/* ============================================================================
   PERSONAL PORTFOLIO - CSS
   Interactive Blackboard/Chalk-Based Design
   ============================================================================ */

/* CSS Variables */
:root {
    /* Colors */
    --board-bg-primary: #111412;
    --board-bg-secondary: #151917;
    --board-bg-tertiary: #1B1F1C;
    
    --chalk-primary: #f2f0e6;
    --chalk-secondary: #c9ccc4;
    --chalk-muted: #8f958e;
    --chalk-accent: #e6d7b8;
    
    --text-primary: #f2f0e6;
    --text-secondary: #c9ccc4;
    --text-muted: #8f958e;
    
    /* Transitions */
    --transition-fast: 200ms;
    --transition-medium: 500ms;
    --transition-slow: 800ms;
    --transition-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-easing-ease-out: cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Z-Index */
    --z-background: 0;
    --z-content: 10;
    --z-header: 100;
    --z-modal: 1000;
    --z-cursor: 10000;
}

/* ============================================================================
   RESET & BASE
   ============================================================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background: linear-gradient(135deg, var(--board-bg-primary) 0%, var(--board-bg-secondary) 50%, var(--board-bg-tertiary) 100%),
                radial-gradient(ellipse at center, rgba(242, 240, 230, 0.02) 0%, rgba(0, 0, 0, 0.1) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
}

body {
    font-family: 'JetBrains Mono', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: transparent;
    overflow-x: hidden;
    position: relative;
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

a:hover {
    color: var(--chalk-accent);
}

/* ============================================================================
   CHALK EFFECTS
   ============================================================================ */

.chalk-text {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 
        1px 1px 0 rgba(0, 0, 0, 0.3),
        2px 2px 3px rgba(0, 0, 0, 0.2);
}

.chalk-title {
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 3.5rem;
    letter-spacing: 3px;
    text-shadow: 
        2px 2px 0 rgba(0, 0, 0, 0.3),
        4px 4px 8px rgba(0, 0, 0, 0.2);
    color: var(--chalk-primary);
    transform: scaleY(1.1);
    position: relative;
}

.chalk-divider {
    height: 2px;
    width: 200px;
    background: linear-gradient(90deg, transparent, var(--chalk-primary), transparent);
    margin: var(--spacing-lg) 0;
    position: relative;
}

.chalk-divider::before,
.chalk-divider::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--chalk-primary);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
}

.chalk-divider::before { left: -8px; }
.chalk-divider::after { right: -8px; }

/* ============================================================================
   BUTTONS & INTERACTIVE ELEMENTS
   ============================================================================ */

.chalk-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--chalk-primary);
    background: transparent;
    color: var(--chalk-primary);
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all var(--transition-fast) var(--transition-easing);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    border-radius: var(--border-radius-sm);
}

.chalk-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--chalk-primary);
    transform: translateX(-100%);
    transition: transform var(--transition-fast) var(--transition-easing);
    z-index: -1;
}

.chalk-button:hover {
    color: var(--board-bg-primary);
    border-color: var(--chalk-accent);
}

.chalk-button:hover::before {
    transform: translateX(0);
    background: var(--chalk-accent);
}

.chalk-button:focus {
    outline: 2px solid var(--chalk-accent);
    outline-offset: 2px;
}

.chalk-button.small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

.chalk-button-secondary {
    border-color: var(--chalk-secondary);
    color: var(--chalk-secondary);
}

.chalk-button-secondary::before {
    background: var(--chalk-secondary);
}

.chalk-button-secondary:hover {
    color: var(--board-bg-primary);
    border-color: var(--chalk-primary);
}

/* ============================================================================
   CARDS & CONTAINERS
   ============================================================================ */

.chalk-card {
    border: 2px solid var(--chalk-primary);
    background: rgba(21, 25, 23, 0.5);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-medium) var(--transition-easing);
    position: relative;
    overflow: hidden;
}

.chalk-card::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(45deg, transparent, rgba(242, 240, 230, 0.1), transparent);
    opacity: 0;
    transition: opacity var(--transition-medium) var(--transition-easing);
    pointer-events: none;
}

.chalk-card:hover {
    border-color: var(--chalk-accent);
    background: rgba(21, 25, 23, 0.8);
    box-shadow: 0 8px 16px rgba(242, 240, 230, 0.1);
}

.chalk-card:hover::before {
    opacity: 1;
}

.card-header {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--chalk-muted);
    margin-bottom: var(--spacing-md);
}

.card-header h3 {
    font-family: 'Caveat', cursive;
    font-size: 1.8rem;
    margin: 0;
}

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

.card-footer {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--chalk-muted);
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================================================
   HEADER & NAVIGATION
   ============================================================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(17, 20, 18, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(242, 240, 230, 0.1);
    z-index: var(--z-header);
    transition: all var(--transition-fast) var(--transition-easing);
}

