/* =========================
   CSS VARIABLES (THEME)
========================= */
:root {
    /* Primary Colors - Professional Tech Blue */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    --primary-950: #172554;

    /* Accent Colors - Based on your systems */
    --auto-color: #10b981;
    --auto-light: #d1fae5;
    --estate-color: #8b5cf6;
    --estate-light: #ede9fe;
    --finance-color: #f59e0b;
    --finance-light: #fef3c7;
    --hr-color: #ef4444;
    --hr-light: #fee2e2;

    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gray-950: #030712;

    /* Success/Danger/Warning */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;

    /* Backgrounds */
    --bg-primary: var(--gray-950);
    --bg-secondary: var(--gray-900);
    --bg-card: var(--gray-800);
    --bg-surface: var(--gray-700);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: var(--gray-300);
    --text-muted: var(--gray-400);
    --text-on-color: #ffffff;

    /* Borders */
    --border-light: var(--gray-700);
    --border-medium: var(--gray-600);
    --border-strong: var(--primary-600);

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* Glows */
    --glow-primary: 0 0 30px rgba(59, 130, 246, 0.3);
    --glow-auto: 0 0 30px rgba(16, 185, 129, 0.3);
    --glow-estate: 0 0 30px rgba(139, 92, 246, 0.3);
    --glow-finance: 0 0 30px rgba(245, 158, 11, 0.3);
    --glow-hr: 0 0 30px rgba(239, 68, 68, 0.3);

    /* Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    --gradient-auto: linear-gradient(135deg, var(--auto-color), #34d399);
    --gradient-estate: linear-gradient(135deg, var(--estate-color), #a78bfa);
    --gradient-finance: linear-gradient(135deg, var(--finance-color), #fbbf24);
    --gradient-hr: linear-gradient(135deg, var(--hr-color), #f87171);
    --gradient-dark: linear-gradient(135deg, var(--gray-900), var(--gray-950));
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));

    /* Blurs */
    --blur-sm: blur(8px);
    --blur-md: blur(16px);
    --blur-lg: blur(24px);
}

/* =========================
   RESET & BASE STYLES
========================= */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* =========================
   TYPOGRAPHY
========================= */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

h1 {
    font-size: clamp(3rem, 5vw, 4.5rem);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-300) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: clamp(2.5rem, 4vw, 4rem);
}

h3 {
    font-size: clamp(1.875rem, 3vw, 3rem);
}

h4 {
    font-size: clamp(1.5rem, 2vw, 2rem);
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    font-size: 1.125rem;
    line-height: 1.8;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 48rem;
}

.section-title {
    position: relative;
    display: inline-block;
    margin-bottom: var(--space-2xl);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* =========================
   LAYOUT & CONTAINERS
========================= */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.section-dark {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

/* =========================
   CARDS
========================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glass);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-xl), var(--glow-primary);
}

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

.card-primary {
    border-color: var(--primary-500);
    background: linear-gradient(135deg, var(--bg-card), var(--gray-900));
}

.card-auto { border-color: var(--auto-color); }
.card-estate { border-color: var(--estate-color); }
.card-finance { border-color: var(--finance-color); }
.card-hr { border-color: var(--hr-color); }

.card-auto:hover { box-shadow: var(--shadow-xl), var(--glow-auto); }
.card-estate:hover { box-shadow: var(--shadow-xl), var(--glow-estate); }
.card-finance:hover { box-shadow: var(--shadow-xl), var(--glow-finance); }
.card-hr:hover { box-shadow: var(--shadow-xl), var(--glow-hr); }

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.card-icon-primary { background: var(--gradient-primary); }
.card-icon-auto { background: var(--gradient-auto); }
.card-icon-estate { background: var(--gradient-estate); }
.card-icon-finance { background: var(--gradient-finance); }
.card-icon-hr { background: var(--gradient-hr); }

/* =========================
   BUTTONS
========================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.btn-primary {
    background: var(--primary-600);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--glow-primary);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-500);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid currentColor;
}

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

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

.btn-group {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* =========================
   NAVIGATION
========================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(3, 7, 18, 0.95);
    backdrop-filter: var(--blur-lg);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--space-sm) 0;
    background: rgba(3, 7, 18, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.nav-brand {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-brand span {
    color: var(--primary-500);
}

.nav-menu {
    display: flex;
    gap: var(--space-2xl);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* =========================
   HERO SECTION
========================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-visual {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.macbook-frame {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.macbook-frame::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-primary);
    border-radius: 24px;
    filter: blur(20px);
    opacity: 0.5;
    z-index: -1;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.macbook-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

/* =========================
   GRID SYSTEMS
========================= */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* =========================
   STATS & METRICS
========================= */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--gradient-glass);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--space-sm);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* =========================
   FEATURES
========================= */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.feature-card {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    background: var(--gradient-primary);
}

/* =========================
   TESTIMONIALS
========================= */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.testimonial-card {
    padding: var(--space-xl);
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-size: 4rem;
    color: var(--primary-500);
    opacity: 0.1;
    font-family: Georgia, serif;
}

.testimonial-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
}

.author-info h4 {
    font-size: 1rem;
    margin-bottom: 0;
    color: var(--text-primary);
}

.author-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* =========================
   CONTACT FORM
========================= */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

/* =========================
   FOOTER
========================= */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-description {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-500);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-heading {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.footer-links {
    list-style: none;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    display: block;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-500);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-light);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* =========================
   ANIMATIONS & EFFECTS
========================= */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stagger > * {
    opacity: 0;
    animation: fadeIn 0.6s ease forwards;
}

.stagger > *:nth-child(1) { animation-delay: 0.1s; }
.stagger > *:nth-child(2) { animation-delay: 0.2s; }
.stagger > *:nth-child(3) { animation-delay: 0.3s; }
.stagger > *:nth-child(4) { animation-delay: 0.4s; }

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* =========================
   UTILITY CLASSES
========================= */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* =========================
   RESPONSIVE DESIGN
========================= */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }

    .nav-menu {
        display: none;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.5rem;
    }
}

/* =========================
   DARK MODE ENHANCEMENTS
========================= */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: var(--gray-950);
        --bg-secondary: var(--gray-900);
        --bg-card: var(--gray-800);
        --bg-surface: var(--gray-700);
    }
}

/* =========================
   PRINT STYLES
========================= */
@media print {
    .navbar,
    .btn,
    .social-links {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }
}

/* =========================
   ACCESSIBILITY
========================= */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =========================
   CUSTOM SCROLLBAR
========================= */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-600);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}