/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - Clean professional palette */
    --color-primary: #065F46;
    --color-primary-dark: #064e3b;
    --color-accent: #10B981;
    --color-dark: #1F2937;
    --color-text: #1F2937;
    --color-text-light: #6B7280;
    --color-bg: #FFFFFF;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-white: #FFFFFF;
    
    /* Typography */
    --font-display: 'Crimson Pro', serif;
    --font-serif: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;

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

    /* Line Heights */
    --leading-tight: 1.2;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 1.75;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;
    --border-radius: 4px;
    --radius-sm: 4px;
    --radius-lg: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOBAL RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
    font-weight: 700;
}

p {
    margin-bottom: var(--spacing-sm);
    line-height: var(--leading-relaxed);
}

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

/* ===== NAVIGATION ===== */
.main-nav {
    position: sticky;
    top: 0;
    background: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

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

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-light);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-smooth);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--color-primary);
    font-weight: 700;
}

.nav-links a.active::after {
    width: 100%;
    background: var(--color-primary);
}

/* ===== BUTTONS ===== */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 81, 30, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ===== HOME PAGE ===== */
.home-main {
    animation: fadeIn 0.8s ease;
}

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

/* Hero Section */
.hero {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.hero-content {
    text-align: center;
    max-width: 800px;
}

.hero-avatar {
    margin: 0 auto var(--spacing-md);
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--color-primary);
    animation: slideUp 0.6s ease 0.1s backwards;
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-name {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    line-height: var(--leading-tight);
    animation: slideUp 0.6s ease 0.2s backwards;
}

.hero-visual {
    display: none;
}

.hero-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    animation: slideUp 0.6s ease 0.3s backwards;
}

.hero-social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-md);
    animation: slideUp 0.6s ease 0.4s backwards;
}

.hero-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    color: var(--color-text);
    transition: all var(--transition-smooth);
    border: 2px solid transparent;
}

.hero-social-links a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(6, 95, 70, 0.3);
}

.hero-social-links svg {
    width: 20px;
    height: 20px;
}

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

.hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-md);
    animation: slideUp 0.6s ease 0.4s backwards;
}

.highlight {
    color: var(--color-primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    width: 100%;
    height: 0.15em;
    background: var(--color-accent);
    opacity: 0.3;
    z-index: -1;
}

.hero-description {
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--color-text-light);
    margin: 0 auto;
    max-width: 700px;
    animation: slideUp 0.6s ease 0.5s backwards;
}


/* Experience Section */
.experience {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.section-title {
    margin-bottom: var(--spacing-lg);
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-md);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }

.timeline-marker {
    position: absolute;
    left: -29px;
    top: 8px;
    width: 14px;
    height: 14px;
    background: var(--color-primary);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
}

.timeline-content {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition-smooth);
}

.timeline-content:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateX(4px);
}

.timeline-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.timeline-period {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
}

.timeline-type {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.timeline-role {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.timeline-company {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.timeline-highlights {
    margin: var(--spacing-sm) 0;
    padding-left: 1.25rem;
}

.timeline-highlights li {
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-radius: 20px;
}

/* Skills Overview */
.skills-overview {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-bg-alt);
}

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

.skill-category {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-smooth);
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.skill-category:nth-child(1) { animation-delay: 0.1s; }
.skill-category:nth-child(2) { animation-delay: 0.2s; }
.skill-category:nth-child(3) { animation-delay: 0.3s; }
.skill-category:nth-child(4) { animation-delay: 0.4s; }
.skill-category:nth-child(5) { animation-delay: 0.5s; }
.skill-category:nth-child(6) { animation-delay: 0.6s; }

.skill-category:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.skill-category h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.skill-category p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin: 0;
}

/* ===== PAGE HERO ===== */
.page-hero {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
    text-align: center;
    animation: fadeIn 0.8s ease;
}

.page-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

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

.page-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== ABOUT PAGE ===== */
.about-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.about-story h2 {
    margin-bottom: var(--spacing-md);
}

.story-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

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

.sidebar-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.fact-list {
    list-style: none;
}

.fact-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.fact-list li:last-child {
    border-bottom: none;
}

.fact-label {
    font-weight: 600;
    color: var(--color-text);
}

.fact-value {
    color: var(--color-text-light);
}

.interests-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.interest-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--color-bg-alt);
    border-radius: 20px;
}

.learning-list {
    list-style: none;
}

.learning-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.learning-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* Philosophy Section */
.philosophy {
    background: var(--color-bg-alt);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.philosophy-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

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

.principle {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-smooth);
}

.principle:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.principle-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.5;
    margin-bottom: var(--spacing-xs);
}

.principle h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.principle p {
    color: var(--color-text-light);
    margin: 0;
}

