/* 
 * iOS Theme for BSSG
 * Styled after the modern iOS 17 interface with Dynamic Island elements
 */

:root {
    /* iOS color scheme */
    --bg-color: #f2f2f7;
    --card-bg: #ffffff;
    --text-color: #000000;
    --text-secondary: #8e8e93;
    --link-color: #007aff;
    --link-active: #0056b3;
    --header-color: #000000;
    --border-color: #d1d1d6;
    --separator-color: rgba(60, 60, 67, 0.1);
    --accent-color: #007aff;
    --accent-secondary: #34c759;
    --red: #ff3b30;
    --orange: #ff9500;
    --yellow: #ffcc00;
    --green: #34c759;
    --teal: #5ac8fa;
    --blue: #007aff;
    --indigo: #5856d6;
    --purple: #af52de;
    --pink: #ff2d55;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --floating-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    --title-gradient-start: #007aff;
    --title-gradient-end: #5ac8fa;
    
    /* Typography */
    --font-main: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    --font-headings: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    
    /* Sizing and spacing */
    --content-width: 700px;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 20px;
    --button-radius: 8px;
    --dynamic-island-radius: 44px;
    --transition: 0.25s ease;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

/* Base elements */
html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

.container {
    max-width: var(--content-width);
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-md);
    background-color: transparent;
}

/* Card styling for content */
.ios-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    transition: transform var(--transition), box-shadow var(--transition);
}

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

/* Header styling - Dynamic Island inspired */
header {
    background-color: var(--card-bg);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
}

header:hover {
    box-shadow: var(--floating-shadow);
}

/* iOS style site title with gradient */
.site-title {
    font-family: var(--font-headings);
    font-weight: 700;
    color: var(--header-color);
    margin: 0;
    font-size: 1.8rem;
    letter-spacing: -0.02em;
    display: inline-block;
    position: relative;
}

.site-title a {
    text-decoration: none;
    background: linear-gradient(135deg, var(--title-gradient-start), var(--title-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
    transition: all var(--transition);
    position: relative;
}

.site-title a:hover {
    transform: translateY(-1px) scale(1.01);
    background: linear-gradient(135deg, var(--title-gradient-end), var(--title-gradient-start));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Fallback for browsers that don't support background-clip */
@supports not (background-clip: text) {
    .site-title a {
        color: var(--accent-color);
    }
    
    .site-title a:hover {
        color: var(--teal);
    }
}

header h1 {
    font-family: var(--font-headings);
    font-weight: 700;
    color: var(--header-color);
    margin: 0;
    font-size: 1.8rem;
    letter-spacing: -0.02em;
}

header p {
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.9;
}

/* Dynamic Island-inspired floating element */
.dynamic-island {
    position: absolute;
    top: -35px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 35px;
    background-color: rgba(0, 0, 0, 0.8);
    border-radius: 0 0 var(--dynamic-island-radius) var(--dynamic-island-radius);
    z-index: 5;
    opacity: 0;
    transition: opacity var(--transition), transform var(--transition);
}

header:hover .dynamic-island {
    opacity: 1;
    transform: translateX(-50%) translateY(5px);
}

/* Mobile menu toggle button - iOS style */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--accent-color);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
    margin: 0 auto var(--spacing-sm);
    transition: color var(--transition);
}

.menu-toggle:hover, .menu-toggle:focus {
    color: var(--link-active);
}

/* Navigation - iOS style tab bar */
nav {
    display: flex;
    background-color: var(--card-bg);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
    justify-content: space-around;
    align-items: center;
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
    transition: all var(--transition);
}

nav:hover {
    box-shadow: var(--floating-shadow);
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition);
    text-align: center;
    flex-grow: 1;
    padding: var(--spacing-sm) 0;
    border-radius: var(--button-radius);
    position: relative;
}

nav a::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transform: translateX(-50%);
    transition: width var(--transition);
}

nav a:hover, nav a.active {
    color: var(--accent-color);
    background-color: rgba(0, 122, 255, 0.1);
}

nav a:hover::after, nav a.active::after {
    width: 30%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headings);
    color: var(--header-color);
    line-height: 1.3;
    margin: var(--spacing-lg) 0 var(--spacing-md);
    font-weight: 600;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.1rem;
}

article h1 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

p {
    margin: 0 0 var(--spacing-lg);
    line-height: 1.6;
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: all var(--transition);
    position: relative;
}

a:hover, a:active {
    color: var(--link-active);
}

/* iOS-style buttons */
.ios-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    border-radius: var(--button-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on iOS */
}

