/* Theme System - Extracted from working homepage implementation */

/* CSS Variables for Light, Dark, and Accessible themes */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent: #1e40af;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --gradient-start: #f8fafc;
    --gradient-end: #e2e8f0;
    --bg-card-rgb: 255, 255, 255;
}

/* Dark Mode Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --accent: #3b82f6;
    --border: #475569;
    --shadow: rgba(0, 0, 0, 0.3);
    --gradient-start: #0f172a;
    --gradient-end: #1e293b;
    --bg-card-rgb: 51, 65, 85;
}

/* Accessible High Contrast Mode */
[data-theme="accessible"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f0f0f0;
    --bg-card: #ffffff;
    --text-primary: #000000;
    --text-secondary: #333333;
    --accent: #0000ff;
    --border: #000000;
    --shadow: rgba(0, 0, 0, 0.5);
    --gradient-start: #ffffff;
    --gradient-end: #f0f0f0;
    --bg-card-rgb: 255, 255, 255;
}

/* Base styles that use CSS variables */
body {
    color: var(--text-secondary);
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    transition: all 0.3s ease;
}

/* Header and Navigation Styling */
header {
    background: rgba(var(--bg-card-rgb), 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    color: var(--accent);
}

.nav-links a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--accent);
}

/* Theme Toggle Button Styles */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    padding: 0.5rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--bg-secondary);
}

/* Card and Content Styling */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px -1px var(--shadow);
}

.card h2 {
    color: var(--accent);
}

.card h3 {
    color: var(--text-primary);
}

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

/* Project Cards */
.current-projects {
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: 0 4px 6px -1px var(--shadow);
}

.project-title {
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
}

/* Hero Section */
.hero h1 {
    color: var(--text-primary);
}

.hero .subtitle {
    color: var(--accent);
}

.hero .description {
    color: var(--text-secondary);
}

/* Buttons */
.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent);
    opacity: 0.9;
}

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

.btn-outline:hover {
    background: var(--accent);
    color: white;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-section h3 {
    color: var(--text-primary);
}

.footer-section ul li a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.footer-section ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
}

/* Form Elements */
.form-group label {
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent);
}

/* Contact specific elements */
.contact-item .icon {
    color: var(--accent);
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.professional-link {
    border: 1px solid var(--border);
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.professional-link:hover {
    background: var(--bg-primary);
    border-color: var(--accent);
}

.notice.green {
    background: #dcfce7;
    border-color: #bbf7d0;
    color: #166534;
}

.notice.blue {
    background: #dbeafe;
    border-color: #bfdbfe;
    color: #1e40af;
}

[data-theme="dark"] .notice.green {
    background: #14532d;
    border-color: #166534;
    color: #bbf7d0;
}

[data-theme="dark"] .notice.blue {
    background: #1e3a8a;
    border-color: #1e40af;
    color: #bfdbfe;
}

.success-message {
    background: #dcfce7;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
}

[data-theme="dark"] .success-message {
    background: #14532d;
    border-color: #166534;
    color: #bbf7d0;
}

[data-theme="dark"] .error-message {
    background: #7f1d1d;
    border-color: #dc2626;
    color: #fecaca;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 0.5rem;
    }
    
    .theme-toggle {
        padding: 0.25rem;
        font-size: 0.875rem;
    }
}