/* ==========================================================================
   Design Tokens & Variables
   ========================================================================== */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b80;
    --border-color: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-primary: #0d9488; /* Teal */
    --accent-hover: #14b8a6;
    --accent-light: rgba(13, 148, 136, 0.15);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(13, 148, 136, 0.25);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff80;
    --border-color: #e2e8f0;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent-primary: #0f766e;
    --accent-hover: #0d9488;
    --accent-light: rgba(15, 118, 110, 0.1);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-glow: 0 0 15px rgba(15, 118, 110, 0.15);
}

/* ==========================================================================
   Base Elements & Layout
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--bg-secondary);
}

*::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

*::-webkit-scrollbar-thumb {
    background-color: var(--accent-primary);
    border-radius: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* App Container Layout */
.app-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    gap: 2rem;
    padding: 2rem;
}

@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr;
        padding: 1rem;
        gap: 1.5rem;
    }
}

/* ==========================================================================
   Sidebar Styling
   ========================================================================== */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-light) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

.avatar-container {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    padding: 4px;
    background: linear-gradient(135deg, var(--accent-primary), transparent);
    box-shadow: var(--shadow-glow);
    z-index: 1;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    background-color: var(--bg-secondary);
}

.profile-name {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 0.25rem;
    z-index: 1;
    position: relative;
}

.profile-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    z-index: 1;
    position: relative;
}

.profile-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    z-index: 1;
    position: relative;
}

.institution {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-light);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 1;
    position: relative;
}

/* Contact Info Card */
.contact-info {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.contact-info ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    font-size: 0.9rem;
}

.contact-info i {
    color: var(--accent-primary);
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    margin-top: 3px;
}

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

.contact-info a:hover {
    color: var(--accent-hover);
}

/* Navigation */
.sidebar-nav {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem 1rem;
    box-shadow: var(--shadow-md);
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: var(--text-primary);
    background-color: var(--accent-light);
    transform: translateX(5px);
}

.sidebar-nav a.active {
    border-left: 3px solid var(--accent-primary);
}

/* ==========================================================================
   Main Content Layout & General Cards
   ========================================================================== */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.content-section {
    scroll-margin-top: 2rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border-color), transparent);
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.mt-4 {
    margin-top: 2rem;
}

/* ==========================================================================
   Timeline component (Education / Experience)
   ========================================================================== */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.timeline-item {
    position: relative;
}

.timeline-badge {
    position: absolute;
    left: calc(-2rem - 18px);
    top: 24px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    border: 4px solid var(--bg-primary);
    box-shadow: var(--shadow-md);
    transition: background var(--transition-normal);
}

.timeline-item:hover .timeline-badge {
    background: var(--accent-hover);
}

.timeline-date {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-primary);
    background: var(--accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.timeline-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Admin Card Specifics */
.card-admin {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.admin-icon {
    font-size: 2rem;
    color: var(--accent-primary);
    background: var(--accent-light);
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-details h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-primary {
    background: var(--accent-light);
    color: var(--accent-hover);
    border: 1px solid var(--accent-primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   Projects Grid & Cards
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.project-badge {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.badge-intl {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-nat {
    background: rgba(107, 114, 128, 0.15);
    color: #9ca3af;
    border: 1px solid rgba(107, 114, 128, 0.3);
}

.badge-tubitak {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.project-role {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.project-org {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.filter-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

/* ==========================================================================
   Theses Section
   ========================================================================== */
.theses-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.thesis-card {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.thesis-icon {
    font-size: 1.8rem;
    color: var(--accent-primary);
    background: var(--accent-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.thesis-info h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.student-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.thesis-inst {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ==========================================================================
   Publications Section
   ========================================================================== */
.publication-search {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

#pub-search-input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.8rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

#pub-search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.pub-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.pub-tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.pub-tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.pub-tab-btn.active {
    color: #fff;
    background: var(--accent-primary);
}

.pub-tab-content {
    display: none;
}

.pub-tab-content.active {
    display: block;
}

.pub-list {
    padding-left: 1.5rem;
}

.pub-list li {
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.pub-list li strong {
    color: var(--text-primary);
}

