/* Theme Variables */
:root {
    --primary-color: #ff6b00;
    --secondary-color: #2a2a2a;
    --text-color: #333;
    --background-color: #f5f5f5;
    --card-background: white;
    --nav-background: rgba(255, 255, 255, 0.95);
    --hero-gradient: linear-gradient(135deg, #1a1a1a 0%, #4a4a4a 100%);
}

[data-theme="dark"] {
    --text-color: #e0e0e0;
    --background-color: #121212;
    --card-background: #1e1e1e;
    --nav-background: rgba(18, 18, 18, 0.95);
    --hero-gradient: linear-gradient(135deg, #000000 0%, #2a2a2a 100%);
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    background-color: var(--background-color);
    color: var(--text-color);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Navigation */
nav {
    position: fixed;
    top: 2rem;
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--nav-background);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

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

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.theme-toggle:hover {
    color: var(--primary-color);
}

/* Banner */
.site-banner {
    background: var(--background-color);
    padding: 0.5rem 2rem;
    border-bottom: 1px solid var(--primary-color);
    width: 100%;
    position: fixed;
    top: 0;
    z-index: 1001;
}

.site-banner p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-color);
}

.verification-link {
    color: var(--primary-color);
    cursor: pointer;
    position: relative;
    margin-left: 0.5rem;
}

.verification-link .tooltip {
    display: none;
    position: absolute;
    background: var(--card-background);
    padding: 0.5rem;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    width: 200px;
    top: 100%;
    left: 0;
    z-index: 1002;
}

.verification-link:hover .tooltip {
    display: block;
}

/* Main Content */
main {
    padding-top: 120px;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    background: var(--hero-gradient);
    color: white;
    transition: background 0.3s ease;
}

/* Cards */
.info-card {
    background: var(--card-background);
    padding: 2.5rem;
    border-radius: 15px;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

/* Portfolio Page */
.portfolio-page {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.portfolio-item {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.portfolio-item:hover {
    transform: scale(1.05);
}

/* Careers Page */
.careers-page {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.careers-title {
    color: var(--primary-color);
    font-size: 4rem;
    margin-bottom: 1rem;
}

.careers-notice {
    background: var(--primary-color);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
    text-align: center;
}

.careers-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.career-item {
    background: var(--card-background);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

/* Education Page */
.education-page {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.education-intro {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 4rem;
    padding: 2.5rem;
    background: var(--card-background);
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.education-section {
    margin: 5rem 0;
}

.education-section h2 {
    color: var(--primary-color);
    font-size: 2.2rem;
    margin-bottom: 2.5rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.8rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .careers-title {
        font-size: 2.5rem;
    }
    
    .education-page {
        padding: 2rem 1rem;
    }
}