.ios-button:hover, .ios-button:active {
    background-color: var(--link-active);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.ios-button.secondary {
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--accent-color);
}

.ios-button.secondary:hover, .ios-button.secondary:active {
    background-color: rgba(0, 122, 255, 0.2);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.15);
}

.ios-button.destructive {
    background-color: var(--red);
}

.ios-button.destructive:hover, .ios-button.destructive:active {
    background-color: #e63028;
    box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

/* Article styling */
article {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

article .meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--separator-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    align-items: center;
}

.reading-time {
    display: inline-flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.reading-time::before {
    content: "⏱";
    margin-right: var(--spacing-xs);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.tags a {
    display: inline-block;
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--accent-color);
    padding: 0.25rem 0.75rem;
    font-size: 0.85rem;
    border-radius: 16px;
    text-decoration: none;
    transition: all var(--transition);
    border: 1px solid rgba(0, 122, 255, 0.2);
}

.tags a:hover, .tags a:active {
    background-color: rgba(0, 122, 255, 0.2);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.2);
}

.tags-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.tag-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    background-color: var(--accent-color);
    color: white;
    border-radius: 11px;
    font-size: 0.75rem;
    margin-left: var(--spacing-xs);
    padding: 0 var(--spacing-xs);
}

/* Code styling */
code {
    font-family: var(--font-mono);
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-color);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

pre {
    background-color: #2a2a2c;
    color: #f2f2f7;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
}

pre code {
    background-color: transparent;
    color: inherit;
    padding: 0;
    border: none;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre;
}

/* Image styling - iOS style */
img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    display: block;
    margin: var(--spacing-lg) auto;
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
    border: 1px solid var(--border-color);
}

img:hover {
    transform: scale(1.01);
    box-shadow: var(--floating-shadow);
}

/* Footer styling - iOS style */
footer {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--card-shadow);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

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

footer a {
    color: var(--accent-color);
}

/* Date header for post lists */
.date-header {
    font-family: var(--font-headings);
    color: var(--text-secondary);
    font-size: 1rem;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* Posts list styling */
.posts-list article {
    transition: all var(--transition);
    cursor: pointer;
}

.posts-list article:hover, .posts-list article:active {
    transform: translateY(-2px);
    box-shadow: var(--floating-shadow);
}

.posts-list h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
}

.posts-list h3 a {
    color: var(--header-color);
}

.posts-list h3 a:hover, .posts-list h3 a:active {
    color: var(--accent-color);
}

.summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

/* Blockquote styling - iOS style */
blockquote {
    border-left: 4px solid var(--accent-color);
    background-color: rgba(0, 122, 255, 0.05);
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    position: relative;
}

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

/* Table styling - iOS style */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--separator-color);
}

th {
    background-color: rgba(0, 0, 0, 0.02);
    font-weight: 600;
    color: var(--header-color);
}

tr:last-child td {
    border-bottom: none;
}

/* iOS-style switch */
.ios-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
    margin: 0 var(--spacing-xs);
}

.ios-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.ios-switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #e9e9eb;
    transition: var(--transition);
    border-radius: 34px;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.ios-switch-slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 2px;
    bottom: 1px;
    background-color: white;
    transition: var(--transition);
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.ios-switch input:checked + .ios-switch-slider {
    background-color: var(--green);
}

.ios-switch input:checked + .ios-switch-slider:before {
    transform: translateX(22px);
}

/* Horizontal rule - iOS style */
hr {
    border: none;
    height: 1px;
    background-color: var(--separator-color);
    margin: var(--spacing-lg) 0;
}

/* iOS-style alerts */
.ios-alert {
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    background-color: rgba(0, 122, 255, 0.1);
    border-left: 4px solid var(--accent-color);
}

.ios-alert.success {
    background-color: rgba(52, 199, 89, 0.1);
    border-left-color: var(--green);
}

.ios-alert.warning {
    background-color: rgba(255, 149, 0, 0.1);
    border-left-color: var(--orange);
}

.ios-alert.error {
    background-color: rgba(255, 59, 48, 0.1);
    border-left-color: var(--red);
}

/* Pagination - iOS style */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-md);
    gap: var(--spacing-md);
}

.pagination a {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--card-bg);
    color: var(--accent-color);
    border-radius: var(--button-radius);
    text-decoration: none;
    transition: all var(--transition);
    border: 1px solid rgba(0, 122, 255, 0.2);
    box-shadow: var(--card-shadow);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
}

