/* ProprioVoice™ Global Styles */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Colors */
    --color-primary: #1E3A8A;
    /* Deep Blue */
    --color-primary-light: #2563EB;
    --color-secondary: #0D9488;
    /* Teal */
    --color-secondary-dark: #0F766E;
    --color-accent: #F97316;
    /* Orange */
    --color-accent-hover: #EA580C;

    --color-white: #FFFFFF;
    --color-slate-50: #F8FAFC;
    --color-slate-100: #F1F5F9;
    --color-slate-200: #E2E8F0;
    --color-slate-300: #CBD5E1;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1E293B;
    --color-slate-900: #0F172A;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A8A 100%);
    --gradient-accent: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    --gradient-text: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 100%);
    --gradient-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 100%);

    /* Premium Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-premium: 0 20px 40px -5px rgba(30, 58, 138, 0.1), 0 10px 20px -5px rgba(30, 58, 138, 0.05);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*,
*::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(--color-white);
    color: var(--color-slate-600);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-slate-900);
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul,
ol {
    list-style: none;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-4xl) 0;
}

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

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

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

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

.bg-light {
    background-color: var(--color-slate-50);
}

.bg-white {
    background-color: var(--color-white);
}

.bg-primary {
    background-color: var(--color-primary);
    color: white;
}

/* Cards */
.card {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-slate-100);
    /* Subtler border */
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-premium);
    border-color: var(--color-slate-200);
}

/* Subtle accent line on top of hover, or all simple cards */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-slate-900);
}

/* Feature Grid */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-slate-700);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-slate-300);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    color: var(--color-slate-900);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    font-family: inherit;
    font-size: 1rem;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

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

/* Flex Utilities */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

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

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

/* Mobile Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.25rem;
    }

    h2 {
        font-size: 1.875rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--color-slate-600);
}

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

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-slate-800);
}

/* Hero Section */
.hero {
    padding-top: calc(var(--spacing-4xl) + 80px);
    /* Offset for fixed nav */
    padding-bottom: var(--spacing-4xl);
    background: var(--gradient-hero);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.02em;
}

.hero p {
    color: var(--color-slate-200);
}

.credibility-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--color-secondary);
    /* Lighter Teal on Dark */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(255, 255, 255, 0.1);
    display: inline-flex;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-cta-group {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

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

/* Footer */
.footer {
    background-color: var(--color-slate-900);
    color: var(--color-slate-300);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

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

.footer-heading {
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-slate-300);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--color-slate-800);
    padding-top: var(--spacing-xl);
    text-align: center;
    font-size: 0.875rem;
}

/* Responsive Nav */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* JS will toggle this */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-cta-group {
        flex-direction: column;
    }
}

/* Background Patterns */
.bg-pattern-dots {
    background-image: radial-gradient(var(--color-slate-200) 1px, transparent 1px);
    background-size: 20px 20px;
}

.bg-pattern-grid {
    background-size: 40px 40px;
    background-image: linear-gradient(to right, var(--color-slate-100) 1px, transparent 1px),
        linear-gradient(to bottom, var(--color-slate-100) 1px, transparent 1px);
    mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
}

.bg-pattern-waves {
    background: repeating-radial-gradient(circle at 0 0, transparent 0, var(--color-slate-50) 40px), repeating-linear-gradient(#ffffff55, #ffffff);
}