.header.scrolled {
    background: rgba(17, 20, 18, 0.98);
    border-bottom-width: 2px;
    border-bottom-color: rgba(242, 240, 230, 0.2);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--chalk-primary);
    transition: all var(--transition-fast) var(--transition-easing);
}

.navbar-brand:hover {
    text-shadow: 0 0 10px rgba(242, 240, 230, 0.3);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-secondary);
    position: relative;
    text-transform: uppercase;
    transition: all var(--transition-fast) var(--transition-easing);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--chalk-primary);
    transition: width var(--transition-fast) var(--transition-easing);
}

.nav-link:hover,
.nav-link.active {
    color: var(--chalk-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:focus {
    outline: 2px solid var(--chalk-accent);
    outline-offset: 4px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 6px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--chalk-primary);
    transition: all var(--transition-fast) var(--transition-easing);
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ============================================================================
   LAYOUT
   ============================================================================ */

.main-content {
    width: 100%;
    position: relative;
    z-index: var(--z-content);
}

.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.section:first-of-type {
    padding-top: calc(var(--spacing-xxl) + 80px);
}

.section-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    position: relative;
    display: inline-block;
    width: 100%;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero-section {
    background: linear-gradient(180deg, rgba(242, 240, 230, 0.02) 0%, transparent 100%);
    padding-top: calc(var(--spacing-xxl) + 100px);
}

.hero-content {
    text-align: center;
    animation: fadeInUp 1s var(--transition-easing) 0.5s backwards;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: 8px;
}

.title-line {
    display: block;
    opacity: 0;
    animation: slideInDown 0.8s var(--transition-easing) forwards;
}

.title-line:nth-child(1) {
    animation-delay: 0.6s;
}

.title-line:nth-child(2) {
    animation-delay: 1.2s;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--chalk-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
    animation: fadeIn 1s var(--transition-easing) 1.8s backwards;
}

.hero-description {
    font-size: 1rem;
    color: var(--chalk-muted);
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    animation: fadeIn 1s var(--transition-easing) 2s backwards;
}

.tech-line {
    letter-spacing: 2px;
}

.hero-tagline {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--chalk-primary);
    margin: var(--spacing-lg) 0;
    animation: fadeIn 1s var(--transition-easing) 2.2s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--spacing-xl) 0;
    animation: fadeIn 1s var(--transition-easing) 2.4s backwards;
}

.hero-social {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    animation: fadeIn 1s var(--transition-easing) 2.6s backwards;
}

.social-link {
    font-size: 0.9rem;
    color: var(--chalk-secondary);
    border-bottom: 1px solid transparent;
    padding-bottom: 4px;
    transition: all var(--transition-fast) var(--transition-easing);
}

.social-link:hover {
    border-bottom-color: var(--chalk-primary);
    color: var(--chalk-primary);
}

.chalk-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    animation: bounce 2s infinite;
    color: var(--chalk-primary);
    opacity: 0.6;
}

/* ============================================================================
   REVEAL ANIMATION
   ============================================================================ */

.reveal {
    opacity: 0;
    transform: translateY(40px);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
    transition: all var(--transition-slow) var(--transition-easing);
}

/* ============================================================================
   ABOUT SECTION
   ============================================================================ */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.about-highlight {
    display: flex;
    justify-content: center;
}

.about-highlight .chalk-card {
    max-width: 300px;
}

.card-header {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 2px;
}

/* ============================================================================
   SKILLS SECTION
   ============================================================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.skill-category {
    background: rgba(21, 25, 23, 0.3);
    padding: var(--spacing-lg);
    border-left: 3px solid var(--chalk-primary);
    transition: all var(--transition-medium) var(--transition-easing);
}

.skill-category:hover {
    background: rgba(21, 25, 23, 0.6);
    border-left-color: var(--chalk-accent);
    box-shadow: 0 4px 12px rgba(242, 240, 230, 0.1);
}

.category-title {
    font-family: 'Caveat', cursive;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--chalk-primary);
}

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

.skill-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(242, 240, 230, 0.1);
    border: 1px solid var(--chalk-muted);
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    color: var(--chalk-secondary);
    transition: all var(--transition-fast) var(--transition-easing);
    cursor: default;
}

.skill-tag:hover {
    background: rgba(242, 240, 230, 0.15);
    border-color: var(--chalk-primary);
    color: var(--chalk-primary);
}

/* ============================================================================
   EXPERIENCE SECTION
   ============================================================================ */

.experience-timeline {
    position: relative;
    padding: var(--spacing-xl) 0;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--chalk-primary), transparent);
    transform: translateX(-50%);
}

.experience-item {
    margin-bottom: var(--spacing-xxl);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    opacity: 0;
    animation: fadeIn 0.8s var(--transition-easing) forwards;
}

