus Jakarta Sans', var(--font-sans);
    
    /* Layout & Utilities */
    --container-width: 1200px;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Canvas */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* Typography Grid */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Containers */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Site Header */
.site-header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background-color: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

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

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--accent-color);
    font-weight: 500;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--bg-secondary);
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    animation: pulse 1.8s infinite;
}

.status-text {
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Animations */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Main Content Wrapper */
.main-content {
    flex: 1;
}

/* Hero Section */
.hero-section {
    padding: 6rem 1.5rem 5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeIn 1s ease-out;
}

.badge-container {
    margin-bottom: 1.5rem;
}

.badge {
    background-color: var(--primary-light);
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 1rem;
    border-radius: 50px;
    border: 1px solid rgba(30, 58, 138, 0.1);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 680px;
    margin-bottom: 3rem;
    line-height: 1.6;
}

/* Subscription Form */
.subscription-box {
    width: 100%;
    max-width: 500px;
    position: relative;
}

.subscribe-form {
    display: flex;
    gap: 0.5rem;
    background-color: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.subscribe-form:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.08);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    padding-left: 0.75rem;
}

.input-icon {
    color: var(--text-muted);
    flex-shrink: 0;
}

.subscribe-form input {
    width: 100%;
    border: none;
    outline: none;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: transparent;
}

.subscribe-form input::placeholder {
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-secondary);
    border-radius: 8px;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-secondary {
    background-color: var(--text-primary);
    color: var(--bg-secondary);
    border-radius: 8px;
}

.btn-secondary:hover {
    background-color: #1e293b;
}

.btn-secondary:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-full {
    width: 100%;
}

.btn-arrow {
    transition: transform 0.2s ease;
}

/* Form Feedback */
.form-feedback {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: left;
    min-height: 20px;
    opacity: 0;
    transform: translateY(-5px);
    transition: var(--transition-smooth);
}

.form-feedback.success {
    color: #059669;
    opacity: 1;
    transform: translateY(0);
}

.form-feedback.error {
    color: #dc2626;
    opacity: 1;
    transform: translateY(0);
}

/* Services Preview Section */
.services-section {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.25rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 2.25rem 2rem;
    border-radius: var(--border-radius-md);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30, 58, 138, 0.15);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon-box {
    color: var(--bg-secondary);
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.service-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.service-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Contact Section */
.contact-section {
    padding: 6rem 1.5rem;
}

.contact-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    overflow: hidden;
}

.contact-info {
    padding: 4rem 3.5rem;
    background-color: var(--bg-tertiary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1px solid var(--border-color);
}

.contact-title {
    font-size: 2rem;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.contact-text {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1rem;
    line-height: 1.6;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-detail-icon {
    width: 36px;
    height: 36px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.contact-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.contact-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.contact-form-wrapper {
    padding: 4rem 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    background-color: var(--bg-primary);
    transition: var(--transition-smooth);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--border-focus);
    background-color: var(--bg-secondary);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.04);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Footer Section */
.site-footer {
    padding: 3rem 0;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .contact-card {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 3rem 2.5rem;
    }
    
    .contact-form-wrapper {
        padding: 3rem 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 1.5rem 3rem;
    }
    
    .subscribe-form {
        flex-direction: column;
        padding: 0.75rem;
        gap: 0.75rem;
        border-radius: var(--border-radius-md);
    }
    
    .input-wrapper {
        padding-left: 0.25rem;
    }
    
    .btn {
        width: 100%;
        padding: 0.85rem 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
}

/* Animations Definitions */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}