/* Main CSS for Portfolio */

/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    line-height: 1.6;
    color: #f5f5f5; /* Light text color */
    background-color: #1a1a1a; /* Dark background color */
}

/* Section-specific styles */
.section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Welcome Section */
.welcome-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d3748 50%, #1a1a1a 100%);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    position: relative;
}

.welcome-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../assets/backgrounds/welcome_3.jpeg') center/cover;
    opacity: 0.3;
    z-index: 1;
}

.welcome-content {
    max-width: 800px;
    padding: 2rem;
    z-index: 2;
    position: relative;
}

.welcome-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: #00aaff; /* Blue accent color from project pages */
}

.welcome-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    color: #f5f5f5;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: #00aaff;
    cursor: pointer;
}

/* Skill Tree Section */
.skill-section {
    background-color: #1a1a1a; /* Dark background */
    color: #f5f5f5; /* Light text */
    position: relative;
    padding: 4rem 0;
    overflow: hidden;
}

/* Animated shapes for skills section */
.skill-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: 
        radial-gradient(circle at 15% 45%, rgba(0, 170, 255, 0.1), transparent 30%),
        radial-gradient(circle at 85% 75%, rgba(139, 92, 246, 0.08), transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(239, 68, 68, 0.05), transparent 50%);
    animation: moveAndSpin 60s linear infinite;
    z-index: 0;
}

.skill-content {
    max-width: 1200px;
    width: 100%;
    padding: 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

.skill-content h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    font-weight: 700;
    color: #00aaff; /* Blue accent color */
    letter-spacing: -0.02em;
}

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

.skill-category {
    background: rgba(45, 55, 72, 0.8);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 170, 255, 0.2);
    border-color: rgba(0, 170, 255, 0.3);
}

.skill-category h3 {
    margin-bottom: 1rem;
    font-size: 1.3rem;
    color: #f8fafc;
}

.skill-category ul {
    list-style: none;
    text-align: left;
}

.skill-category li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
}

.skill-category li:last-child {
    border-bottom: none;
}

/* Navigation */
.nav-links {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    gap: 1rem;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    border: none;
    outline: none;
    background: transparent;
    box-shadow: none;
}

/* Hide navigation when not in welcome section */
.nav-links.hidden {
    opacity: 0;
    visibility: hidden;
}

.nav-links a {
    color: #f5f5f5;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    background: rgba(45, 55, 72, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
    font-size: 0.9rem;
}

/* Ensure icon links are centered and sized nicely */
.nav-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-links a i {
    font-size: 1.2rem;
    line-height: 1;
}

.nav-links a:hover {
    background: rgba(0, 170, 255, 0.2);
    transform: translateY(-1px);
    border-color: #00aaff;
    box-shadow: 0 8px 25px rgba(0, 170, 255, 0.3);
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: #f5f5f5;
    padding: 2rem 0;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #f5f5f5;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: #00aaff;
}

/* Resume Modal Styles */
.resume-modal, .email-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.resume-modal-content, .email-modal-content {
    background: rgba(45, 55, 72, 0.95);
    backdrop-filter: blur(10px);
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.resume-modal-header, .email-modal-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d3748 100%);
    color: #f5f5f5;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.resume-modal-header h3, .email-modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: #f5f5f5;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.resume-preview-content {
    padding: 2rem;
    color: #f5f5f5;
}

.resume-preview-info h4 {
    font-size: 2rem;
    color: #00aaff;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.resume-title {
    color: #10b981;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.resume-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    border-left: 4px solid #10b981;
}

.highlight-item i {
    color: #10b981;
    font-size: 1.1rem;
}

.highlight-item span {
    font-weight: 500;
    color: #f5f5f5;
}

.resume-summary {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.resume-summary p {
    color: #cbd5e1;
    line-height: 1.6;
    margin: 0;
}

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

.btn-preview {
    background: linear-gradient(135deg, #10b981 0%, #0d9488 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.btn-preview:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
}

.resume-note {
    color: #cbd5e1;
    font-size: 0.9rem;
    margin: 0;
}

/* Email Modal Styles */
.email-form-content {
    padding: 1.5rem;
    color: #f5f5f5;
}

.email-form-content p {
    color: #cbd5e1;
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #f8fafc;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    color: #f5f5f5;
}

.form-group input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group input::placeholder {
    color: #cbd5e1;
}

.form-actions {
    margin-top: 2rem;
}

.btn-submit {
    background: linear-gradient(135deg, #10b981 0%, #0d9488 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    justify-content: center;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.privacy-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    font-size: 0.9rem;
    color: #cbd5e1;
}

.privacy-note i {
    color: #667eea;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 2rem;
    color: #f5f5f5;
}

.success-message i {
    font-size: 3rem;
    color: #27ae60;
    margin-bottom: 1rem;
}

.success-message h4 {
    color: #f8fafc;
    margin-bottom: 1rem;
}

.success-message p {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
}

/* Fallback link for opening form in new tab */
.fallback-link {
    display: inline-block;
    margin-top: 0.75rem;
    color: #93c5fd;
    text-decoration: underline;
}

.fallback-link:hover {
    color: #bfdbfe;
}

/* Error Message */
.error-message {
    text-align: center;
    padding: 2rem;
    color: #f5f5f5;
}

.error-message i {
    font-size: 3rem;
    color: #dc2626;
    margin-bottom: 1rem;
}

.error-message p {
    color: #cbd5e1;
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 1.1rem;
}

.btn-retry {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-retry:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .resume-modal-content, .email-modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .resume-highlights {
        grid-template-columns: 1fr;
    }
    
    .resume-preview-info h4 {
        font-size: 1.5rem;
    }
}

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

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Navigation */
nav {
    background: rgba(45, 55, 72, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #f5f5f5;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #00aaff;
}

/* Main content */
main {
    padding: 3rem 0;
}

/* Loading Modal Styles */
.loading-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-modal.show {
    display: flex;
}

.loading-content {
    background: rgba(45, 55, 72, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f5f5f5;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.loading-spinner {
    font-size: 3rem;
    color: #00aaff;
    margin-bottom: 1rem;
}

.loading-content h3 {
    color: #f8fafc;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.loading-content p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.loading-progress {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #00aaff, #667eea);
    width: 0%;
    animation: progressAnimation 2s ease-in-out infinite;
}

@keyframes progressAnimation {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* Responsive design for loading modal */
@media (max-width: 768px) {
    .loading-content {
        margin: 1rem;
        padding: 1.5rem;
        max-width: 90%;
    }
    
    .loading-spinner {
        font-size: 2.5rem;
    }
    
    .loading-content h3 {
        font-size: 1.3rem;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .welcome-content h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        top: 1rem;
        right: 1rem;
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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