/* Custom CSS for Inbox Marketing Website */
/* This file complements Tailwind CSS with custom styles and overrides */

/* CSS Variables for consistent theming */
:root {
    /* Color System */
    --primary: #1E40AF;
    --primary-light: #3B82F6;
    --primary-dark: #1E3A8A;
    --accent: #F97316;
    --accent-light: #FB923C;
    --accent-dark: #EA580C;
    --neutral: #6B7280;
    --neutral-light: #9CA3AF;
    --neutral-dark: #374151;
    
    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing System (8pt grid) */
    --space-1: 0.25rem;  /* 4px */
    --space-2: 0.5rem;   /* 8px */
    --space-3: 0.75rem;  /* 12px */
    --space-4: 1rem;     /* 16px */
    --space-5: 1.25rem;  /* 20px */
    --space-6: 1.5rem;   /* 24px */
    --space-8: 2rem;     /* 32px */
    --space-10: 2.5rem;  /* 40px */
    --space-12: 3rem;    /* 48px */
    --space-16: 4rem;    /* 64px */
    --space-20: 5rem;    /* 80px */
    --space-24: 6rem;    /* 96px */
    --space-32: 8rem;    /* 128px */
    
    /* Font Families */
    --font-roboto: 'Roboto', sans-serif;
    --font-poppins: 'Poppins', sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* Base Styles */
* {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-roboto);
    line-height: 1.6;
    color: #111827;
    font-size: var(--text-base);
}

/* Typography Enhancements */
.font-poppins {
    font-family: var(--font-poppins);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-poppins);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
}

h2 {
    font-size: var(--text-3xl);
    font-weight: 600;
}

h3 {
    font-size: var(--text-2xl);
    font-weight: 600;
}

/* Enhanced Focus States for Accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius);
}

/* Custom Button Styles */
.btn-primary {
    background-color: var(--primary);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-fast);
    border: 2px solid var(--primary);
}

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

.btn-accent {
    background-color: var(--accent);
    color: white;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-fast);
    border: 2px solid var(--accent);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-fast);
    border: 2px solid var(--primary);
}

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

/* Mobile Menu Animation */
.mobile-menu-enter {
    opacity: 0;
    transform: translateY(-10px);
}

.mobile-menu-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all var(--transition-fast);
}

.mobile-menu-exit {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-exit-active {
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

/* Form Enhancements */
.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid #D1D5DB;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
    background-color: white;
}

.form-input:focus {
    border-color: var(--primary);
    ring: 2px solid var(--primary);
    ring-opacity: 0.2;
    outline: none;
}

.form-input::placeholder {
    color: var(--neutral);
}

.form-error {
    border-color: #EF4444;
    background-color: #FEF2F2;
}

.form-success {
    border-color: #10B981;
    background-color: #F0FDF4;
}

/* Card Components */
.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    padding: var(--space-6);
    transition: all var(--transition-fast);
}

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

.card-feature {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-8);
    transition: all var(--transition-fast);
    border: 1px solid #F3F4F6;
}

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

/* Image Optimization */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-rounded {
    border-radius: var(--radius-lg);
}

.img-circle {
    border-radius: 50%;
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Accessibility Improvements */
.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;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    border-radius: var(--radius);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --primary: #0000FF;
        --accent: #FF8000;
        --neutral: #000000;
    }
    
    .card,
    .card-feature {
        border: 2px solid #000000;
    }
}

/* Reduced Motion Support */
@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;
    }
}

/* Print Styles */
@media print {
    .no-print,
    header,
    footer,
    .btn-primary,
    .btn-accent,
    .btn-outline {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
    
    .card,
    .card-feature {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--neutral);
    border-radius: var(--radius);
}

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

/* Responsive Typography */
@media (min-width: 640px) {
    h1 {
        font-size: var(--text-5xl);
    }
    
    h2 {
        font-size: var(--text-4xl);
    }
    
    h3 {
        font-size: var(--text-3xl);
    }
}

@media (min-width: 1024px) {
    h1 {
        font-size: var(--text-6xl);
    }
    
    h2 {
        font-size: var(--text-5xl);
    }
    
    h3 {
        font-size: var(--text-4xl);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn var(--transition-normal) ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-left {
    animation: slideInLeft var(--transition-normal) ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in-right {
    animation: slideInRight var(--transition-normal) ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Utility Classes */
.text-balance {
    text-wrap: balance;
}

.aspect-video {
    aspect-ratio: 16 / 9;
}

.aspect-square {
    aspect-ratio: 1 / 1;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Component-specific Styles */
.hero-overlay {
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.9), rgba(30, 58, 138, 0.9));
}

.testimonial-card {
    position: relative;
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: var(--space-6);
    font-size: 3rem;
    color: var(--primary);
    font-family: var(--font-poppins);
    font-weight: bold;
}

/* Mobile-specific Optimizations */
@media (max-width: 640px) {
    .mobile-padding {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
    
    .mobile-text-center {
        text-align: center;
    }
    
    .mobile-stack > * + * {
        margin-top: var(--space-4);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn-primary,
    .btn-accent,
    .btn-outline,
    .card,
    .card-feature {
        transform: none !important;
    }
    
    .btn-primary:active,
    .btn-accent:active,
    .btn-outline:active {
        transform: scale(0.95);
    }
}

/* Dark Mode Support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles would go here if implemented */
}

/* Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* Container Queries (for modern browsers) */
@container (min-width: 768px) {
    .container-md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Fallback for browsers without container query support */
@supports not (container-type: inline-size) {
    @media (min-width: 768px) {
        .container-md\:grid-cols-2 {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
    }
}