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

:root {
    /* Brand Colors */
    --primary-gradient: linear-gradient(135deg, #ed4036 0%, #f6921e 100%);
    --primary-start: #ed4036;
    --primary-end: #f6921e;
    
    /* Light Theme */
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --background: #ffffff;
    --surface: #f8f9fa;
    --border: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Borders */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: all 0.2s ease;
}

/* Dark Theme */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #b3b3b3;
        --text-muted: #808080;
        --background: #121212;
        --surface: #1e1e1e;
        --border: #333333;
        --shadow: rgba(0, 0, 0, 0.3);
        --shadow-hover: rgba(0, 0, 0, 0.5);
    }
}

[data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #808080;
    --background: #121212;
    --surface: #1e1e1e;
    --border: #333333;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.5);
}

[data-theme="light"] {
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --background: #ffffff;
    --surface: #f8f9fa;
    --border: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

/* Base Typography */
html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    background-color: var(--background);
    color: var(--text-primary);
    min-height: 100vh;
    transition: var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm);
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: 0 2px 8px var(--shadow);
}

.theme-toggle:hover {
    background: var(--primary-gradient);
    color: white;
    transform: scale(1.05);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(237, 64, 54, 0.3);
}

.theme-icon {
    width: 20px;
    height: 20px;
}

/* Container */
.container {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding-top: calc(var(--spacing-xl) + 44px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    opacity: 0;
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0%, 100% { opacity: 0; transform: translateX(-100%); }
    50% { opacity: 1; transform: translateX(100%); }
}

.profile-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.profile-photo:hover img {
    transform: scale(1.05);
}

.name {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

.title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.company {
    font-size: 1rem;
    font-weight: var(--font-weight-regular);
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

/* Contact Section */
.contact-section {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border);
}

.contact-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-item:hover {
    background: var(--background);
    transform: translateX(4px);
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
    padding: 8px;
}

.contact-details {
    flex: 1;
    min-width: 0;
}

.contact-link {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

.contact-value {
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    word-break: break-word;
}

/* Social Section */
.social-section {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border);
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
    background: var(--background);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: center;
    gap: var(--spacing-xs);
}

.social-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.social-link span {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

/* About Section */
.about-section {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border);
}

.about-text {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1rem;
    text-align: center;
}

/* Actions */
.actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.btn-primary,
.btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-height: 56px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    background: var(--background);
    border-color: var(--primary-start);
    transform: translateY(-1px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Focus Styles */
.btn-primary:focus,
.btn-secondary:focus,
.social-link:focus,
.contact-link:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(237, 64, 54, 0.3);
}

/* Responsive Design */
@media (min-width: 768px) {
    .container {
        max-width: 480px;
        padding: var(--spacing-xl);
    }
    
    .hero {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .profile-photo {
        width: 140px;
        height: 140px;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .social-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .actions {
        flex-direction: row;
        gap: var(--spacing-md);
    }
    
    .btn-primary,
    .btn-secondary {
        flex: 1;
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 520px;
    }
    
    .hero {
        padding: var(--spacing-xl);
    }
    
    .profile-photo {
        width: 160px;
        height: 160px;
    }
}

/* Print Styles */
@media print {
    .header {
        display: none;
    }
    
    .hero {
        background: linear-gradient(135deg, #ed4036 0%, #f6921e 100%) !important;
        color: white !important;
    }
    
    .actions {
        display: none;
    }
    
    .social-link {
        border: 1px solid #ccc !important;
    }
    
    .container {
        padding-top: var(--spacing-md);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --shadow: rgba(0, 0, 0, 0.5);
        --shadow-hover: rgba(0, 0, 0, 0.8);
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top: 2px solid var(--primary-start);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    color: white;
    font-weight: var(--font-weight-medium);
    z-index: 1000;
    transform: translateX(100%);
    transition: var(--transition);
    max-width: 300px;
    box-shadow: 0 4px 12px var(--shadow);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.notification.error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.notification.info {
    background: var(--primary-gradient);
}