/* 
 * Main Stylesheet for Tim Moore's Personal Website
 * Apple-inspired design system
 */

/* CSS Reset & Base Styles */
:root {
    /* Color Variables */
    --color-background: #ffffff;
    --color-text: #1d1d1f;
    --color-text-secondary: #86868b;
    --color-primary: #0071e3;
    --color-primary-hover: #0077ed;
    --color-secondary: #f5f5f7;
    --color-border: #d2d2d7;
    --color-success: #28cd41;
    --color-error: #ff3b30;
    
    /* Typography */
    --font-primary: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-md);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(210, 210, 215, 0.5);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    padding: 0 var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.logo a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-links a:hover {
    color: var(--color-primary);
    background-color: rgba(0, 113, 227, 0.05);
}

.nav-links a.active {
    color: var(--color-primary);
}

/* Dropdown menu */
.has-dropdown {
    position: relative;
}

.has-dropdown > a::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-left: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    opacity: 0.6;
    transition: transform var(--transition-fast);
}

.has-dropdown:hover > a::after,
.has-dropdown:focus-within > a::after {
    transform: translateY(0) rotate(225deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    min-width: 200px;
    margin-top: 8px;
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    list-style: none;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-menu a:hover {
    background-color: rgba(0, 113, 227, 0.08);
    color: var(--color-primary);
}

.dropdown-menu a.active {
    color: var(--color-primary);
    background-color: rgba(0, 113, 227, 0.06);
}

.login-btn {
    background-color: var(--color-primary);
    color: white !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

.login-btn:hover {
    background-color: var(--color-primary-hover) !important;
    color: white !important;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(64px + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg);
    background: linear-gradient(to bottom, #f5f5f7 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-content {
    text-align: left;
    max-width: 560px;
}

.eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.1s backwards;
    background: linear-gradient(180deg, #1d1d1f 0%, #3a3a3c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .subtitle {
    animation: fadeInUp 1s ease-out 0.2s forwards;
    opacity: 0;
}

.hero .description {
    animation: fadeInUp 1s ease-out 0.3s forwards;
    opacity: 0;
    color: var(--color-text-secondary);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 1.2s ease-out 0.4s backwards;
}

.hero-art {
    width: 100%;
    max-width: 520px;
    height: auto;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.08));
}

.hero-art .float {
    transform-origin: center;
    animation: floaty 6s ease-in-out infinite;
}

.hero-art .float-a { animation-delay: 0s; }
.hero-art .float-b { animation-delay: -1.5s; }
.hero-art .float-c { animation-delay: -3s; }
.hero-art .float-d { animation-delay: -4.5s; }

@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Pillars Section */
.pillars {
    padding: var(--spacing-xl) 0 var(--spacing-xxl);
    background-color: white;
    border-top: 1px solid rgba(210, 210, 215, 0.5);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto var(--spacing-lg);
}

.pillar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
}

.pillar-card {
    display: block;
    background-color: white;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium), border-color var(--transition-medium);
}

.pillar-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0, 113, 227, 0.4);
    color: var(--color-text);
}

.pillar-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--spacing-md);
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

.pillar-arrow .arrow {
    transition: transform var(--transition-fast);
    display: inline-block;
}

.pillar-card:hover .pillar-arrow .arrow {
    transform: translateX(4px);
}

/* Pillar Detail Pages */
.pillar-hero {
    padding: calc(64px + var(--spacing-xl)) var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(to bottom, #f5f5f7 0%, #ffffff 100%);
}

.pillar-hero .container {
    max-width: 900px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast), gap var(--transition-fast);
}

.back-link:hover {
    color: var(--color-primary);
    gap: 10px;
}

.pillar-hero-content {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.pillar-hero-content .pillar-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    margin: 0 auto var(--spacing-lg);
}

.pillar-hero-content .pillar-icon svg {
    width: 36px;
    height: 36px;
}

.pillar-hero-content .eyebrow {
    margin-bottom: var(--spacing-sm);
}

.pillar-hero-content h1 {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(180deg, #1d1d1f 0%, #3a3a3c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pillar-hero-content .lead {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

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

.detail-section + .detail-section {
    border-top: 1px solid rgba(210, 210, 215, 0.5);
}

.detail-section:last-of-type {
    padding-bottom: var(--spacing-xxl);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.04), rgba(90, 200, 250, 0.06));
    border: 1px solid var(--color-border);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

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

.detail-card {
    background: white;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-medium), border-color var(--transition-medium);
}

.detail-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(0, 113, 227, 0.3);
}

