/* ===================================
   CSS Reset & Base Styles
   =================================== */

/* Using a modern CSS reset - learned this from Kevin Powell! */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    /* Setting base font size for rem calculations */
    font-size: 16px;
    /* Smooth scrolling for anchor links */
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    /* Sticky footer technique */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Prevent layout shift for dynamically loaded post images */
.post-card__image {
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background-color: var(--color-border);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Sticky footer: main content grows, footer stays at bottom */
main {
    flex: 1;
}

/* Reserve space for dynamic header to prevent layout shift */
#header-placeholder {
    min-height: 80px;
}

/* Footer placeholder - minimal height since footer is small */
#footer-placeholder {
    margin-top: auto;
}

/* Visually hidden but accessible to screen readers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===================================
   CSS Custom Properties
   =================================== */

:root {
    /* Colors - I picked these to match the Figma design */
    --color-primary: #0E7490;
    --color-secondary: #505050;
    --color-text: #151515;
    --color-text-light: #505050;
    --color-bg: #FFFFFF;
    --color-bg-dark: #151515;
    --color-border: #E5E5E5;
    --color-border-dark: #5a5a5a;
    
    /* Typography */
    --font-heading: 'Merriweather', serif;
    --font-body: 'Roboto', sans-serif;
    
    /* Font Sizes - using rem for accessibility */
    --fs-small: 0.75rem;      /* 12px */
    --fs-base: 0.875rem;      /* 14px */
    --fs-medium: 1rem;        /* 16px */
    --fs-large: 1.25rem;      /* 20px */
    --fs-xl: 1.5rem;          /* 24px */
    --fs-2xl: 2rem;           /* 32px */
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    
    /* Layout */
    --max-width: 1200px;
    --container-padding: 1.25rem;  /* 20px */
}

/* Dark mode color overrides */
body.dark-mode {
    --color-text: #E5E5E5;
    --color-text-light: #B0B0B0;
    --color-bg: #1A1A1A;
    --color-bg-dark: #E5E5E5;
    --color-border: #333333;
    --color-border-dark: #CCCCCC;
    --color-primary: #22D3EE;  /* Lighter teal for dark mode */
}

/* ===================================
   Header Styles
   =================================== */

.site-header {
    background-color: var(--color-bg);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.site-header__container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xs);
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 0;
}

.site-header__logo {
    width: clamp(1.75rem, 4vw, 2.5rem);
    height: auto;
    flex-shrink: 0;
}

.site-header__title {
    font-family: var(--font-heading);
    font-size: clamp(0.875rem, 2.5vw, 1.5rem);
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Dark Mode Toggle Button */
.dark-mode-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: transparent;
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    margin-left: auto;
}

.dark-mode-toggle:hover {
    background-color: var(--color-border);
    border-color: var(--color-text);
    transform: rotate(20deg) scale(1.1);
}

.dark-mode-icon {
    width: 1.25rem;
    height: 1.25rem;
    fill: var(--color-text);
    transition: fill 0.3s ease;
}

/* Hamburger Menu Button */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 1.5rem;
    height: 1.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.hamburger:hover {
    transform: scale(1.1);
}

.hamburger__line {
    width: 1.5rem;
    height: 0.2rem;
    background-color: var(--color-border-dark);
    border-radius: 10px;
    transition: all 0.3s ease;
    transform-origin: center;
}

/* Hamburger animation when active */
.hamburger--active .hamburger__line:nth-child(1) {
    transform: translateY(0.45rem) rotate(45deg);
}

.hamburger--active .hamburger__line:nth-child(2) {
    opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
    transform: translateY(-0.45rem) rotate(-45deg);
}

/* Mobile Navigation - hidden by default on mobile */
.site-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-bg);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 99;
    padding-top: 5rem;
}

.site-nav--active {
    right: 0;
}

.site-nav__list {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: var(--space-md);
}

.site-nav__item {
    border-bottom: 1px solid var(--color-border);
}

.site-nav__link {
    display: block;
    padding: var(--space-md);
    font-size: var(--fs-medium);
    color: var(--color-text);
    font-weight: 600;
    transition: all 0.3s ease;
}

.site-nav__link:hover,
.site-nav__link:focus {
    color: var(--color-primary);
}

/* ===================================
   Footer Styles
   =================================== */

.site-footer {
    background-color: var(--color-bg-dark);
    color: var(--color-bg);
    padding: var(--space-lg) 0;
    margin-top: var(--space-xl);
    text-align: center;
}

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

.site-footer__text {
    font-size: var(--fs-base);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.site-footer__text:last-child {
    margin-bottom: 0;
}

/* ===================================
   Hero Article (Homepage)
   =================================== */