.experience-item:nth-child(odd) .experience-content {
    text-align: right;
    padding-right: var(--spacing-lg);
    border-right: 2px solid var(--chalk-primary);
}

.experience-item:nth-child(even) .experience-content {
    text-align: left;
    padding-left: var(--spacing-lg);
    border-left: 2px solid var(--chalk-primary);
    grid-column: 2 / 4;
}

.experience-item.active .experience-content {
    animation: slideInLeft 0.8s var(--transition-easing);
}

.timeline-dot {
    width: 16px;
    height: 16px;
    background: var(--chalk-primary);
    border: 3px solid var(--board-bg-primary);
    border-radius: 50%;
    position: relative;
    z-index: 10;
    box-shadow: 0 0 12px rgba(242, 240, 230, 0.3);
}

.experience-content {
    transition: all var(--transition-medium) var(--transition-easing);
}

.experience-content:hover {
    transform: translateY(-4px);
}

.experience-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--chalk-primary);
}

.experience-role {
    font-size: 1.1rem;
    color: var(--chalk-secondary);
    margin-bottom: var(--spacing-xs);
}

.experience-dates {
    font-size: 0.9rem;
    color: var(--chalk-muted);
    margin-bottom: var(--spacing-sm);
}

.experience-highlights {
    list-style: none;
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.experience-highlights li {
    padding-left: 20px;
    position: relative;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.experience-highlights li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--chalk-accent);
}

.experience-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

/* ============================================================================
   PROJECTS SECTION
   ============================================================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card .chalk-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-title {
    margin: 0;
    font-size: 1.5rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tech-badge {
    display: inline-block;
    padding: 4px 8px;
    background: rgba(242, 240, 230, 0.1);
    border: 1px solid var(--chalk-muted);
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    color: var(--chalk-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================================================
   ARCHITECTURE SECTION
   ============================================================================ */

.architecture-diagram {
    margin-bottom: var(--spacing-xl);
    display: flex;
    justify-content: center;
}

.architecture-svg {
    max-width: 100%;
    height: auto;
    max-height: 500px;
    filter: drop-shadow(0 4px 12px rgba(242, 240, 230, 0.1));
}

.architecture-svg text {
    fill: var(--chalk-primary);
}

.arch-layer {
    cursor: pointer;
    transition: all var(--transition-fast) var(--transition-easing);
}

.arch-layer:hover {
    filter: drop-shadow(0 0 8px rgba(242, 240, 230, 0.3));
    stroke-width: 3;
}

.arch-text {
    font-family: 'Caveat', cursive;
    font-size: 1.1rem;
    font-weight: 700;
}

.arch-subtext {
    font-size: 0.85rem;
    opacity: 0.8;
    fill: var(--chalk-secondary);
}

.diagram-label {
    font-family: 'Caveat', cursive;
    font-size: 1.3rem;
    font-weight: 700;
    fill: var(--chalk-primary);
}

.architecture-description {
    text-align: center;
    font-size: 1rem;
    color: var(--text-primary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================================================
   AI SECTION
   ============================================================================ */

.ai-content {
    max-width: 900px;
    margin: 0 auto;
}

.ai-intro {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xxl);
    color: var(--text-primary);
}

.ai-topics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.ai-topic {
    padding: var(--spacing-lg);
    background: rgba(21, 25, 23, 0.3);
    border: 1px solid var(--chalk-muted);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-medium) var(--transition-easing);
}

.ai-topic:hover {
    border-color: var(--chalk-primary);
    background: rgba(21, 25, 23, 0.6);
    box-shadow: 0 4px 12px rgba(242, 240, 230, 0.1);
}

.ai-topic h3 {
    font-size: 1.2rem;
    color: var(--chalk-primary);
    margin-bottom: var(--spacing-sm);
}

.ai-topic p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ============================================================================
   EDUCATION SECTION
   ============================================================================ */

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.education-item {
    padding: var(--spacing-lg);
    background: rgba(21, 25, 23, 0.3);
    border: 1px solid var(--chalk-primary);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-medium) var(--transition-easing);
}

.education-item:hover {
    background: rgba(21, 25, 23, 0.6);
    box-shadow: 0 4px 12px rgba(242, 240, 230, 0.1);
}

.education-item h3 {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-xs);
    color: var(--chalk-primary);
}

.education-issuer {
    font-size: 0.95rem;
    color: var(--chalk-secondary);
    margin-bottom: var(--spacing-xs);
}

.education-date {
    font-size: 0.85rem;
    color: var(--chalk-muted);
}

/* ============================================================================
   CONTACT SECTION
   ============================================================================ */

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-description {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.contact-methods {
    margin-bottom: var(--spacing-xl);
}

.contact-links {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--chalk-secondary);
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast) var(--transition-easing);
}

.contact-link:hover {
    color: var(--chalk-primary);
    border-bottom-color: var(--chalk-primary);
}