.detail-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.15rem;
    font-weight: 600;
}

.detail-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.placeholder-note {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    background: var(--color-secondary);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-sm);
}

.tag-note {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(0, 113, 227, 0.08);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-sm);
}

/* Contact page */
.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.contact-form {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.contact-form .form-field {
    margin-bottom: var(--spacing-md);
}

.contact-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: white;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

.contact-form textarea {
    resize: vertical;
    min-height: 140px;
    font-family: var(--font-primary);
}

.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
}

#send-btn {
    margin-top: var(--spacing-xs);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
    font-size: 1rem;
}

#send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-status {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    display: none;
}

.form-status:not(:empty) {
    display: block;
}

.form-status.form-status-success {
    background: rgba(40, 205, 65, 0.08);
    color: #1d8a32;
    border: 1px solid rgba(40, 205, 65, 0.3);
}

.form-status.form-status-error {
    background: rgba(255, 59, 48, 0.08);
    color: #c1271e;
    border: 1px solid rgba(255, 59, 48, 0.3);
}

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

.aside-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: white;
}

.aside-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.aside-card p {
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    margin-bottom: 0;
}

.aside-card a {
    word-break: break-all;
}

.reveal-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background: var(--color-secondary);
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.reveal-btn:hover {
    background: white;
    border-color: rgba(0, 113, 227, 0.4);
    color: var(--color-primary);
}

.revealed-email {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    background: rgba(0, 113, 227, 0.08);
    font-weight: 500;
    color: var(--color-primary);
    word-break: break-all;
}

/* Home contact CTA */
.contact-cta {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
    border-top: 1px solid rgba(210, 210, 215, 0.5);
}

.contact-cta h2 {
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(180deg, #1d1d1f 0%, #3a3a3c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-cta p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    max-width: 540px;
    margin: 0 auto var(--spacing-md);
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .contact-form .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: var(--spacing-lg);
    }
}

/* Career timeline */
.career-timeline {
    margin-top: var(--spacing-lg);
    position: relative;
}

.timeline-entry {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0 var(--spacing-lg) var(--spacing-lg);
    border-left: 2px solid var(--color-border);
    margin-left: var(--spacing-sm);
    position: relative;
}

.timeline-entry:last-child {
    padding-bottom: var(--spacing-md);
}

.timeline-entry::before {
    content: '';
    position: absolute;
    left: -8px;
    top: var(--spacing-lg);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid white;
    box-shadow: 0 0 0 1px var(--color-border);
}

.timeline-entry.current::before {
    background: var(--color-success);
    box-shadow: 0 0 0 1px var(--color-border), 0 0 0 6px rgba(40, 205, 65, 0.15);
}

.timeline-meta .company {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2px;
}

.timeline-meta .years {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.timeline-content h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
}

.timeline-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.timeline-content ul {
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    list-style: disc;
    padding-left: 1.2rem;
}

.timeline-content ul li {
    margin-bottom: 4px;
}

/* Horizontal bar chart */
.bar-chart {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.bar-row {
    display: grid;
    grid-template-columns: 220px 1fr 80px;
    gap: var(--spacing-md);
    align-items: center;
}

.bar-label {
    font-weight: 500;
    font-size: 0.92rem;
    color: var(--color-text);
}

.bar-track {
    background: var(--color-secondary);
    border-radius: var(--radius-full);
    height: 10px;
    overflow: hidden;
    position: relative;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #5ac8fa);
    border-radius: var(--radius-full);
}

.bar-value {
    text-align: right;
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.92rem;
}

/* Tool stack grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.tool-pill {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: white;
    transition: all var(--transition-medium);
}

.tool-pill:hover {
    border-color: rgba(0, 113, 227, 0.4);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.tool-pill .tool-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #5ac8fa);
    flex-shrink: 0;
}

.tool-pill .tool-name {
    font-weight: 500;
    font-size: 0.95rem;
}

.tool-pill .tool-meta {
    color: var(--color-text-secondary);
    font-size: 0.78rem;
    margin-left: auto;
}

/* Callout / quote */
.callout {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.06), rgba(90, 200, 250, 0.06));
    border: 1px solid var(--color-border);
}

.callout p {
    font-size: 1.2rem;
    color: var(--color-text);
    margin: 0;
    font-weight: 500;
    line-height: 1.5;
}

.callout .source {
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
}

/* Chart container */
.chart-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.chart-container svg {
    width: 100%;
    height: auto;
    display: block;
}

.chart-caption {
    margin-top: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-align: center;
}

