/* ===================================
   Import Global Variables
   =================================== */

:root {
    /* Colors */
    --color-primary: #1e3a8a;
    --color-primary-dark: #1e40af;
    --color-accent: #06b6d4;
    --color-accent-dark: #0891b2;
    --color-white: #ffffff;
    --color-black: #0f172a;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    
    /* Exact Yellow.ai Gradient Colors */
    --bg-lavender-light: #dfe4f5;
    --bg-lavender-lighter: #eaecf7;
    --bg-white-tint: #f5f6fa;
    
    /* Typography */
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
    
    /* Transitions */
    --transition-base: 200ms ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-black);
    background: linear-gradient(180deg, #dfe4f5 0%, #eaecf7 20%, #f5f6fa 40%, #ffffff 60%, #f5f6fa 80%, #eaecf7 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    padding-top: 72px;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-black);
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    line-height: 1.7;
    color: var(--color-gray-700);
}

/* ===================================
   Container & Layout
   =================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

section {
    padding: var(--spacing-3xl) 0;
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ===================================
   Blog Hero Section
   =================================== */

.blog-hero {
    background: linear-gradient(135deg, rgba(12, 67, 218, 0.85) 0%, rgba(30, 41, 59, 0.85) 100%);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    color: var(--color-white);
}

.page-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.page-subtitle {
    color: var(--color-gray-200);
    font-size: clamp(1.125rem, 2.5vw, 1.375rem);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===================================
   Blog Content Section
   =================================== */

.blog-content {
    background: transparent;
    min-height: 50vh;
}

.blog-placeholder {
    max-width: 700px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-2xl);
    border-radius: 1rem;
    border: 2px dashed rgba(203, 213, 225, 0.8);
    text-align: center;
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(241, 245, 249, 0.8);
    border-radius: 1rem;
}

.placeholder-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    opacity: 0.6;
}

.placeholder-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-700);
    font-size: 1.75rem;
}

.placeholder-text {
    color: var(--color-gray-600);
    font-size: 1.0625rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

/* Blog Grid Styles (for future use) */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.blog-card {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 1rem;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all var(--transition-base);
}

.blog-card:hover {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.blog-card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--color-gray-100);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-card-content {
    padding: var(--spacing-lg);
}

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.blog-card-title {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.blog-card-excerpt {
    color: var(--color-gray-700);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.blog-read-more {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
}

.blog-read-more:hover {
    text-decoration: underline;
}

/* ===================================
   Newsletter Section
   =================================== */

.newsletter-section {
    background: transparent;
}

.newsletter-card {
    max-width: 700px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-2xl);
    border-radius: 1rem;
    border: 1px solid rgba(226, 232, 240, 0.8);
    text-align: center;
}

.newsletter-title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.newsletter-subtitle {
    color: var(--color-gray-600);
    font-size: 1.0625rem;
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.newsletter-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group-inline {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.newsletter-input {
    flex: 1;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-black);
    background-color: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(226, 232, 240, 0.8);
    border-radius: 0.5rem;
    transition: all var(--transition-base);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.newsletter-input::placeholder {
    color: var(--color-gray-600);
}

.form-message {
    padding: 0.875rem;
    border-radius: 0.5rem;
    font-size: 0.9375rem;
    text-align: center;
    display: none;
}

.form-message.show {
    display: block;
}

.form-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 968px) {
    :root {
        --spacing-3xl: 3rem;
        --spacing-2xl: 2.5rem;
        --container-padding: 1rem;
    }

    body {
        padding-top: 68px;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .blog-card:hover {
        transform: none;
    }
}

@media (max-width: 640px) {
    section {
        padding: var(--spacing-2xl) 0;
    }

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

    .blog-placeholder,
    .newsletter-card {
        padding: var(--spacing-xl);
    }

    .form-group-inline {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .newsletter-input,
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    body {
        padding-top: 64px;
    }

    .page-title {
        font-size: 1.75rem;
    }

    .page-subtitle {
        font-size: 1rem;
    }

    .placeholder-icon {
        width: 64px;
        height: 64px;
    }

    .placeholder-icon img {
        width: 40px;
        height: 40px;
    }

    .placeholder-title,
    .newsletter-title {
        font-size: 1.5rem;
    }

    .newsletter-input {
        padding: 0.75rem;
        font-size: 1rem;
    }
}

/* ===================================
   Accessibility
   =================================== */

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

    .blog-card:hover {
        transform: none;
    }
}

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

/* ===================================
   Print Styles
   =================================== */

@media print {
    body {
        background: white;
    }

    .blog-hero {
        background: white;
        color: black;
    }

    .page-title {
        color: black;
    }

    .newsletter-section {
        display: none;
    }

    .btn {
        display: none;
    }

    .blog-placeholder,
    .blog-card {
        background-color: white;
        border: 1px solid #ccc;
    }
}