/* ===== VARIABLES ===== */
:root {
    /* Colors inspired by Claude.ai */
    --primary-color: #FF6B35;
    --secondary-color: #F7931E;
    --accent-color: #FFB627;
    --dark-bg: #0F0F23;
    --darker-bg: #0A0A1A;
    --card-bg: #1A1A2E;
    --text-primary: #FFFFFF;
    --text-secondary: #B8BCC8;
    --text-muted: #8B8FA3;
    --border-color: #2A2A3E;
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    --gradient-secondary: linear-gradient(135deg, #F7931E 0%, #FFB627 100%);
    --gradient-dark: linear-gradient(135deg, #0F0F23 0%, #1A1A2E 100%);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: #FF6B35; /* Fallback */
    display: inline-block;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.gradient-text {
    background: var(--gradient-primary);
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: #FF6B35; /* Fallback for unsupported browsers */
    display: inline-block;
}

/* ===== BUTTONS ===== */
.btn {
    font-weight: 500;
    border-radius: 12px;
    padding: 12px 24px;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-outline-light {
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    background: transparent;
}

.btn-outline-light:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: all var(--transition-normal);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary) !important;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: all var(--transition-fast);
    position: relative;
}

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

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

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

/* ===== HERO SECTION ===== */
.hero-section {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(247, 147, 30, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    margin-bottom: 3rem;
}

.hero-stats {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.stat-item h3 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== CODE WINDOW ===== */
.hero-visual {
    position: relative;
}

.code-window {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.window-header {
    background: var(--darker-bg);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.window-controls {
    display: flex;
    gap: 0.5rem;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.close { background: #FF5F57; }
.control.minimize { background: #FFBD2E; }
.control.maximize { background: #28CA42; }

.window-title {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.code-content {
    padding: 2rem;
}

.code-content pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
}

/* ===== SECTIONS ===== */
.features-section,
.about-section,
.testimonials-section,
.contact-section,
.download-section {
    padding: var(--section-padding);
    position: relative;
}

.features-section {
    background: var(--darker-bg);
}

.about-section {
    background: var(--dark-bg);
}

.testimonials-section {
    background: var(--darker-bg);
}

.contact-section {
    background: var(--dark-bg);
}

.download-section {
    background: var(--gradient-dark);
    text-align: center;
}

/* ===== FEATURE CARDS ===== */
.feature-card {
    background: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-normal);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== ABOUT SECTION ===== */
.about-image {
    position: relative;
    text-align: center;
}

.profile-image {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.about-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.2;
    z-index: -1;
}

.about-skills {
    margin: 2rem 0;
}

.skill-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.skill-item i {
    color: var(--primary-color);
    margin-right: 1rem;
    font-size: 1.2rem;
    width: 20px;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
    border-color: transparent;
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    height: 100%;
    transition: all var(--transition-normal);
}

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

.testimonial-rating {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.author-image {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-info h5 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.author-info span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== CONTACT FORM ===== */
.contact-form {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.form-floating > .form-control {
    background: var(--darker-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 12px;
}

.form-floating > .form-control:focus {
    background: var(--darker-bg);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(255, 107, 53, 0.25);
    color: var(--text-primary);
}

.form-floating > label {
    color: var(--text-muted);
}

.contact-info {
    text-align: center;
    padding: 2rem 1rem;
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.contact-info h5 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

/* ===== FOOTER ===== */
.footer {
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.footer-brand {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.footer-text {
    margin: 0;
    font-size: 0.9rem;
}

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

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .profile-image {
        width: 250px;
        height: 250px;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .footer-links {
        justify-content: center;
        margin-bottom: 1rem;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .feature-card,
    .testimonial-card {
        padding: 2rem 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero-visual {
    animation: float 6s ease-in-out infinite;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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

/* ===== SELECTION ===== */
::selection {
    background: var(--primary-color);
    color: white;
}