/* ==========================================
   PROFESSIONAL PORTFOLIO DESIGN
   Modern, Clean, Premium
   ========================================== */

/* ========== CSS VARIABLES ========== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    
    /* Backgrounds */
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-dark: #111827;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace;
}

/* ========== RESET & BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.6;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

.lead {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.7;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========== HEADER / NAVBAR ========== */
.main-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 0;
    gap: 2rem;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: translateY(-2px);
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.75rem;
}

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

/* Main Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    position: relative;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.938rem;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

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

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-header-primary {
    padding: 0.625rem 1.5rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-base);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.mobile-menu.active {
    max-height: 500px;
}

.mobile-nav {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-link {
    padding: 0.875rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--gray-100);
    color: var(--primary);
}

.mobile-menu-actions {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.btn-mobile-primary {
    display: block;
    width: 100%;
    padding: 0.875rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
}

/* ========== MAIN CONTENT ========== */
.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
}

/* ========== HERO SECTION ========== */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8rem 0 6rem;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-outline-light {
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: var(--primary-dark);
}

.btn-outline-light {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-light:hover {
    background: white;
    color: var(--primary);
    border-color: white;
}

/* ========== SECTIONS ========== */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: var(--gray-100);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ========== CARDS ========== */
.service-card, .project-card, .experience-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
    height: 100%;
}

.service-card:hover, .project-card:hover, .experience-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.experience-card {
    border-left: 4px solid var(--primary);
}

.experience-card h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.375rem;
}

.project-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.service-icon {
    width: 3.5rem;
    height: 3.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

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

.service-card p, .project-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

.service-card ul, .project-card ul {
    margin-bottom: 0;
}

.service-card ul li, .project-card ul li {
    margin-bottom: 0.5rem;
}

.service-card ul li:last-child, .project-card ul li:last-child {
    margin-bottom: 0;
}

/* ========== SKILLS ========== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.skill-item {
    background: white;
    border: 1px solid var(--gray-200);
    padding: 1.25rem;
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.skill-item:hover {
    border-color: var(--primary);
    background: var(--gray-50);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* ========== PROJECTS ========== */
.filter-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    background: white;
    border: 2px solid var(--gray-300);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.938rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--gray-50);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.project-image {
    position: relative;
    height: 180px;
    min-height: 180px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    overflow: hidden;
    flex-shrink: 0;
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.project-initials {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    opacity: 0.9;
    letter-spacing: 0.1em;
}

.project-category {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: white;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.813rem;
    font-weight: 600;
    color: var(--primary);
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 0;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0;
    line-height: 1.3;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
    flex: 1 1 auto;
    font-size: 0.938rem;
    min-height: 3em;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0;
}

.tech-badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--gray-100);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: 0.813rem;
    font-weight: 600;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.project-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.project-links .btn {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.project-links .btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.project-links .btn-primary {
    background: var(--primary);
    color: white;
    border: none;
}

.project-links .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-links .btn-outline-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--gray-300);
}

.project-links .btn-outline-secondary:hover {
    background: var(--gray-100);
    color: var(--text-primary);
    border-color: var(--text-primary);
}

/* ========== CONTACT ========== */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.contact-item h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--primary);
    font-weight: 500;
    word-break: break-all;
}

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

.contact-form-wrapper {
    background: white;
    border: 1px solid var(--gray-200);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.938rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.social-icons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all var(--transition-base);
    flex: 1;
    min-width: 0;
    text-align: center;
}

.social-icon:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ========== FOOTER ========== */
.main-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    margin-top: auto;
}

.footer-content {
    padding: 4rem 0 2rem;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    color: white;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-brand .logo-text strong {
    color: var(--primary-light);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.footer-title {
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--gray-400);
    line-height: 1.6;
}

.footer-contact li strong {
    color: var(--gray-300);
    min-width: 70px;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.footer-social .social-link {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--gray-800);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-base);
}

.footer-social .social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 1.5rem 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: var(--gray-500);
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    gap: 2rem;
}

.footer-bottom-links a {
    color: var(--gray-500);
    font-size: 0.938rem;
}

.footer-bottom-links a:hover {
    color: var(--primary-light);
}

/* ========== PAGE HEADERS ========== */
.about-hero, .projects-hero, .contact-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 5rem 0 4rem;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.about-hero::before, .projects-hero::before, .contact-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.page-title {
    position: relative;
    z-index: 1;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-subtitle {
    position: relative;
    z-index: 1;
    font-size: 1.25rem;
    opacity: 0.9;
}

/* ========== ABOUT PAGE ========== */
.about-image-wrapper {
    position: relative;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.placeholder-text {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.placeholder-text h2 {
    font-size: 4rem;
    font-weight: 800;
    color: white;
    opacity: 0.95;
    letter-spacing: 0.1em;
    margin: 0;
}

.timeline-item {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.timeline-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.timeline-item h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.timeline-item .text-muted {
    color: var(--text-muted);
    font-size: 0.938rem;
    margin-bottom: 0.75rem;
}

.timeline-item ul {
    margin: 0;
    padding-left: 1.5rem;
}

.timeline-item ul li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.timeline-item ul li:last-child {
    margin-bottom: 0;
}

.skill-category {
    margin-bottom: 1.5rem;
}

.skill-category:last-child {
    margin-bottom: 0;
}

.skill-category h4 {
    font-size: 0.938rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 600;
    border: 1px solid var(--gray-200);
}

/* ========== UTILITIES ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.text-muted {
    color: var(--text-muted) !important;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.my-5 {
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.mt-5 {
    margin-top: 3rem;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 3rem;
    border-radius: var(--radius-2xl);
    text-align: center;
    color: white;
    box-shadow: var(--shadow-xl);
}

