/* --- Variables & Reset --- */
:root {
    --color-primary: #0f172a;
    /* Navy Slate */
    --color-secondary: #0ea5e9;
    /* Sky Blue Highlight */
    --color-accent: #d4af37;
    /* Gold/Bronze */
    --color-text: #334155;
    /* Slate 700 */
    --color-text-light: #64748b;
    /* Slate 500 */
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    /* Slate 50 */
    --color-white: #ffffff;
    --color-border: #e2e8f0;

    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

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

ul {
    list-style: none;
}

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

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

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

.alt-bg {
    background-color: var(--color-bg-alt);
}

.mt-large {
    margin-top: var(--spacing-lg);
}

.text-center {
    text-align: center;
}

/* --- Components --- */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: var(--transition);
    border: 2px solid transparent;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.big-btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.section-line {
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
    margin: 0 auto;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.dot {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-accent);
    transition: var(--transition);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-primary);
}

.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transform: translateY(-150%);
    transition: var(--transition);
    z-index: 999;
    text-align: center;
}

.mobile-menu.active {
    transform: translateY(0);
}

.mobile-nav-links li {
    margin-bottom: var(--spacing-sm);
}

/* --- Hero --- */
.hero {
    padding-top: 140px;
    /* Nav height + spacing */
    padding-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, rgba(15, 23, 42, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: var(--spacing-lg);
}

.eyebrow {
    font-family: var(--font-sans);
    color: var(--color-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-xs);
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--color-text-light);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 540px;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.visual-circle {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--color-primary), var(--color-secondary));
    opacity: 0.1;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    animation: pulse 4s infinite ease-in-out;
}

.hero-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    z-index: 1;
    border: 4px solid var(--color-white);
    box-shadow: var(--shadow-hover);
    position: relative;
}

/* --- Stats --- */
.stats {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 0;
}

.stat-item h3.stat-long-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 0;
    max-width: 100%;
}



/* --- About --- */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
}

/* --- Experience Timeline --- */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

/* Central line */
.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--color-border);
    top: 0;
    bottom: 0;
    left: 31px;
    /* Aligned to left */
    margin-left: 0;
}

.timeline-item {
    padding: 10px 40px;
    padding-left: 80px;
    /* Space for line */
    position: relative;
    background-color: inherit;
    width: 100%;
    /* Full width */
    box-sizing: border-box;
    opacity: 0;
    /* Hidden initially for animation */
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    left: 22px;
    /* Aligned to left line */
    background-color: var(--color-white);
    border: 4px solid var(--color-accent);
    top: 15px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-content {
    padding: 20px 30px;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    border-top: 4px solid var(--color-primary);
}

.timeline-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.exp-role {
    font-size: 1.25rem;
    color: var(--color-primary);
    font-weight: 700;
}

.exp-company {
    font-size: 1rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: 5px;
}

.exp-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 10px;
    display: inline-block;
    background: var(--color-bg-alt);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.exp-desc {
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.exp-points li {
    font-size: 0.9rem;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
    text-align: left;
    /* Always left align list text */
}

.exp-points li::before {
    content: '•';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
}

/* --- Skills --- */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    max-width: 900px;
    margin: 0 auto;
}

.skill-tag {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    cursor: default;
}

.skill-tag:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

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

.edu-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-accent);
    transition: var(--transition);
}

.edu-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.edu-degree {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.edu-school {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* --- Contact & Footer --- */
.contact-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    margin-left: var(--spacing-md);
}

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

/* --- Animations --- */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

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

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.95);
        opacity: 0.1;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.05);
        opacity: 0.2;
    }

    100% {
        transform: translate(-50%, -50%) scale(0.95);
        opacity: 0.1;
    }
}

/* --- Media Queries --- */
@media (max-width: 900px) {
    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        padding-left: 70px;
        padding-right: 25px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .visual-circle {
        display: none;
    }

    .footer-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer-links a {
        margin: 0 var(--spacing-xs);
    }
}