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

:root {
    --primary-blue: #2563eb;
    --primary-blue-light: #3b82f6;
    --primary-blue-dark: #1e40af;
    --accent-blue: #0ea5e9;
    --accent-slate: #475569;
    --warm-bg: #fefefe;
    --warm-bg-alt: #f8fafc;
    --warm-gray: #f1f5f9;
    --medium-gray: #e2e8f0;
    --dark-gray: #1e293b;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-lg: rgba(0, 0, 0, 0.12);
    --shadow-xl: rgba(37, 99, 235, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background: linear-gradient(to bottom, var(--warm-bg), var(--warm-bg-alt));
    min-height: 100vh;
}

header {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

header:hover {
    box-shadow: 0 4px 20px var(--shadow-lg);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.logo:hover {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-blue);
    transform: translateY(-2px);
}

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

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 5rem 2rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(14, 165, 233, 0.06));
    border-radius: 24px;
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-20px, -20px) rotate(180deg); }
}

.hero:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow-xl);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: fadeInUp 0.8s ease;
}

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

.tagline {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-icons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.icon-link {
    color: var(--primary-blue);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.1));
    position: relative;
    overflow: hidden;
}

.icon-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.icon-link svg {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.icon-link:hover {
    transform: translateY(-5px) scale(1.1);
    color: var(--white);
    box-shadow: 0 8px 20px var(--shadow-xl);
}

.icon-link:hover::before {
    width: 100%;
    height: 100%;
}

.icon-link:hover svg {
    transform: rotate(10deg);
}

.nav-chips {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.chip {
    padding: 0.75rem 1.75rem;
    border: 2px solid var(--primary-blue);
    background-color: var(--white);
    color: var(--primary-blue);
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.chip::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: -1;
}

.chip:hover {
    color: var(--white);
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 24px var(--shadow-xl);
    border-color: transparent;
}

.chip:hover::before {
    width: 300px;
    height: 300px;
}

.chip.active {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
    box-shadow: 0 6px 20px var(--shadow-xl);
    border-color: transparent;
}

.resume-section {
    margin-bottom: 4rem;
    padding: 2.5rem;
    background-color: var(--white);
    border-radius: 20px;
    box-shadow: 0 4px 16px var(--shadow);
    scroll-margin-top: 100px;
    transition: all 0.4s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.resume-section:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

.resume-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    border-bottom: 3px solid transparent;
    background-image: linear-gradient(90deg, var(--primary-blue), var(--accent-blue));
    background-size: 100% 3px;
    background-repeat: no-repeat;
    background-position: bottom;
    padding-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.resume-section p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.skill-card {
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(14, 165, 233, 0.08));
    border-radius: 16px;
    border-left: 4px solid var(--primary-blue);
    transition: all 0.4s ease;
    cursor: default;
}

.skill-card:hover {
    transform: translateY(-6px) translateX(4px);
    box-shadow: 0 8px 24px var(--shadow-xl);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.12));
    border-left-color: var(--accent-blue);
}

.skill-card h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.skill-card:hover h3 {
    color: var(--accent-blue);
}

.skill-card p {
    color: var(--text-dark);
    font-size: 1rem;
}

.highlight {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.1));
    padding: 1.25rem;
    border-radius: 12px;
    border-left: 4px solid var(--accent-blue);
    font-weight: 500;
    color: var(--text-dark) !important;
    margin-top: 1.5rem;
    transition: all 0.3s ease;
}

.highlight:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 16px var(--shadow);
}

.experience-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--warm-gray), rgba(37, 99, 235, 0.05));
    border-radius: 16px;
    transition: all 0.4s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.experience-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-xl);
    border-color: var(--primary-blue);
}

.experience-item h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.experience-item:hover h3 {
    color: var(--accent-blue);
}

.period {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.password-section {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.password-container {
    max-width: 400px;
    width: 100%;
    padding: 2.5rem;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-lg);
    text-align: center;
}

.password-container h2 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.subtitle {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: scale(1.02);
}

.form-group input {
    transition: all 0.3s ease;
}

.btn-primary {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 24px var(--shadow-xl);
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:active {
    transform: translateY(-2px) scale(0.98);
}

.error-message {
    color: #ef4444;
    margin-top: 1rem;
    font-size: 0.9rem;
    min-height: 1.5rem;
}

.mock-notice {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--light-gray);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.projects-content {
    max-width: 1000px;
    margin: 0 auto;
}

.projects-content h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.coming-soon {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

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

.project-card {
    padding: 2rem;
    background-color: var(--white);
    border-radius: 20px;
    box-shadow: 0 4px 16px var(--shadow);
    border-top: 4px solid var(--primary-blue);
    transition: all 0.4s ease;
    cursor: default;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px var(--shadow-xl);
    border-top-color: var(--accent-blue);
}

.project-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.project-card:hover h3 {
    color: var(--accent-blue);
}

.project-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.tech-tag {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.1));
    color: var(--primary-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
    margin-top: 0.5rem;
    transition: all 0.3s ease;
    cursor: default;
}

.tech-tag:hover {
    transform: scale(1.1) translateY(-2px);
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
    box-shadow: 0 4px 12px var(--shadow-xl);
}

.calendar-section {
    padding: 2rem 0;
}

.calendar-section h2 {
    text-align: center;
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

.calendar-section h3 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    font-size: 1.5rem;
}

.calendar-section .subtitle {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Contact Form Styles */
.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto 3rem;
    padding: 2.5rem;
    background-color: var(--white);
    border-radius: 20px;
    box-shadow: 0 4px 16px var(--shadow);
    transition: all 0.4s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.contact-form-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

.contact-form {
    width: 100%;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--medium-gray);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background-color: var(--warm-bg);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: scale(1.01);
    background-color: var(--white);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 12px;
    font-size: 0.95rem;
    text-align: center;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(22, 163, 74, 0.1));
    color: #15803d;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-message.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.1));
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Divider */
.divider {
    position: relative;
    text-align: center;
    margin: 3rem 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--medium-gray), transparent);
}

.divider span {
    position: relative;
    display: inline-block;
    padding: 0 1.5rem;
    background: var(--warm-bg-alt);
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.9rem;
}

.calendar-wrapper {
    background-color: var(--white);
    border-radius: 20px;
    box-shadow: 0 4px 16px var(--shadow);
    padding: 1.5rem;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.calendar-wrapper:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px var(--shadow-xl);
    border-color: rgba(37, 99, 235, 0.2);
}

.calendar-wrapper iframe {
    border-radius: 12px;
}

footer {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(14, 165, 233, 0.05));
    padding: 2.5rem;
    text-align: center;
    color: var(--text-light);
    margin-top: 4rem;
    border-top: 1px solid rgba(37, 99, 235, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .nav-chips {
        gap: 0.5rem;
    }

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

    .resume-section {
        padding: 1.5rem;
    }

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

    main {
        padding: 1rem;
    }

    .calendar-wrapper {
        padding: 0.5rem;
    }

    .calendar-wrapper iframe {
        height: 500px;
    }
}