.pagination a:hover, .pagination a:active {
    background-color: rgba(0, 122, 255, 0.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.pagination .page-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Featured image with iOS styling */
.featured-image {
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
}

.featured-image:hover {
    transform: translateY(-2px);
    box-shadow: var(--floating-shadow);
}

.featured-image img {
    width: 100%;
    height: auto;
    margin: 0;
    border-radius: 0;
    border: none;
    box-shadow: none;
    display: block;
    transition: transform var(--transition);
    object-fit: cover;
    max-height: 400px;
}

.featured-image:hover img {
    transform: scale(1.02);
}

.featured-image .image-caption {
    background-color: rgba(242, 242, 247, 0.8);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-color);
    font-size: 0.9rem;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

/* Lists with iOS styling */
ul, ol {
    padding-left: 1.5rem;
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

ul li, ol li {
    margin-bottom: var(--spacing-xs);
}

/* Advanced responsive design */
@media (max-width: 768px) {
    body {
        font-size: 15px;
        padding: 0 var(--spacing-xs);
    }
    
    .container {
        margin: var(--spacing-md) auto;
        padding: 0 var(--spacing-xs);
    }
    
    article, header, footer {
        padding: var(--spacing-md);
    }
    
    h1 {
        font-size: 1.6rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    /* Mobile navigation */
    .menu-toggle {
        display: block;
        width: 100%;
        background-color: var(--card-bg);
        border-radius: var(--radius);
        box-shadow: var(--card-shadow);
        padding: var(--spacing-sm);
        color: var(--accent-color);
        font-weight: 600;
        margin-bottom: var(--spacing-sm);
        border: 1px solid var(--border-color);
    }
    
    nav {
        max-height: 0;
        overflow: hidden;
        padding: 0 var(--spacing-sm);
        flex-direction: column;
        transition: max-height var(--transition), padding var(--transition);
        margin-bottom: var(--spacing-sm);
    }
    
    nav.open {
        max-height: 300px;
        padding: var(--spacing-sm);
    }
    
    nav a {
        padding: var(--spacing-sm);
        width: 100%;
        margin: var(--spacing-xs) 0;
    }
    
    .dynamic-island {
        display: none;
    }
    
    .featured-image img {
        max-height: 250px;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .pagination .page-info {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .pagination a {
        flex: 1;
        min-width: 0;
    }
    
    .tags-list {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.25rem;
        --spacing-md: 0.875rem;
        --spacing-sm: 0.625rem;
        --radius: 12px;
    }
    
    body {
        font-size: 14px;
    }
    
    .container {
        margin: var(--spacing-sm) auto;
    }
    
    h1 {
        font-size: 1.4rem;
    }
    
    h2 {
        font-size: 1.2rem;
    }
    
    h3 {
        font-size: 1.05rem;
    }
    
    .site-title {
        font-size: 1.5rem;
    }
    
    article, header, footer {
        padding: var(--spacing-md);
    }
    
    article .meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .tags {
        flex-wrap: wrap;
    }
    
    pre {
        padding: var(--spacing-sm);
    }
    
    .featured-image img {
        max-height: 200px;
    }
    
    blockquote {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .ios-button {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    .tags-list {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

/* Dark mode support - iOS style */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #1c1c1e;
        --card-bg: #2c2c2e;
        --text-color: #ffffff;
        --text-secondary: #8e8e93;
        --header-color: #ffffff;
        --border-color: #3d3d41;
        --separator-color: rgba(255, 255, 255, 0.1);
        --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        --floating-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    }
    
    img {
        filter: brightness(0.9);
    }
    
    pre {
        background-color: #000000;
    }
    
    code {
        background-color: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
    }
    
    .featured-image .image-caption {
        background-color: rgba(44, 44, 46, 0.8);
    }
    
    .ios-button.secondary {
        background-color: rgba(0, 122, 255, 0.2);
    }
    
    blockquote {
        background-color: rgba(0, 122, 255, 0.1);
    }
    
    table {
        border: 1px solid var(--border-color);
    }
    
    th {
        background-color: rgba(255, 255, 255, 0.05);
    }
}

/* JavaScript for mobile menu toggle */
/* Add this to scripts.js or inline in HTML */
/*
document.addEventListener('DOMContentLoaded', function() {
    const menuToggle = document.querySelector('.menu-toggle');
    const nav = document.querySelector('nav');
    
    if (menuToggle && nav) {
        menuToggle.addEventListener('click', function() {
            nav.classList.toggle('open');
            menuToggle.setAttribute('aria-expanded', 
                nav.classList.contains('open') ? 'true' : 'false');
        });
    }
});
*/