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

:root {
    /* Colors - Light theme matching the design */
    --bg-primary: #f0f4f8;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #dbeafe;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --card-padding: 2rem;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Navigation Header */
.nav-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    gap: var(--spacing-lg);
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    flex-shrink: 0;
    display: flex;
    align-items: baseline;
}

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    z-index: 101;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform 0.2s ease, opacity 0.2s ease;
    border-radius: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    flex: 1;
    justify-content: center;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

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

.nav-cta-button,
.nav-btn {
    padding: 0.625rem 1.5rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-cta-button:hover,
.nav-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Location Indicator */
.location-indicator {
    padding: 0.75rem 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    text-align: center;
}

.location-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 999px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.location-badge svg {
    color: var(--accent);
}

/* Hero Section */
.hero-section {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    text-align: center;
    background: linear-gradient(to bottom, #e0f2fe 0%, #ffffff 100%);
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.hero-name-blue {
    color: var(--accent);
}

.hero-name-teal {
    color: #14b8a6;
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.7;
}

.hero-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.hero-button-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

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

.hero-button-secondary {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.hero-button-secondary:hover {
    background-color: white;
    color: var(--text-primary);
    border-color: var(--text-primary);
}

/* Professional Experience Section */
.experience-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.experience-button-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.resume-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.resume-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.resume-button svg {
    width: 20px;
    height: 20px;
}

.linkedin-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background-color: #0077b5;
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.linkedin-button:hover {
    background-color: #005885;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.linkedin-button svg {
    width: 20px;
    height: 20px;
}

/* Certifications Section */
.certifications-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.cert-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

.cert-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.cert-icon {
    width: 48px;
    height: 48px;
    background-color: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}

.cert-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Projects Section */
.projects-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Project Card */
.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* Big Flight Deals Card with Dark Header */
.project-card-bfd .project-header-dark {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    padding: var(--spacing-md);
}

.project-header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.project-header-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.project-header-subtitle {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}

.project-deal-item {
    padding: var(--spacing-sm);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-xs);
}

.deal-route {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.deal-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.deal-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: white;
}

.deal-airline {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.deal-button {
    width: 100%;
    padding: 0.5rem;
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.deal-button:hover {
    background-color: var(--accent-hover);
}

.project-image-container {
    width: 100%;
    height: 240px;
    overflow: hidden;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-generic {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
}

.project-icon-wrapper {
    width: 80px;
    height: 80px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    box-shadow: var(--shadow-md);
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-content {
    padding: var(--card-padding);
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    background-color: var(--accent-light);
    color: var(--accent);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s ease;
    margin-top: var(--spacing-sm);
}

.project-link:hover {
    color: var(--accent-hover);
    transform: translateX(4px);
}

.project-link svg {
    width: 16px;
    height: 16px;
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--bg-primary);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .contact-layout {
        grid-template-columns: 1fr 1.2fr;
        gap: var(--spacing-3xl);
    }
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.contact-detail-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.contact-detail-card:hover {
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: var(--accent-light);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    flex-shrink: 0;
}

.contact-detail-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.contact-detail-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-detail-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.contact-detail-value:hover {
    color: var(--accent);
}

/* Contact Form */
.contact-form-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    box-shadow: var(--shadow-lg);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-textarea {
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    transition: all 0.2s ease;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-submit-button {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background-color: var(--accent);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    margin-top: var(--spacing-sm);
}

.form-submit-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.form-submit-button:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border);
    background-color: var(--bg-secondary);
}

.footer-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hamburger Menu Animation */
.nav-open .nav-toggle span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Desktop Navigation - Ensure desktop layout is preserved */
@media (min-width: 769px) {
    .nav-toggle {
        display: none !important;
    }
    