.hero-article {
    background-color: var(--color-bg-dark);
    color: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.hero-article__image {
    width: 100%;
    height: auto;
    object-fit: cover;
    /* Mobile: let the image be its natural height */
}

.hero-article__content {
    padding: var(--space-lg) var(--container-padding);
}

.hero-article__date {
    font-size: var(--fs-small);
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
    color: var(--color-bg);
}

.hero-article__title {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.hero-article__text {
    font-size: var(--fs-medium);
    line-height: 1.6;
    max-width: 50ch;
}

/* ===================================
   Recent Posts Section
   =================================== */

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

.recent-posts__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.posts-grid {
    /* Mobile-first: single column */
    display: grid;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

/* ===================================
   Post Card Styles
   =================================== */

.post-card {
    background-color: var(--color-bg);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.post-card__link {
    display: block;
}

.post-card__image {
    width: 100%;
    height: 232px;
    object-fit: cover;
}

.post-card__content {
    padding: var(--space-md);
}

.post-card__date {
    font-size: var(--fs-small);
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-xs);
}

.post-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-large);
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.post-card__excerpt {
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--color-text-light);
}

/* Hidden posts for View More functionality */
.post-card--hidden {
    display: none;
}

.post-card--visible {
    animation: fadeIn 0.5s ease-in;
}

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

/* Scroll animations - elements fade in when they come into view */
.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   View More Button
   =================================== */

.view-more-btn {
    display: block;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-text);
    color: var(--color-bg);
    font-size: var(--fs-medium);
    font-weight: 700;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.view-more-btn:hover,
.view-more-btn:focus {
    background-color: var(--color-primary);
}

/* ===================================
   Article Page Styles
   =================================== */

.article {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl) var(--container-padding);
}

.article__header {
    margin-bottom: var(--space-lg);
}

.article__date {
    font-size: var(--fs-small);
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--space-sm);
}

.article__title {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    line-height: 1.2;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.article__intro {
    font-size: var(--fs-large);
    line-height: 1.6;
    color: var(--color-text-light);
}

.article__image {
    width: 100%;
    height: auto;
    margin: var(--space-lg) 0;
    border-radius: 4px;
}

.article__content {
    font-size: var(--fs-medium);
    line-height: 1.8;
    color: var(--color-text);
}

.article__content h2 {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

.article__content p {
    margin-bottom: var(--space-md);
}

/* ===================================
   About Page Styles
   =================================== */

.about-hero {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl) var(--container-padding);
}

.about-hero__image {
    width: 100%;
    max-width: 200px;
    margin: 0 auto var(--space-lg);
    border-radius: 50%;
    object-fit: cover;
    border: 10px solid var(--color-primary);
    box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.3);
}

.about-hero__title {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    line-height: 1.3;
    margin-bottom: var(--space-md);
    color: var(--color-text);
    text-align: center;
}

.about-hero__text {
    font-size: var(--fs-medium);
    line-height: 1.6;
    color: var(--color-text-light);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--container-padding) var(--space-xl);
}

.about-content__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    margin-bottom: var(--space-md);
    color: var(--color-text);
    text-align: center;
}

.about-content__text {
    font-size: var(--fs-medium);
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

/* ===================================
   Responsive Design - Tablet & Up
   =================================== */

@media (min-width: 640px) {
    /* Increase base font size slightly */
    :root {
        --fs-base: 1rem;
        --fs-large: 1.5rem;
        --fs-xl: 1.75rem;
        --fs-2xl: 2.5rem;
    }
    
    /* Hide hamburger on tablet and desktop */
    .hamburger {
        display: none;
    }
    
    /* Show navigation normally on tablet/desktop */
    .site-nav {
        position: static;
        width: auto;
        height: auto;
        background: none;
        box-shadow: none;
        padding: 0;
    }
    
    .site-nav__list {
        flex-direction: row;
        gap: var(--space-md);
        padding: 0;
    }
    
    .site-nav__item {
        border-bottom: none;
    }
    
    .site-nav__link {
        padding: 0;
        font-size: var(--fs-base);
        color: var(--color-text-light);
    }
    
    /* Posts grid: 2 columns on tablet */
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-article__content {
        padding: var(--space-xl) var(--container-padding);
    }
}

/* ===================================
   Responsive Design - Desktop
   =================================== */

@media (min-width: 1024px) {
    :root {
        --container-padding: 2rem;
        --space-xl: 4rem;
    }
    
    /* Header adjustments for desktop */
    .site-header {
        padding: var(--space-lg) 0;
    }
    
    /* Hero article with image overlay on desktop */
    .hero-article {
        position: relative;
        min-height: 500px;
        display: grid;
        align-items: end;
    }
    