/* ============================================================================
   FLOATING EMAIL + CONTACT MODAL
   ============================================================================ */

.floating-contact-stack {
    position: fixed;
    right: 20px;
    top: 42%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 1200;
}

.floating-email-btn {
    width: 56px;
    height: 56px;
    border: 2px solid var(--chalk-primary);
    border-radius: 50%;
    background: rgba(17, 20, 18, 0.92);
    color: var(--chalk-primary);
    font-size: 1.45rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
    transition: transform var(--transition-fast) var(--transition-easing), box-shadow var(--transition-fast) var(--transition-easing), border-color var(--transition-fast) var(--transition-easing);
}

.floating-email-btn:hover,
.floating-email-btn:focus-visible {
    transform: translateY(-3px);
    border-color: var(--chalk-accent);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.45);
    outline: none;
}

.floating-social-link {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border: 2px solid rgba(242, 240, 230, 0.35);
    border-radius: 50%;
    background: rgba(17, 20, 18, 0.9);
    color: var(--chalk-secondary);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    line-height: 1;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
    transition: all var(--transition-fast) var(--transition-easing);
}

.floating-social-link:hover,
.floating-social-link:focus-visible {
    border-color: var(--chalk-primary);
    color: var(--chalk-primary);
    transform: translateY(-2px);
    outline: none;
}

.floating-social-link span {
    transform: translateY(1px);
}

.floating-social-link svg {
    width: 22px;
    height: 22px;
}

.contact-modal {
    position: fixed;
    inset: 0;
    display: none;
    z-index: 1300;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    padding: max(0.75rem, env(safe-area-inset-top)) 0 max(0.75rem, env(safe-area-inset-bottom));
}

.contact-modal.active {
    display: block;
}

.contact-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(6, 8, 7, 0.72);
    backdrop-filter: blur(4px);
}

.contact-modal-panel {
    position: relative;
    width: min(640px, calc(100% - 2rem));
    margin: 6vh auto;
    background: linear-gradient(160deg, rgba(22, 26, 24, 0.98), rgba(16, 19, 17, 0.98));
    border: 1px solid rgba(242, 240, 230, 0.25);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
    max-height: calc(100dvh - 12vh);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1;
}

.contact-modal-close {
    position: absolute;
    top: 10px;
    right: 12px;
    border: none;
    background: transparent;
    color: var(--chalk-primary);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
}

.contact-modal .chalk-title {
    font-size: 2.1rem;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
    text-align: left;
}

.contact-modal-subtitle {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.contact-email-form {
    display: grid;
    gap: var(--spacing-sm);
}

.contact-email-form label {
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    color: var(--chalk-secondary);
}

.contact-email-form input,
.contact-email-form textarea {
    width: 100%;
    border: 1px solid rgba(242, 240, 230, 0.35);
    background: rgba(9, 11, 10, 0.58);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 0.85rem;
    font: inherit;
}

.contact-email-form input:focus,
.contact-email-form textarea:focus {
    outline: 2px solid rgba(242, 240, 230, 0.55);
    border-color: var(--chalk-primary);
}

.contact-form-note {
    margin-top: 4px;
    margin-bottom: 0;
    color: var(--chalk-muted);
    font-size: 0.85rem;
}

.contact-form-status {
    min-height: 1.4rem;
    margin: 0;
    color: var(--chalk-accent);
    font-size: 0.9rem;
}

.honeypot-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.contact-toast {
    position: fixed;
    left: 50%;
    bottom: 24px;
    transform: translate(-50%, 20px);
    padding: 0.75rem 1rem;
    border: 1px solid rgba(242, 240, 230, 0.35);
    border-radius: var(--border-radius-md);
    background: rgba(17, 20, 18, 0.95);
    color: var(--chalk-primary);
    font-size: 0.9rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.4);
    opacity: 0;
    pointer-events: none;
    z-index: 1400;
    transition: opacity 220ms ease, transform 220ms ease;
}

.contact-toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

.contact-toast.error {
    border-color: rgba(242, 170, 170, 0.7);
    color: #ffd7d7;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: rgba(17, 20, 18, 0.8);
    border-top: 1px solid rgba(242, 240, 230, 0.1);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    color: var(--chalk-muted);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-text {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 1px;
}

.footer-credit {
    font-size: 0.9rem;
    font-family: 'Caveat', cursive;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 2px;
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--board-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--chalk-muted);
    border-radius: 5px;
    transition: background var(--transition-fast) var(--transition-easing);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--chalk-primary);
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ============================================================================
   ACCESSIBILITY
   ============================================================================ */

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

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--chalk-accent);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--chalk-primary);
    color: var(--board-bg-primary);
    padding: var(--spacing-sm);
    z-index: 100;
}

.skip-to-main:focus {
    top: 0;
}