    .nav-links {
        display: flex !important;
        position: static;
        box-shadow: none;
        border-radius: 0;
        margin: 0;
        padding: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Navigation */
    .nav-container {
        align-items: center;
        padding: 0.75rem 0;
        flex-wrap: wrap;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem 1.25rem 1.25rem;
        background: var(--bg-secondary);
        box-shadow: 0 8px 18px rgba(15, 23, 42, 0.12);
        border-radius: 0 0 16px 16px;
        margin: 0 calc(-1 * var(--container-padding));
        z-index: 100;
        align-items: stretch;
    }

    .nav-open .nav-links {
        display: flex;
    }

    .nav-links a {
        font-size: 0.95rem;
        text-align: center;
        padding: 0.5rem 0;
    }

    .nav-cta-button,
    .nav-btn {
        padding: 0.55rem 1rem;
        font-size: 0.9rem;
    }

    /* Section Padding / Headings */
    section {
        padding: 3rem 1.25rem;
    }

    section h2,
    .section-title {
        font-size: 1.65rem;
        line-height: 1.2;
        text-align: center;
        margin-bottom: 1.25rem;
    }

    section p,
    .section-description {
        max-width: 90%;
        margin: 0.5rem auto 1.5rem;
        font-size: 1rem;
        line-height: 1.6;
    }

    /* Hero Section */
    .hero-section {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 0.75rem;
    }

    .hero-description {
        max-width: 85%;
        margin: 0 auto 1.75rem;
        font-size: 1rem;
        line-height: 1.6;
    }

    .location-badge {
        margin: 1rem auto 1.5rem;
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    /* Experience / Projects / General Buttons */
    .experience-container,
    .experience-content,
    .projects-section {
        text-align: center;
    }

    .hero-button-primary,
    .hero-button-secondary,
    .resume-button,
    .linkedin-button,
    .btn,
    .primary-btn,
    .secondary-btn {
        width: 100%;
        font-size: 1rem;
        padding: 0.9rem 1.1rem;
        margin-bottom: 1rem;
        display: block;
        justify-content: center;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .experience-button-container {
        flex-direction: column;
        gap: 0.75rem;
    }

    .projects-section {
        margin-bottom: 2rem;
    }

    .project-content {
        padding: var(--spacing-md);
    }

    /* Contact Section */
    .contact-section {
        padding: 2.5rem 1.25rem 2.75rem;
        margin-top: 2rem;
    }

    .contact-section h2,
    .contact-title {
        font-size: 1.6rem;
        margin-bottom: 1.25rem;
        text-align: center;
    }

    .contact-form-container {
        padding: 1.75rem;
        border-radius: 12px;
        max-width: 100%;
    }

    .contact-form {
        padding: 0;
    }

    .form-label {
        font-size: 0.95rem;
        margin-bottom: 0.35rem;
    }

    .form-input,
    .form-textarea {
        width: 100%;
        padding: 0.85rem 0.9rem;
        font-size: 1rem;
        border-radius: 8px;
    }

    .form-textarea {
        height: 130px;
    }

    .form-submit-button {
        width: 100%;
        padding: 0.95rem 1.1rem;
        font-size: 1rem;
        margin-top: 1rem;
    }

    /* Footer */
    .footer {
        padding: 1.75rem 0;
        font-size: 0.9rem;
        text-align: center;
    }

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

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

@media (max-width: 480px) {
    .nav-links a {
        font-size: 0.85rem;
    }

    .nav-cta-button,
    .nav-btn {
        font-size: 0.85rem;
        padding: 0.5rem 0.85rem;
    }

    section h2,
    .section-title {
        font-size: 1.45rem;
    }

    section p,
    .section-description {
        max-width: 94%;
        font-size: 0.95rem;
    }

    .hero-button-primary,
    .hero-button-secondary,
    .resume-button,
    .linkedin-button,
    .btn,
    .primary-btn,
    .secondary-btn {
        font-size: 0.95rem;
        padding: 0.8rem 1rem;
    }

    .contact-form-container {
        padding: 1.5rem;
    }

    .form-input,
    .form-textarea {
        font-size: 0.95rem;
    }

    .form-submit-button {
        font-size: 0.95rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}