/* Custom CSS Variables */
:root {
    /* Light Mode Colors - Elegant Gold & Black */
    --primary-gold: #9C7B2A;
    --secondary-gold: #B8941F;
    --accent-gold: #D4C5A0;
    --dark-black: #000000;
    --soft-black: #1A1A1A;
    --medium-gray: #2D2D2D;
    --light-gray: #F5F5F5;
    --white: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #4A4A4A;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F8F8;
    --border-color: #E5E5E5;
    
    /* Dark Mode Colors */
    --dark-primary-gold: #B8941F;
    --dark-secondary-gold: #9C7B2A;
    --dark-accent-gold: #D4C5A0;
    --dark-bg-primary: #0A0A0A;
    --dark-bg-secondary: #1A1A1A;
    --dark-bg-tertiary: #2D2D2D;
    --dark-text-primary: #FFFFFF;
    --dark-text-secondary: #B0B0B0;
    --dark-border-color: #333333;
}

/* Dark mode theme */
[data-theme="dark"] {
    --primary-gold: var(--dark-primary-gold);
    --secondary-gold: var(--dark-secondary-gold);
    --accent-gold: var(--dark-accent-gold);
    --bg-primary: var(--dark-bg-primary);
    --bg-secondary: var(--dark-bg-secondary);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --border-color: var(--dark-border-color);
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gold);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gold);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 1000;
    background: var(--primary-gold);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    color: var(--white);
    font-size: 1.2rem;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(156, 123, 42, 0.3);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar {
    background: rgba(10, 10, 10, 0.95);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-gold) !important;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
    margin: 0 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gold);
    transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after {
    width: 100%;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-gold) !important;
}

.navbar-toggler {
    border: none;
    color: var(--text-primary);
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2826, 26, 26, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
    padding: 60px 0 40px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%239C7B2A" opacity="0.08"/><circle cx="75" cy="75" r="1" fill="%239C7B2A" opacity="0.08"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.profile-img {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-gold);
    filter: sepia(20%);
    transition: all 0.3s ease;
    box-shadow: 0 20px 40px rgba(156, 123, 42, 0.3);
}

.profile-img:hover {
    filter: sepia(0%);
    transform: scale(1.05);
    box-shadow: 0 25px 50px rgba(156, 123, 42, 0.4);
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-content .lead {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.social-links a {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: 0 1rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-gold);
    transform: translateY(-3px);
}

/* Buttons */
.btn-gold {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--secondary-gold) 100%);
    border: none;
    color: var(--white);
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 30px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(156, 123, 42, 0.3);
    color: var(--white);
    text-decoration: none;
}

.btn-outline-gold {
    border: 2px solid var(--primary-gold);
    color: var(--primary-gold);
    background: transparent;
    font-weight: 600;
    padding: 10px 28px;
    border-radius: 30px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-outline-gold:hover {
    background: var(--primary-gold);
    color: var(--white);
    text-decoration: none;
}

/* Sections */
.section {
    padding: 70px 0;
}

.section-title {
    font-size: 2.3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-gold);
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

.about-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .skill-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.skill-card i {
    font-size: 2.5rem;
    color: var(--primary-gold);
    margin-bottom: 0.75rem;
}

.skill-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.skill-card p {
    color: var(--text-secondary);
}

/* Projects Section */
.project-card {
    background: var(--bg-primary);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    height: 100%;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .project-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-img {
    height: 200px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--primary-gold) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-img i {
    font-size: 4rem;
    color: var(--white);
}

.project-content {
    padding: 1.5rem;
}

.project-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.project-links a {
    color: var(--primary-gold);
    margin-right: 1rem;
    text-decoration: none;
    font-weight: 500;
}

.project-links a:hover {
    text-decoration: underline;
}

/* Mentoring Section */
.mentoring {
    background: var(--bg-secondary);
}

/* Testimonial Carousel */
.testimonial-carousel {
    position: relative;
}

.testimonial-slider {
    position: relative;
}

.testimonial-slide {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.testimonial-slide.active {
    display: flex;
    opacity: 1;
}

.testimonial-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    gap: 1rem;
}

.carousel-btn {
    background: var(--primary-gold);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.carousel-btn:hover {
    background: var(--secondary-gold);
    transform: scale(1.1);
}

.carousel-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(156, 123, 42, 0.3);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--primary-gold);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active,
.dot:hover {
    background: var(--primary-gold);
}

.dot:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(156, 123, 42, 0.3);
}

.testimonial-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 15px;
    border-left: 4px solid var(--primary-gold);
    margin-bottom: 1.5rem;
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 3rem;
    color: var(--primary-gold);
    font-family: serif;
}

.testimonial-card p {
    color: var(--text-secondary);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 1rem;
}

.author-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-gold);
    margin-right: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
}

.testimonial-author strong {
    color: var(--text-primary);
}

.testimonial-author small {
    color: var(--text-secondary);
}

/* Contact Section */
.contact-card {
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .contact-card:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.contact-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.contact-card p {
    color: var(--text-secondary);
}

.contact-card .text-warning {
    color: var(--primary-gold) !important;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-secondary);
    margin: 0;
}

.footer .text-warning {
    color: var(--primary-gold) !important;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        min-height: 75vh;
        padding: 40px 0 30px;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .profile-img {
        width: 220px;
        height: 220px;
        margin-top: 1rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

    .theme-toggle {
        top: 80px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }

    .navbar-nav .nav-link {
        margin: 0 0.5rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 1.5rem;
    }

    .social-links a {
        margin: 0 0.5rem;
        font-size: 1.3rem;
    }

    .hero-content .lead {
        font-size: 1.1rem;
        margin-bottom: 1.25rem;
    }
}

@media (max-width: 576px) {
    .hero {
        min-height: 70vh;
        padding: 30px 0 20px;
    }

    .hero-content h1 {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }

    .hero-content .lead {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .profile-img {
        width: 180px;
        height: 180px;
        margin-top: 1.5rem;
    }

    .btn-gold, .btn-outline-gold {
        padding: 10px 20px;
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 1.25rem;
    }

    .theme-toggle {
        top: 70px;
        right: 10px;
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }

    .skill-card, .project-content, .testimonial-card, .contact-card {
        padding: 1.25rem;
    }
    
    .carousel-btn {
        width: 35px;
        height: 35px;
        font-size: 0.8rem;
    }
    
    .testimonial-controls {
        margin-top: 1.5rem;
        gap: 0.75rem;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
}