/**
 * MCS Connect Marketing Site - Main Styles
 * Design system inspired by Databox.com
 */

/* ============================================
   CSS Variables (Design System)
   ============================================ */
:root {
    /* Palette: #355872 (primary), #7AAACE (secondary), #9CD5FF (accent), #F7F8F0 (background) */
    --color-primary: #355872;
    --color-primary-dark: #2a4559;
    --color-primary-light: #7AAACE;
    --color-secondary: #7AAACE;
    --color-accent: #9CD5FF;
    --color-bg: #F7F8F0;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-background: #F7F8F0;
    --color-text: #355872;
    --color-text-light: #355872;
    --color-text-muted: #6b7c8d;
    --color-border: rgba(53, 88, 114, 0.2);
    --color-light-gray: #9CD5FF;
    --color-gray-50: #F7F8F0;
    --color-gray-100: #e8eef5;
    --color-gray-200: rgba(53, 88, 114, 0.15);
    --color-gray-300: #7AAACE;
    --color-gray-400: #6b7c8d;
    --color-gray-500: #355872;
    --color-gray-600: #2a4559;
    --color-gray-700: #355872;
    --color-gray-800: #2a4559;
    --color-gray-900: #355872;

    /* Aliases for inline styles (e.g. login/register) */
    --primary-color: var(--color-primary);
    --primary-hover: var(--color-primary-dark);
    --text-color: var(--color-text);
    --text-secondary: var(--color-text-light);
    --text-muted: var(--color-text-muted);
    --success-color: var(--color-success);
    --border-color: var(--color-border);
    --danger-color: var(--color-danger);
    --warning-color: var(--color-warning);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --line-height-tight: 1.2;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --letter-spacing-tight: -0.02em;
    --letter-spacing-wide: 0.025em;

    /* Spacing */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */

    /* Border Radius - slightly tighter for crisp look */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --radius-2xl: 12px;
    --radius-full: 9999px;

    /* Shadows - subtle and professional */
    --shadow-sm: 0 1px 2px rgba(53, 88, 114, 0.06);
    --shadow-md: 0 4px 12px rgba(53, 88, 114, 0.08);
    --shadow-lg: 0 8px 24px rgba(53, 88, 114, 0.1);
    --shadow-xl: 0 16px 48px rgba(53, 88, 114, 0.12);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* ============================================
   Base Styles
   ============================================ */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Section heading pattern: optional overline + title for crisp hierarchy */
.section-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-2);
}

/* Section intro: centered heading + supporting text (also when using text-center mb-8) */
.section-intro,
.text-center.mb-8 {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.section-intro h2,
.text-center.mb-8 h2 {
    margin-bottom: var(--spacing-4);
}

.section-intro .text-muted,
.section-intro p,
.text-center.mb-8 .text-muted,
.text-center.mb-8 p {
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--line-height-relaxed);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-top: 0;
    margin-bottom: var(--spacing-4);
    letter-spacing: var(--letter-spacing-tight);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    margin-bottom: var(--spacing-5);
}

h2 {
    font-size: clamp(1.625rem, 4vw, 2.25rem);
    margin-bottom: var(--spacing-4);
}

h3 {
    font-size: clamp(1.375rem, 3vw, 1.75rem);
    margin-bottom: var(--spacing-3);
}

h4 {
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    margin-bottom: var(--spacing-3);
}

p {
    margin-top: 0;
    margin-bottom: var(--spacing-4);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-5);
    padding-right: var(--spacing-5);
}

@media (min-width: 768px) {
    .container {
        padding-left: var(--spacing-8);
        padding-right: var(--spacing-8);
    }
}

.section {
    padding-top: var(--spacing-20);
    padding-bottom: var(--spacing-20);
}

@media (max-width: 767px) {
    .section {
        padding-top: var(--spacing-12);
        padding-bottom: var(--spacing-12);
    }
}

.section-sm {
    padding-top: var(--spacing-12);
    padding-bottom: var(--spacing-12);
}

@media (max-width: 767px) {
    .section-sm {
        padding-top: var(--spacing-8);
        padding-bottom: var(--spacing-8);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px;
    text-decoration: none;
    letter-spacing: 0.01em;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(53, 88, 114, 0.2);
}

.btn-primary {
    color: #ffffff;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #ffffff;
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    color: var(--color-text);
    background-color: #ffffff;
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-secondary);
    color: var(--color-text);
}

.btn-outline {
    color: var(--color-primary);
    background-color: transparent;
    border: 1px solid var(--color-primary);
}

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

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
    min-height: 52px;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-block {
    display: block;
    width: 100%;
}

@media (min-width: 768px) {
    .btn-block {
        display: inline-block;
        width: auto;
    }
}

/* ============================================
   Cards
   ============================================ */
.card {
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(53, 88, 114, 0.15);
}

.card-header {
    margin-bottom: var(--spacing-4);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    letter-spacing: var(--letter-spacing-tight);
}

.card-body {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--color-text);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px; /* Touch-friendly */
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(53, 88, 114, 0.15);
}

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

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-3) 0;
    box-shadow: var(--shadow-sm);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    position: relative;
}

@media (min-width: 768px) {
    .navbar-container {
        flex-wrap: nowrap;
    }
    
    .navbar-nav {
        display: flex !important;
        flex-direction: row !important;
    }
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: var(--letter-spacing-tight);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand-icon,
.navbar-brand .mcs-connect-logo-icon {
    display: inline-flex;
    flex-shrink: 0;
    color: var(--color-primary);
}

