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

:root {
    --primary-red: #CA0404;
    --text-black: #1a1a1a;
    --white: #ffffff;
    --light-gray: #f8f8f8;
    --mid-gray: #666;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-black);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-black);
}

.logo-image {
    height: 40px;
    width: auto;
}

.logo-text {
    display: flex;
    align-items: center;
}

.logo-accent {
    color: var(--primary-red);
}

/* Hamburger menu */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-black);
    transition: all 0.3s ease;
    border-radius: 2px;
}

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

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

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

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: var(--text-black);
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 15px;
}

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

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 80px 0;
    background-color: var(--white);
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
    max-width: 1200px;
}

.hero-image {
    flex: 0 0 300px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.hero-image img:hover {
    filter: grayscale(0%);
}

.hero-text {
    flex: 1;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-black);
    line-height: 1.2;
}

.hero .intro {
    font-size: 20px;
    color: var(--text-black);
    margin-bottom: 25px;
    line-height: 1.7;
}

.hero .intro strong {
    font-weight: 600;
}

.hero .description {
    font-size: 18px;
    color: var(--mid-gray);
    margin-bottom: 25px;
    line-height: 1.8;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    background-color: var(--primary-red);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-red);
    font-size: 16px;
}

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

/* Section Styles */
section {
    padding: 80px 0;
}

section:nth-child(even) {
    background-color: var(--light-gray);
}

h2 {
    font-size: 38px;
    margin-bottom: 15px;
    color: var(--text-black);
    font-weight: 700;
}

h3 {
    font-size: 26px;
    margin-bottom: 20px;
    color: var(--text-black);
    font-weight: 600;
}

h4 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-black);
    font-weight: 600;
}

.section-intro {
    font-size: 18px;
    color: var(--mid-gray);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 900px;
}

/* About Section */
.about-content {
    max-width: 900px;
}

.about-content p {
    font-size: 18px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.about-content a {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.about-content a:hover {
    opacity: 0.8;
}

.values-list {
    list-style: none;
    margin: 30px 0;
}

.values-list li {
    font-size: 17px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.values-list li::before {
    content: "—";
    color: var(--primary-red);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.values-list strong {
    color: var(--text-black);
    font-weight: 600;
}

.highlight {
    color: var(--primary-red);
    font-weight: 600;
}

/* Experience Section */
.experience-content {
    max-width: 900px;
}

.experience-content h3 {
    margin-top: 40px;
    margin-bottom: 20px;
}

.experience-content h3:first-child {
    margin-top: 0;
}

.experience-content p {
    font-size: 18px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.experience-content h4 {
    margin-top: 25px;
    margin-bottom: 15px;
}

.experience-content ul {
    list-style: none;
    margin: 20px 0;
}

.experience-content ul li {
    font-size: 17px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
}

.experience-content ul li::before {
    content: "•";
    color: var(--primary-red);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 20px;
}

/* Focus Areas Grid */
.focus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 35px;
    margin-top: 50px;
    max-width: 1100px;
}

.focus-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 6px;
    border-left: 4px solid var(--primary-red);
}

.focus-card h4 {
    margin-bottom: 12px;
    font-size: 20px;
}

.focus-card p {
    color: var(--mid-gray);
    line-height: 1.7;
    font-size: 16px;
}

/* Writing Section */
.writing-content {
    max-width: 900px;
}

.writing-content p {
    font-size: 18px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.writing-content h4 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.writing-content ul {
    list-style: none;
    margin: 20px 0 30px 0;
}

.writing-content ul li {
    font-size: 17px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.writing-content ul li::before {
    content: "—";
    color: var(--primary-red);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.writing-content a {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.writing-content a:hover {
    opacity: 0.8;
}

/* Speaking Section */
.speaking-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 40px 0;
    max-width: 600px;
}

.speaking-images img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.speaking-content {
    max-width: 900px;
}

.speaking-content p {
    font-size: 18px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 25px;
}

.speaking-content h4 {
    margin-top: 30px;
    margin-bottom: 15px;
}

.speaking-content ul {
    list-style: none;
    margin: 20px 0 30px 0;
}

.speaking-content ul li {
    font-size: 17px;
    color: var(--mid-gray);
    line-height: 1.8;
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.speaking-content ul li::before {
    content: "—";
    color: var(--primary-red);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.speaking-content a {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.speaking-content a:hover {
    opacity: 0.8;
}

/* Contact Section */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 20px;
    color: var(--mid-gray);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-intro strong {
    color: var(--text-black);
    font-weight: 600;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 17px;
}

.contact-item .icon {
    font-size: 18px;
}

.contact-item a {
    color: var(--text-black);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Footer */
footer {
    background-color: var(--text-black);
    color: var(--white);
    text-align: center;
    padding: 30px 0;
}

footer p {
    color: #999;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    nav ul {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        background-color: var(--white);
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        transition: right 0.3s ease;
        height: calc(100vh - 70px);
        z-index: 999;
    }

    nav ul.active {
        right: 0;
    }

    nav ul li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }

    nav ul li a {
        display: block;
        padding: 15px 30px;
        font-size: 16px;
    }

    .logo {
        font-size: 18px;
    }

    .logo-image {
        height: 32px;
    }

    .hero-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }

    .hero-image {
        flex: 0 0 auto;
        max-width: 250px;
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero .intro {
        font-size: 18px;
    }

    .hero .description {
        font-size: 16px;
    }

    .speaking-images {
        max-width: 100%;
    }

    h2 {
        font-size: 28px;
    }

    h3 {
        font-size: 22px;
    }

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

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}