/* ==========================================================================
   Axis Blog Theme - Custom Ghost Theme for Pivotal Energy Solutions
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Axis Brand Colors)
   -------------------------------------------------------------------------- */
:root {
    /* Axis Brand Colors */
    --color-primary: #bf0d25;
    --color-primary-dark: #970a1d;
    --color-accent: #F17F29;
    --color-success: #419641;
    --color-info: #2aabd2;

    /* Neutrals */
    --color-dark: #222725;
    --color-gray-900: #333333;
    --color-gray-700: #555555;
    --color-gray-500: #888888;
    --color-gray-300: #D1D1D1;
    --color-gray-100: #f5f5f5;
    --color-white: #ffffff;

    /* Typography */
    --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-serif: Georgia, "Times New Roman", serif;
    --font-mono: Menlo, Monaco, Consolas, "Courier New", monospace;

    /* Font Sizes */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */

    /* 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;

    /* Layout */
    --container-width: 1200px;
    --container-narrow: 720px;
    --header-height: 70px;

    /* Borders & Shadows */
    --border-radius: 4px;
    --border-radius-lg: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

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

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md);
    font-family: var(--font-sans);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-dark);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin: 0 0 var(--spacing-lg);
}

ul, ol {
    margin: 0 0 var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.site-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.site-main {
    flex: 1;
    padding: var(--spacing-2xl) 0;
}

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

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

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

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

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

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-dark);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.header-brand {
    flex-shrink: 0;
}

.site-logo {
    display: flex;
    align-items: center;
}

.site-logo img {
    height: 35px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.site-logo:hover img {
    opacity: 0.8;
}

.header-nav {
    flex: 1;
    display: flex;
    justify-content: flex-start;
    margin-left: var(--spacing-xl);
}

.header-nav .nav-list {
    display: flex;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
    list-style: none;
}

.header-nav .nav-link {
    color: #adb5bd;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

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

.header-actions {
    flex-shrink: 0;
}

.header-actions .btn-outline {
    color: var(--color-white);
    border-color: var(--color-white);
}

.header-actions .btn-outline:hover {
    color: var(--color-dark);
    background-color: var(--color-white);
}

.mobile-menu-toggle {
    display: none;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

/* --------------------------------------------------------------------------
   Page Header
   -------------------------------------------------------------------------- */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.page-title {
    margin-bottom: var(--spacing-sm);
}

.page-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
    max-width: 600px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Post Feed (Card Grid)
   -------------------------------------------------------------------------- */
.post-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.post-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.post-card-image-link {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.post-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.post-card:hover .post-card-image {
    transform: scale(1.03);
}

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

.post-card-tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.post-card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.post-card-title a {
    color: var(--color-dark);
}

.post-card-title a:hover {
    color: var(--color-primary);
}

.post-card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Post Full (Single Post)
   -------------------------------------------------------------------------- */
.post-header {
    text-align: center;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}

.post-tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.post-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

.post-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
}

.post-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 500;
    color: var(--color-gray-700);
}

.post-feature-image {
    margin: 0 0 var(--spacing-2xl);
}

.post-feature-image img {
    width: 100%;
    max-height: 600px;
    object-fit: cover;
    border-radius: var(--border-radius-lg);
}

.post-feature-image figcaption {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-top: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   Post Content (Article Body)
   -------------------------------------------------------------------------- */
.post-content {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.post-content h2 {
    margin-top: var(--spacing-3xl);
}

.post-content h3 {
    margin-top: var(--spacing-2xl);
}

.post-content a {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-content img {
    border-radius: var(--border-radius);
    margin: var(--spacing-xl) 0;
}

.post-content blockquote {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-left: 4px solid var(--color-primary);
    background-color: var(--color-gray-100);
    font-style: italic;
}

.post-content blockquote p:last-child {
    margin-bottom: 0;
}

.post-content pre {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background-color: var(--color-dark);
    border-radius: var(--border-radius);
    overflow-x: auto;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
}

.post-content pre code {
    color: var(--color-gray-100);
}

.post-content :not(pre) > code {
    padding: 2px 6px;
    background-color: var(--color-gray-100);
    border-radius: 3px;
    color: var(--color-primary);
}

.post-content hr {
    margin: var(--spacing-3xl) 0;
    border: none;
    border-top: 1px solid var(--color-gray-300);
}

.post-content table {
    width: 100%;
    margin: var(--spacing-xl) 0;
    border-collapse: collapse;
}

.post-content th,
.post-content td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    text-align: left;
}

.post-content th {
    background-color: var(--color-gray-100);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   Post Footer
   -------------------------------------------------------------------------- */
.post-footer {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-300);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.post-tags .tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-gray-100);
    border-radius: 50px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.post-tags .tag:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* --------------------------------------------------------------------------
   Comments
   -------------------------------------------------------------------------- */
.post-comments {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-300);
}

/* --------------------------------------------------------------------------
   Author Page
   -------------------------------------------------------------------------- */
.author-header {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.author-profile-image {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--spacing-lg);
}

.author-bio {
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
    max-width: 500px;
    text-align: center;
}

.author-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.author-post-count,
.tag-count {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Pagination
   -------------------------------------------------------------------------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-300);
}

.pagination-prev,
.pagination-next {
    font-weight: 500;
    color: var(--color-primary);
}

.pagination-prev:hover,
.pagination-next:hover {
    color: var(--color-primary-dark);
}

.pagination-info {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Error Page
   -------------------------------------------------------------------------- */
.error-page {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-code {
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-gray-300);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.error-message {
    font-size: var(--font-size-xl);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2xl);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background-color: var(--color-white);
    padding: var(--spacing-md) 0;
}

.site-footer .container {
    text-align: right;
}

.site-footer hr {
    border: none;
    border-top: 1px solid #dee2e6;
    margin: 0 0 var(--spacing-md) 0;
}

.site-footer .copyright {
    font-size: var(--font-size-xs);
    color: #6c757d;
    margin: 0;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
    .header-nav {
        display: none;
    }

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

    .post-title {
        font-size: var(--font-size-3xl);
    }
}

@media (max-width: 600px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 3rem;
    }

    .post-feed {
        grid-template-columns: 1fr;
    }

    .post-title {
        font-size: var(--font-size-2xl);
    }

    .post-content {
        font-size: var(--font-size-base);
    }
}

/* --------------------------------------------------------------------------
   Ghost Card Styles (for embedded content)
   -------------------------------------------------------------------------- */
.kg-card {
    margin: var(--spacing-xl) 0;
}

.kg-image-card img {
    border-radius: var(--border-radius);
}

.kg-width-wide {
    max-width: calc(var(--container-narrow) + 200px);
    margin-left: calc(50% - 50vw + var(--spacing-lg));
    margin-right: calc(50% - 50vw + var(--spacing-lg));
}

.kg-width-full {
    max-width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
}

.kg-bookmark-card {
    background-color: var(--color-gray-100);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.kg-bookmark-container {
    display: flex;
    text-decoration: none;
}

.kg-bookmark-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.kg-bookmark-title {
    font-weight: 600;
    color: var(--color-dark);
}

.kg-bookmark-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin-top: var(--spacing-sm);
}

.kg-bookmark-thumbnail {
    flex-shrink: 0;
    width: 200px;
}

.kg-bookmark-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kg-gallery-card {
    margin: var(--spacing-xl) 0;
}

.kg-gallery-container {
    display: grid;
    gap: var(--spacing-sm);
}

.kg-gallery-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.kg-gallery-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}