/* CTA Section */
.cta-section {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.cta-content {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--spacing-xl);
    border-radius: 8px;
    text-align: center;
    color: var(--color-white);
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

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

.cta-content .btn-primary:hover {
    background: var(--color-bg);
}

/* ===== PROJECTS PAGE ===== */
.projects-grid-section {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.project-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-smooth);
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }
.project-card:nth-child(4) { animation-delay: 0.4s; }
.project-card:nth-child(5) { animation-delay: 0.5s; }
.project-card:nth-child(6) { animation-delay: 0.6s; }
.project-card:nth-child(7) { animation-delay: 0.7s; }
.project-card:nth-child(8) { animation-delay: 0.8s; }

.project-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.project-card.featured {
    border-width: 2px;
    border-color: var(--color-primary);
}

.project-header {
    margin-bottom: var(--spacing-sm);
}

.project-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.project-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-live {
    background: #d4edda;
    color: #155724;
}

.status-completed {
    background: #d1ecf1;
    color: #0c5460;
}

.status-archived {
    background: #f8d7da;
    color: #721c24;
}

.project-year {
    font-size: 0.875rem;
    color: var(--color-text-light);
    align-self: center;
}

.project-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.project-description {
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.project-highlights {
    margin: var(--spacing-sm) 0;
}

.project-highlights h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.project-highlights ul {
    padding-left: 1.25rem;
}

.project-highlights li {
    margin-bottom: 0.5rem;
    color: var(--color-text-light);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: var(--spacing-sm);
}

.tech-tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-radius: 4px;
}

.projects-cta {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

/* ===== CERTIFICATIONS PAGE ===== */
.certifications-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.certs-intro {
    max-width: var(--container-narrow);
    margin: 0 auto var(--spacing-lg);
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.certs-grid {
    display: grid;
    gap: var(--spacing-md);
}

.cert-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
    transition: all var(--transition-smooth);
    opacity: 0;
    animation: slideUp 0.6s ease forwards;
}

.cert-card:nth-child(1) { animation-delay: 0.1s; }
.cert-card:nth-child(2) { animation-delay: 0.2s; }
.cert-card:nth-child(3) { animation-delay: 0.3s; }
.cert-card:nth-child(4) { animation-delay: 0.4s; }
.cert-card:nth-child(5) { animation-delay: 0.5s; }
.cert-card:nth-child(6) { animation-delay: 0.6s; }
.cert-card:nth-child(7) { animation-delay: 0.7s; }
.cert-card:nth-child(8) { animation-delay: 0.8s; }

.cert-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.cert-card.premium {
    border-width: 2px;
    border-color: var(--color-primary);
}

.cert-badge {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.badge-icon {
    font-size: 2.5rem;
}

.cert-title {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.cert-issuer {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.cert-details {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.cert-date,
.cert-validity {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.cert-description {
    margin-bottom: var(--spacing-sm);
}

.cert-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-pill {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--color-bg-alt);
    color: var(--color-text);
    border-radius: 20px;
}

/* Learning Section */
.learning-section {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-bg-alt);
}

.learning-content {
    max-width: var(--container-max);
    margin: 0 auto;
}

.learning-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.learning-header .section-label {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.learning-header .section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.learning-header .section-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.learning-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.learning-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--color-primary);
}

.learning-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.learning-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.learning-description {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.learning-status {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    background: rgba(6, 95, 70, 0.1);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    align-self: flex-start;
}

@media (max-width: 768px) {
    .learning-header .section-title {
        font-size: 2rem;
    }

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

.pursuing-grid {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.pursuing-item {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.pursuing-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.pursuing-item p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-alt);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: 4px;
    transition: width var(--transition-smooth);
}

.verification-section {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.verification-content {
    max-width: var(--container-narrow);
    margin: 0 auto;
    text-align: center;
}

.verification-content h2 {
    margin-bottom: var(--spacing-sm);
}

.verification-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* ===== FOOTER ===== */
.main-footer {
    background: var(--color-dark);
    color: var(--color-bg);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

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

.footer-links a {
    color: var(--color-bg);
    transition: color var(--transition-fast);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .nav-links a {
        font-size: var(--text-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .principles-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .cert-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cert-badge {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}

/* ===== UTILITY CLASSES ===== */
/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Font Weights */
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Text Sizes */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }

/* Line Heights */
.leading-tight { line-height: var(--leading-tight); }
.leading-snug { line-height: var(--leading-snug); }
.leading-normal { line-height: var(--leading-normal); }
.leading-relaxed { line-height: var(--leading-relaxed); }
.leading-loose { line-height: var(--leading-loose); }

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-dark { color: var(--color-dark); }
.text-light { color: var(--color-text-light); }