/* Custom CSS for Bootstrap Portfolio */

/* CSS Variables for Theme Colors */
:root {
    --primary-color: #1e40af;
    --secondary-color: #3b82f6;
    --accent-color: #60a5fa;
    --success-color: #10b981;
    --info-color: #06b6d4;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-color: #f8fafc;
    --dark-color: #0f172a;
    
    /* Modern Blue Gradient Colors */
    --primary-gradient: linear-gradient(135deg, #1e40af, #3b82f6);
    --secondary-gradient: linear-gradient(135deg, #3b82f6, #60a5fa);
    --success-gradient: linear-gradient(135deg, #10b981, #34d399);
    --info-gradient: linear-gradient(135deg, #06b6d4, #22d3ee);
    --warning-gradient: linear-gradient(135deg, #f59e0b, #fbbf24);
    
    /* Shadow Variables */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Transition Variables */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

/* Dark Theme Variables */
[data-bs-theme="dark"] {
    --bs-body-bg: #0d1117;
    --bs-body-color: #e6edf3;
    --bs-border-color: #30363d;
}

/* Global Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

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

::-webkit-scrollbar-track {
    background: var(--light-color);
}

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

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

/* Typography */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Navigation Styles */
#mainNav {
    background: rgba(30, 64, 175, 0.95);
    backdrop-filter: blur(10px);
    transition: var(--transition-base);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#mainNav.scrolled {
    background: rgba(30, 64, 175, 0.98);
    box-shadow: var(--shadow);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-link {
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #fff !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #fff;
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
    position: relative;
    color: white;
}

.hero-bg {
    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 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/><circle cx="900" cy="800" r="80" fill="url(%23a)"/></svg>');
    opacity: 0.3;
}

.profile-avatar {
    width: 150px;
    height: 150px;
    position: relative;
}

.avatar-circle {
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.2);
}

.avatar-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.avatar-circle::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    transition: var(--transition-base);
}

.avatar-circle:hover {
    transform: scale(1.05) rotate(5deg);
}

.avatar-circle:hover::before {
    animation: shimmer 1.5s ease-in-out;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.avatar-text {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    z-index: 2;
    position: relative;
}

.professional-badges .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 500;
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.hero-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.social-links .social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition-base);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-links .social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
    color: white;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: white;
    font-size: 1.5rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Gradient Backgrounds */
.bg-primary-gradient {
    background: var(--primary-gradient) !important;
}

.bg-success-gradient {
    background: var(--success-gradient) !important;
}

.bg-info-gradient {
    background: var(--info-gradient) !important;
}

.bg-warning-gradient {
    background: var(--warning-gradient) !important;
}

/* Button Gradients */
.btn-primary-gradient {
    background: var(--primary-gradient);
    border: none;
    color: white;
}

.btn-primary-gradient:hover {
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
    color: white;
}

/* Stats Section */
.stat-card {
    padding: 2rem 1rem;
    transition: var(--transition-base);
    border-radius: 15px;
    background: white;
    box-shadow: var(--shadow-sm);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 1.5rem;
}

.stat-icon-small {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    font-size: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    font-weight: 500;
}

/* Contact Icons */
.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.contact-icon-large {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

/* Experience Cards */
.experience-item .card {
    transition: var(--transition-base);
    border-radius: 15px;
}

.experience-item .card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.achievement-item {
    transition: var(--transition-base);
}

.achievement-item:hover {
    transform: translateX(5px);
}

.tech-badges .badge {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
}

/* Skills Section */
.nav-pills .nav-link {
    border-radius: 50px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.nav-pills .nav-link:not(.active) {
    color: var(--primary-color);
    background: transparent;
    border-color: var(--primary-color);
}

.nav-pills .nav-link:not(.active):hover {
    background: var(--primary-color);
    color: white;
}

.nav-pills .nav-link.active {
    background: var(--primary-gradient);
    border-color: transparent;
}

.skill-item {
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.skill-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.progress {
    border-radius: 10px;
    overflow: hidden;
}

.progress-bar {
    border-radius: 10px;
    transition: width 1s ease-in-out;
}

/* Project Cards */
.project-card {
    transition: var(--transition-base);
    border-radius: 15px;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.project-card .card-header {
    position: relative;
    overflow: hidden;
}

.project-card .card-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30px, -30px);
    transition: var(--transition-base);
}

.project-card:hover .card-header::before {
    transform: translate(30px, -30px) scale(1.5);
}

.metric-card {
    transition: var(--transition-base);
}

.metric-card:hover {
    background: var(--primary-color) !important;
    color: white !important;
}

.metric-card:hover .fw-bold {
    color: white !important;
}

.metric-card:hover .text-muted {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Certification Cards */
.cert-card {
    transition: var(--transition-base);
    border-radius: 15px;
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.cert-icon {
    font-size: 2rem;
}

/* Badge Light Variants */
.bg-primary-light {
    background-color: rgba(13, 110, 253, 0.1) !important;
}

.bg-success-light {
    background-color: rgba(25, 135, 84, 0.1) !important;
}

.bg-info-light {
    background-color: rgba(13, 202, 240, 0.1) !important;
}

.bg-warning-light {
    background-color: rgba(255, 193, 7, 0.1) !important;
}

/* Contact Section */
.social-links-large .social-link-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition-base);
    font-size: 1.2rem;
}

.social-links-large .social-link-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    color: white;
}

/* Form Styles */
.form-control {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: var(--transition-base);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Dark Theme Adjustments */
[data-bs-theme="dark"] .stat-card,
[data-bs-theme="dark"] .skill-item {
    background: #161b22;
    border: 1px solid #30363d;
}

[data-bs-theme="dark"] .form-control {
    background: #0d1117;
    border-color: #30363d;
    color: #e6edf3;
}

[data-bs-theme="dark"] .form-control:focus {
    background: #0d1117;
    border-color: var(--primary-color);
    color: #e6edf3;
}

[data-bs-theme="dark"] .form-label {
    color: #e6edf3;
}

/* Animation Classes */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in-up.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 0;
    }
    
    .display-3 {
        font-size: 2.5rem;
    }
    
    .profile-avatar {
        width: 120px;
        height: 120px;
    }
    
    .avatar-text {
        font-size: 2.5rem;
    }
    
    .professional-badges .badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
        margin-bottom: 0.5rem;
    }
    
    .hero-buttons .btn {
        padding: 0.6rem 1.5rem;
        margin-bottom: 0.5rem;
    }
    
    .stat-card {
        padding: 1.5rem 1rem;
        margin-bottom: 1rem;
    }
    
    .nav-pills .nav-link {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .display-3 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .scroll-indicator,
    #contact {
        display: none !important;
    }
    
    .hero-section {
        background: white !important;
        color: black !important;
    }
    
    .gradient-text {
        color: var(--primary-color) !important;
        -webkit-text-fill-color: var(--primary-color) !important;
    }
}