.navbar-brand-icon svg,
.navbar-brand .mcs-connect-logo-icon svg {
    width: 1.75em;
    height: 1.75em;
    vertical-align: middle;
}

.navbar-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-4);
    flex-wrap: nowrap;
}

.navbar-nav > li {
    display: inline-flex;
    align-items: center;
    margin: 0;
    padding: 0;
    list-style: none;
    flex-shrink: 0;
}

.nav-link {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: var(--spacing-2) var(--spacing-1);
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-2);
    cursor: pointer;
    min-height: 44px;
    min-width: 44px;
    color: var(--color-text);
    font-size: var(--font-size-xl);
}

.mobile-menu-toggle:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .navbar-nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        width: 100%;
        max-height: calc(100vh - 70px);
        background-color: var(--color-background);
        border-top: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-4);
        gap: var(--spacing-2);
        overflow-y: auto;
        z-index: 999;
        box-shadow: var(--shadow-lg);
        margin: 0;
    }
    
    .navbar-nav.active {
        display: flex;
    }
    
    .navbar-nav > li {
        display: flex;
        width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .navbar-nav .nav-link {
        width: 100%;
        padding: var(--spacing-3);
        border-bottom: 1px solid var(--color-border);
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .navbar-nav .btn {
        width: 100%;
        margin-top: var(--spacing-2);
        display: flex;
        justify-content: center;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: var(--spacing-24);
    padding-bottom: var(--spacing-24);
    background: linear-gradient(180deg, var(--color-bg) 0%, rgba(156, 213, 255, 0.25) 100%);
    position: relative;
}

.hero::before {
    display: none;
}

@media (max-width: 767px) {
    .hero {
        padding-top: var(--spacing-16);
        padding-bottom: var(--spacing-16);
    }
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-5);
    color: var(--color-text);
    letter-spacing: var(--letter-spacing-tight);
}

.hero-subtitle {
    font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-8);
    line-height: var(--line-height-relaxed);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Feature Grid
   ============================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
}

@media (max-width: 767px) {
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-5);
    }
}

.feature-card {
    text-align: center;
    padding: var(--spacing-6);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-4);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.feature-icon i {
    color: var(--color-primary);
    opacity: 1;
}

.feature-card:hover .feature-icon {
    color: var(--color-primary-dark);
    transition: color var(--transition-base);
}

.feature-card:hover .feature-icon i {
    color: var(--color-primary-dark);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-3);
    letter-spacing: var(--letter-spacing-tight);
}

.feature-description {
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-sm);
}

/* ============================================
   Social Proof Bar
   ============================================ */
.social-proof {
    background: #ffffff;
    padding: var(--spacing-8) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.social-proof-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-10);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-1);
    letter-spacing: var(--letter-spacing-tight);
}

.stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
}

/* ============================================
   Section Alternating Backgrounds
   ============================================ */
.section-alt {
    background: rgba(156, 213, 255, 0.12);
    position: relative;
    border-top: 1px solid var(--color-border);
}

/* ============================================
   CTA Sections
   ============================================ */
.cta-section {
    background: linear-gradient(180deg, var(--color-accent) 0%, rgba(122, 170, 206, 0.4) 100%);
    padding: var(--spacing-16) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

/* Bold CTA block: solid primary background, white text */
.section-cta-bold {
    background: var(--color-primary);
    color: #ffffff;
    padding: var(--spacing-16) 0;
}

.section-cta-bold .hero-title,
.section-cta-bold h1,
.section-cta-bold h2,
.section-cta-bold h3,
.section-cta-bold p,
.section-cta-bold .text-muted {
    color: #ffffff;
}

.section-cta-bold .text-muted {
    opacity: 0.95;
}

.section-cta-bold .btn-primary {
    background: #ffffff;
    color: var(--color-primary);
    border-color: #ffffff;
}

.section-cta-bold .btn-primary:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
    border-color: var(--color-gray-100);
}

.section-cta-bold .btn-outline {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.8);
    background: transparent;
}

.section-cta-bold .btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #ffffff;
    color: #ffffff;
}

/* ============================================
   Utilities
   ============================================ */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--color-text-muted);
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

/* ============================================
   Animations
   ============================================ */
@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        animation: fadeIn 0.6s ease-in-out;
    }
    
    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   Mobile-Specific Optimizations
   ============================================ */
@media (max-width: 767px) {
    /* Reduce section padding on mobile */
    .section {
        padding-top: var(--spacing-10);
        padding-bottom: var(--spacing-10);
    }
    
    /* Full-width buttons on mobile */
    .btn {
        width: 100%;
    }
    
    /* Stack hero CTAs on mobile */
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    /* Ensure forms are full-width on mobile */
    .form-control {
        width: 100%;
    }
    
    /* Better spacing for mobile cards */
    .card {
        padding: var(--spacing-4);
    }
    
    /* Stack pricing cards on mobile */
    .pricing-table {
        grid-template-columns: 1fr;
    }
    
    /* Better mobile typography */
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    /* Ensure touch targets are adequate */
    .nav-link,
    .btn,
    .faq-question {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Mobile-friendly tables - horizontal scroll */
    .feature-comparison-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .feature-comparison {
        min-width: 600px;
    }
    
    /* Better mobile spacing */
    .mb-4 {
        margin-bottom: var(--spacing-4) !important;
    }
    
    .mb-6 {
        margin-bottom: var(--spacing-6) !important;
    }
    
    .mb-8 {
        margin-bottom: var(--spacing-8) !important;
    }
}

/* ============================================
   Tablet Optimizations
   ============================================ */
@media (min-width: 768px) and (max-width: 1024px) {
    .pricing-table {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}