    .hero-article__image {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        z-index: 0;
    }
    
    /* Add dark overlay for better text readability */
    .hero-article::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
        z-index: 1;
    }
    
    .hero-article__content {
        position: relative;
        z-index: 2;
        max-width: var(--max-width);
        margin: 0 auto;
        width: 100%;
    }
    
    /* Posts grid: 3 columns on desktop */
    .posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* About page: side-by-side layout */
    .about-hero {
        display: grid;
        grid-template-columns: 2fr 4fr;
        gap: var(--space-xl);
        align-items: center;
    }
    
    .about-hero__image {
        margin: 0;
        
    }

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

/* ===================================
   Quick Links Section
   =================================== */

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

.section-title {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-text);
    text-align: center;
}

.links-grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.link-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.3s ease;
    text-decoration: none;
    min-width: 18.75rem; /* 300/16 = 18.75rem */
    max-width: 400px;
    justify-content: center;
}

.link-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary);
}

.link-icon {
    font-size: 2rem;
    min-width: 3rem;
    text-align: center;
}

.logo-icon {
    width: 3rem;
    height: auto;
    border-radius: 50%;
    padding: 0 .25rem;
}

.link-content h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-medium);
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.link-content p {
    font-size: var(--fs-small);
    color: var(--color-text-light);
    margin: 0;
}

/* ===================================
   Connect / Social Media Section
   =================================== */

.connect-with-me {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--container-padding) var(--space-xl);
    text-align: center;
}

.connect-with-me h4 {
    font-family: var(--font-heading);
    font-size: var(--fs-large);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: transparent;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.social-links a:hover .social-icon {
    fill: white;
}

.social-icon {
    transition: fill 0.3s ease;
}

/* Tablet and larger screens */
@media (min-width: 640px) {
    .links-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        justify-items: center;
    }
    
    .link-card {
        width: auto;
        min-width: 280px;
    }
}

/* Desktop screens */
@media (min-width: 1024px) {
    .links-grid {
        grid-template-columns: repeat(3, 1fr);
        justify-items: center;
    }
    
    .link-card {
        min-width: 300px;
    }
    
    .social-links a {
        width: 3rem;
        height: 3rem;
    }
}

/* Fix email icon visibility on hover */
.social-links a:hover svg[stroke] {
    stroke: var(--color-bg-dark);
}

/* ===================================
   Contact Page Styles
   =================================== */

.contact-page {
    max-width: var(--max-width);
    margin: 0 auto;
}

.contact-hero {
    padding: var(--space-xl) var(--container-padding);
    text-align: center;
    background-color: var(--color-bg);
}

.contact-hero__title {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.contact-hero__text {
    font-size: var(--fs-medium);
    line-height: 1.6;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.contact-container {
    display: grid;
    gap: var(--space-xl);
    padding: var(--space-xl) var(--container-padding);
}

/* Contact Form */
.contact-form-section {
    background-color: var(--color-bg);
    padding: var(--space-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.contact-form__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--color-text);
}

.form-input,
.form-textarea {
    padding: var(--space-sm);
    font-size: var(--fs-base);
    font-family: var(--font-body);
    border: 2px solid var(--color-border);
    border-radius: 4px;
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit-btn {
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-text);
    color: var(--color-bg);
    font-size: var(--fs-medium);
    font-weight: 700;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
}

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

.form-status {
    text-align: center;
    font-size: var(--fs-base);
    margin-top: var(--space-sm);
}

.form-status.success {
    color: #10b981;
}

.form-status.error {
    color: #ef4444;
}

/* Contact Information */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-info__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.contact-info__item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-md);
    background-color: var(--color-bg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-info__item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.contact-info__icon {
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-primary);
    fill: var(--color-primary);
}

.contact-info__content h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-medium);
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.contact-info__content a {
    color: var(--color-text-light);
    transition: color 0.3s ease;
    word-break: break-all;
}

.contact-info__content a:hover {
    color: var(--color-primary);
}

.contact-info__social {
    padding: var(--space-md);
    background-color: var(--color-bg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.contact-info__social h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-medium);
    color: var(--color-text);
    margin-bottom: var(--space-md);
    text-align: center;
}

.contact-info__social .social-links {
    justify-content: center;
}

/* Responsive - Tablet and Desktop */
@media (min-width: 768px) {
    .contact-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
    
    .contact-form-section {
        grid-column: 1;
    }
    
    .contact-info {
        grid-column: 2;
    }
}

@media (min-width: 1024px) {
    .contact-container {
        grid-template-columns: 2fr 1fr;
    }
}