.pub-list li em {
    color: var(--accent-primary);
}

/* ==========================================================================
   Workshops Section
   ========================================================================== */
.workshops-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.workshop-card {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.workshop-badge {
    background: var(--accent-light);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    flex-shrink: 0;
}

.workshop-info h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
}

.workshop-role {
    font-size: 0.9rem;
    font-weight: 500;
}

.workshop-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Controls Panel & Footer
   ========================================================================== */
.controls-panel {
    position: fixed;
    right: 2rem;
    top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    z-index: 100;
}

.controls-panel button {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.controls-panel button:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: scale(1.05);
}

.footer {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    max-width: 1400px;
    margin: 2rem auto 0;
}

/* ==========================================================================
   Print and PDF Export Optimizations
   ========================================================================== */
@media print {
    .no-print,
    .controls-panel,
    .sidebar-nav,
    .filter-bar,
    .pub-tabs,
    .publication-search {
        display: none !important;
    }

    body {
        background: #fff !important;
        color: #000 !important;
        font-size: 11pt !important;
    }

    .app-container {
        display: block !important;
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }

    .sidebar {
        display: flex !important;
        flex-direction: row !important;
        align-items: center !important;
        justify-content: space-between !important;
        border-bottom: 2px solid #ccc !important;
        padding-bottom: 20px !important;
        margin-bottom: 30px !important;
    }

    .profile-card {
        border: none !important;
        background: none !important;
        padding: 0 !important;
        box-shadow: none !important;
        text-align: left !important;
        display: flex !important;
        align-items: center !important;
        gap: 20px !important;
    }

    .avatar-container {
        width: 100px !important;
        height: 100px !important;
        margin: 0 !important;
        box-shadow: none !important;
        background: none !important;
        padding: 0 !important;
    }

    .contact-info {
        background: none !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        text-align: right !important;
    }

    .contact-info h3 {
        display: none !important;
    }

    .contact-info ul {
        gap: 5px !important;
        align-items: flex-end !important;
    }

    .contact-info li {
        font-size: 8pt !important;
    }

    .contact-info i {
        display: none !important;
    }

    .main-content {
        gap: 20px !important;
    }

    .content-section {
        page-break-inside: avoid !important;
    }

    .card {
        background: none !important;
        border: none !important;
        padding: 0 !important;
        box-shadow: none !important;
    }

    .timeline {
        border-left: 1px solid #ccc !important;
        gap: 15px !important;
    }

    .timeline-badge {
        border: 2px solid #fff !important;
        background: #000 !important;
        color: #fff !important;
        width: 24px !important;
        height: 24px !important;
        left: calc(-2rem - 13px) !important;
        top: 10px !important;
    }

    .timeline-date {
        background: #eee !important;
        color: #000 !important;
        border: 1px solid #ccc !important;
    }

    .projects-grid {
        display: block !important;
    }

    .project-card {
        border-bottom: 1px solid #eee !important;
        padding: 10px 0 !important;
        page-break-inside: avoid !important;
    }

    .project-badge, .project-role {
        display: none !important;
    }

    .pub-tab-content {
        display: block !important;
        margin-bottom: 25px !important;
        page-break-inside: avoid !important;
    }

    .pub-tab-content::before {
        content: attr(id) !important;
        font-family: var(--font-heading) !important;
        font-size: 1.2rem !important;
        font-weight: bold !important;
        display: block !important;
        margin-bottom: 10px !important;
        border-bottom: 1px solid #ccc !important;
        padding-bottom: 5px !important;
        text-transform: uppercase !important;
    }

    /* Mapping IDs to custom titles in CSS print */
    #intl-journal::before { content: "Publications in International Refereed Journals" !important; }
    #nat-journal::before { content: "Publications in National Refereed Journals" !important; }
    #intl-conference::before { content: "Papers Presented at International Scientific Conferences" !important; }
    #nat-conference::before { content: "Papers Presented at National Scientific Conferences" !important; }
    #books::before { content: "Books & Book Chapters" !important; }

    .pub-list {
        padding-left: 20px !important;
    }

    .pub-list li {
        font-size: 9pt !important;
        margin-bottom: 5px !important;
        color: #333 !important;
    }

    .pub-list li strong {
        color: #000 !important;
    }

    .pub-list li em {
        color: #000 !important;
        font-style: italic !important;
    }
}