/* Feature stat (big number) */
.feature-stat {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.05), rgba(90, 200, 250, 0.08));
    border: 1px solid var(--color-border);
    margin-top: var(--spacing-lg);
}

.feature-stat .nums {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.feature-stat .num {
    font-size: 4.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1;
    background: linear-gradient(135deg, var(--color-primary), #5ac8fa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-stat .num-arrow {
    color: var(--color-text-secondary);
    font-size: 2.25rem;
    font-weight: 300;
}

.feature-stat .caption {
    color: var(--color-text-secondary);
    font-size: 1rem;
    max-width: 460px;
    margin: 0 auto;
}

/* Patent cards */
.patent-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: white;
    transition: box-shadow var(--transition-medium), border-color var(--transition-medium);
}

.patent-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: rgba(0, 113, 227, 0.3);
}

.patent-card .patent-num {
    font-family: "SF Mono", Monaco, Consolas, monospace;
    font-size: 0.8rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    letter-spacing: 0.05em;
}

.patent-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.05rem;
    line-height: 1.35;
}

.patent-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.patent-card .patent-meta {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    display: flex;
    justify-content: space-between;
    font-weight: 500;
}

@media (max-width: 768px) {
    .timeline-entry {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .bar-row {
        grid-template-columns: 1fr 60px;
    }

    .bar-row .bar-label {
        grid-column: 1 / -1;
        margin-bottom: 4px;
    }

    .bar-row .bar-track {
        grid-column: 1;
    }

    .feature-stat .num {
        font-size: 3rem;
    }

    .feature-stat .num-arrow {
        font-size: 1.5rem;
    }
}

.pillar-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.12), rgba(90, 200, 250, 0.12));
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.pillar-card h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 600;
}

.pillar-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.cta-button {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    margin-top: var(--spacing-md);
    animation: fadeInUp 1s ease-out 0.4s forwards;
    opacity: 0;
}

.cta-button:hover {
    background-color: var(--color-primary-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-button.secondary {
    background-color: var(--color-secondary);
    color: var(--color-text);
}

.cta-button.secondary:hover {
    background-color: #e8e8ed;
    color: var(--color-text);
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
    background-color: white;
}

.about-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 100%;
    max-width: 400px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium);
}

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

.text-link {
    display: inline-block;
    font-weight: 500;
    margin-top: var(--spacing-md);
}

/* Skills Section */
.skills {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-secondary);
}

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

.skill-card {
    background-color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.skill-card h3 {
    margin-bottom: var(--spacing-sm);
}

/* CTA Section */
.cta {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background-color: white;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* Footer */
footer {
    background-color: var(--color-secondary);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.footer-logo a {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.footer-links ul {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-primary);
}

.copyright {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-medium);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Responsive Styles */

/* Tablet & smaller laptops */
@media (max-width: 1024px) {
    h1 {
        font-size: 3rem;
    }

    .hero {
        padding: calc(64px + var(--spacing-md)) var(--spacing-lg) var(--spacing-xl);
    }

    .hero-inner {
        gap: var(--spacing-lg);
    }

    .hero-art {
        max-width: 440px;
    }

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

    .pillar-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile / portrait tablet */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        z-index: 999;
        box-shadow: var(--shadow-md);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        text-align: center;
    }

    .login-btn {
        width: auto !important;
    }

    .has-dropdown > a::after {
        display: none;
    }

    .dropdown-menu {
        position: static;
        transform: none;
        margin-top: var(--spacing-xs);
        padding: 0;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        box-shadow: none;
        opacity: 1;
        pointer-events: auto;
        min-width: 0;
        width: 100%;
    }

    .dropdown-menu a {
        text-align: center;
        font-size: 0.92rem;
        color: var(--color-text-secondary);
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .dropdown-menu a.active {
        background-color: transparent;
    }

    .about-content {
        flex-direction: column-reverse;
    }

    .hero {
        padding: calc(64px + var(--spacing-md)) var(--spacing-md) var(--spacing-lg);
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .hero-content {
        text-align: center;
        margin: 0 auto;
    }

    .hero-art {
        max-width: 360px;
    }

    .pillars {
        padding: var(--spacing-lg) 0 var(--spacing-xl);
    }

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

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-links ul {
        justify-content: center;
    }

    .footer-social {
        justify-content: center;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    .hero {
        padding: calc(64px + var(--spacing-sm)) var(--spacing-md) var(--spacing-md);
    }

    .hero-art {
        max-width: 280px;
    }

    .eyebrow {
        font-size: 0.7rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

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

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

    .pillar-card {
        padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
}