.cta-box h3 {
    color: white;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .header-actions {
        display: none;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.875rem; }
    h3 { font-size: 1.375rem; }
    
    .hero-section {
        padding: 4rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
        gap: 0.75rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .service-card,
    .experience-card,
    .project-card {
        padding: 1.5rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
    
    .social-icons {
        grid-template-columns: 1fr 1fr;
    }
    
    .placeholder-text h2 {
        font-size: 3rem;
    }
    
    .lead {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-section {
        padding: 3rem 0 2.5rem;
    }
    
    .hero-title {
        font-size: 1.875rem;
        line-height: 1.25;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-description {
        font-size: 0.938rem;
    }
    
    .hero-badge {
        font-size: 0.813rem;
        padding: 0.375rem 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .btn-primary, .btn-outline-light {
        width: 100%;
        justify-content: center;
        padding: 0.75rem 1.5rem;
        font-size: 0.938rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-badge {
        font-size: 0.813rem;
        padding: 0.375rem 1rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .skill-item {
        padding: 0.875rem 0.5rem;
        font-size: 0.813rem;
    }
    
    .service-card,
    .experience-card,
    .contact-form-wrapper {
        padding: 1.25rem;
    }
    
    .project-card {
        padding: 0;
    }
    
    .project-content {
        padding: 1.25rem;
        gap: 0.875rem;
    }
    
    .project-links .btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.813rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.813rem;
        margin: 0.25rem;
    }
    
    .cta-box {
        padding: 2rem 1.5rem;
    }
    
    .cta-box h3 {
        font-size: 1.5rem;
    }
    
    .cta-box p {
        font-size: 1rem;
    }
    
    .social-icons {
        grid-template-columns: 1fr;
    }
    
    .footer-social {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .placeholder-text h2 {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 0.938rem;
    }
}

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

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

/* ========== BLAZOR SPECIFIC ========== */
.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNTYiIGhlaWdodD0iNDkiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIG92ZXJmbG93PSJoaWRkZW4iPjxkZWZzPjxjbGlwUGF0aCBpZD0iY2xpcDAiPjxyZWN0IHg9IjIzNSIgeT0iNTEiIHdpZHRoPSI1NiIgaGVpZ2h0PSI0OSIvPjwvY2xpcFBhdGg+PC9kZWZzPjxnIGNsaXAtcGF0aD0idXJsKCNjbGlwMCkiIHRyYW5zZm9ybT0idHJhbnNsYXRlKC0yMzUgLTUxKSI+PHBhdGggZD0iTTI2My41MDYgNTFDMjY0LjcxNyA1MSAyNjUuODEzIDUxLjQ4MzcgMjY2LjYwNiA1Mi4yNjU4TDI2Ny4wNTIgNTIuNzk4NyAyNjcuNTM5IDUzLjYyODMgMjkwLjE4NSA5Mi4xODMxIDI5MC41NDUgOTIuNzk1IDI5MC42NTYgOTIuOTk2QzI5MC44NzcgOTMuNTEzIDI5MSA5NC4wODE1IDI5MSA5NC42NzgyIDI5MSA5Ny4wNjUxIDI4OS4wMzggOTkgMjg2LjYxNyA5OUwyNDAuMzgzIDk5QzIzNy45NjMgOTkgMjM2IDk3LjA2NTEgMjM2IDk0LjY3ODIgMjM2IDk0LjM3OTkgMjM2LjAzMSA5NC4wODg2IDIzNi4wODkgOTMuODA3MkwyMzYuMzM4IDkzLjAxNjIgMjM2Ljg1OCA5Mi4xMzE0IDI1OS40NzMgNTMuNjI5NCAyNTkuOTYxIDUyLjc5ODUgMjYwLjQwNyA1Mi4yNjU4QzI2MS4yIDUxLjQ4MzcgMjYyLjI5NiA1MSAyNjMuNTA2IDUxWk0yNjMuNTg2IDY2LjAxODNDMjYwLjczNyA2Ni4wMTgzIDI1OS4zMTMgNjcuMTI0NSAyNTkuMzEzIDY5LjMzNyAyNTkuMzEzIDY5LjYxMDIgMjU5LjMzMiA2OS44NjA4IDI1OS4zNzEgNzAuMDg4N0wyNjEuNzk1IDg0LjAxNjEgMjY1LjM4IDg0LjAxNjEgMjY3LjgyMSA2OS43NDc1QzI2Ny44NiA2OS43MzA5IDI2Ny44NzkgNjkuNTg3NyAyNjcuODc5IDY5LjMxNzkgMjY3Ljg3OSA2Ny4xMTgyIDI2Ni40NDggNjYuMDE4MyAyNjMuNTg2IDY2LjAxODNaTTI2My41NzYgODYuMDU0N0MyNjEuMDQ5IDg2LjA1NDcgMjU5Ljc4NiA4Ny4zMDA1IDI1OS43ODYgODkuNzkyMSAyNTkuNzg2IDkyLjI4MzcgMjYxLjA0OSA5My41Mjk1IDI2My41NzYgOTMuNTI5NSAyNjYuMTE2IDkzLjUyOTUgMjY3LjM4NyA5Mi4yODM3IDI2Ny4zODcgODkuNzkyMSAyNjcuMzg3IDg3LjMwMDUgMjY2LjExNiA4Ni4wNTQ3IDI2My41NzYgODYuMDU0N1oiIGZpbGw9IiNGRkU1MDAiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPjwvZz48L3N2Zz4=) no-repeat 1rem/1.8rem, var(--danger);
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
    border-radius: var(--radius-md);
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

.valid.modified:not([type=checkbox]) {
    outline: 2px solid var(--success);
}

.invalid {
    outline: 2px solid var(--danger);
}

.validation-message {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}