/* MailAtoll.com - Main Stylesheet */
/* GDPR Compliant - All resources self-hosted */

/* CSS Custom Properties for Theming */
:root {
    /* Color Palette - Premium Ocean Blues */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    
    /* Neutral Grays */
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Accent Colors */
    --color-accent-teal: #0d9488;
    --color-accent-teal-light: #2dd4bf;
    --color-accent-teal-dark: #0f766e;
    
    /* Semantic Colors */
    --color-text: var(--color-gray-800);
    --color-text-light: var(--color-gray-600);
    --color-text-lighter: var(--color-gray-500);
    --color-background: #ffffff;
    --color-surface: var(--color-gray-50);
    --color-border: var(--color-gray-200);
    
    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: var(--spacing-md);
}

/* Self-hosted Inter font for GDPR compliance */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/Inter-Regular.ttf') format('truetype');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/Inter-Medium.ttf') format('truetype');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../assets/fonts/Inter-SemiBold.ttf') format('truetype');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/Inter-Bold.ttf') format('truetype');
}

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

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

body {
    font-family: var(--font-family-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em; /* Base negative letter-spacing for all headings */
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.045em; /* Noticeable tightening for largest headings */
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.04em; /* Pronounced tightening */
}

h3 {
    font-size: 1.5rem;
    letter-spacing: -0.035em; /* Clear tightening */
}

h4 {
    font-size: 1.25rem;
    letter-spacing: -0.03em; /* Moderate tightening */
}

h5, h6 {
    letter-spacing: -0.025em; /* Subtle tightening for smaller headings */
}

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

a {
    color: var(--color-primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-700);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* Section Base Styles */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-text-light);
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-800));
}

.btn-secondary {
    background-color: white;
    color: var(--color-gray-700);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-gray-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-600);
}

.btn-outline:hover {
    background-color: var(--color-primary-600);
    color: white;
    transform: translateY(-2px);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.nav-logo {
    font-size: 1.25rem;          /* Changed from 1.5rem to match blog (20px) */
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    letter-spacing: -0.02em;     /* Added negative letter-spacing to match blog */
}

.nav-logo::before {
    content: "⛵";
    font-size: 1.25rem;
}

.nav-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-gray-600);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
}

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

.nav-link {
    padding: var(--spacing-sm) 0;
    color: var(--color-gray-700);
    font-weight: var(--font-weight-medium);
    letter-spacing: -0.015em; /* Noticeable tightening for navigation links */
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary-600);
}

/* Hero Section */
.hero {
    padding-top: calc(var(--spacing-4xl) + 60px); /* Account for fixed nav */
    padding-bottom: var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, white 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url('../assets/images/backgrounds/hero-pattern.svg') no-repeat;
    background-size: cover;
    opacity: 0.1;
    z-index: 0;
}

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

.hero-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-gray-900), var(--color-primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.hero-body {
    font-size: 0.95rem; /* Reduced from 1.125rem for better readability */
    color: var(--color-text);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7; /* Slightly increased line height for better readability */
}

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

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Responsive adjustments will be in responsive.css */

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.float {
    animation: float 3s ease-in-out infinite;
}

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

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .nav,
    .btn,
    .hero-cta,
    .back-to-top {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .section {
        padding: 1cm 0;
        page-break-inside: avoid;
    }
}