/* Conference Abstract Management System - Custom Styles */
/* Dark Theme - Styled to match Crete Conference website (https://www.creteconf.org/) */

/* Import Lato font from Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700&display=swap');

/* Dark Theme Color Variables */
:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-muted: #888888;
    --border-color: #3a3a3a;
    --accent-blue: #4a9eff;
    --accent-blue-hover: #6bb0ff;
    --accent-blue-dark: #357abd;
}

/* Base typography and layout */
body {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

main {
    flex: 1;
    background-color: var(--bg-primary);
}

footer {
    margin-top: auto;
    background-color: var(--bg-secondary);
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Lato', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

h1 {
    font-size: 2em;
    font-weight: 700;
}

h2 {
    font-size: 1.75em;
    font-weight: 700;
}

h3 {
    font-size: 1.5em;
    font-weight: 700;
}

h4 {
    font-size: 1.25em;
    font-weight: 700;
}

h5 {
    font-size: 1.1em;
    font-weight: 700;
}

p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
}

/* Cards - dark theme style */
.card {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    font-family: 'Lato', sans-serif;
    color: var(--text-primary);
}

.card-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-weight: 700;
    font-size: 1.1em;
    padding: 1rem 1.25rem;
    color: var(--text-primary);
}

.card-body {
    padding: 1.25rem;
    font-size: 16px;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.card.bg-light {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--border-color);
}

/* Tables */
.table {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    color: var(--text-primary);
}

.table th {
    background-color: var(--bg-tertiary);
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding: 0.75rem;
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.table-hover tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.table-borderless td,
.table-borderless th {
    border: none;
    color: var(--text-primary);
}

/* Badges */
.badge {
    font-weight: 400;
    font-size: 0.875em;
    padding: 0.35em 0.65em;
}

/* Buttons - dark theme */
.btn {
    font-family: 'Lato', sans-serif;
    font-weight: 400;
    font-size: 16px;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
}

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

.btn-outline-primary {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
}

.btn-secondary {
    background-color: #5a6268;
    border-color: #5a6268;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #6c757d;
    border-color: #6c757d;
    color: #fff;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
    color: #fff;
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
    color: #fff;
}

.btn-outline-secondary {
    color: #adb5bd;
    border-color: #6c757d;
    background-color: transparent;
}

.btn-outline-secondary:hover {
    background-color: #6c757d;
    border-color: #6c757d;
    color: #fff;
}

/* Alerts */
.alert {
    border-radius: 4px;
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    padding: 1rem 1.25rem;
    border: 1px solid transparent;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.2);
    border-color: rgba(23, 162, 184, 0.3);
    color: #7dd3fc;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.2);
    border-color: rgba(40, 167, 69, 0.3);
    color: #86efac;
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.2);
    border-color: rgba(255, 193, 7, 0.3);
    color: #fde047;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.2);
    border-color: rgba(220, 53, 69, 0.3);
    color: #fca5a5;
}

/* Forms */
.form-label {
    font-family: 'Lato', sans-serif;
    font-weight: 400;
    font-size: 16px;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-control,
.form-select {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 0.2rem rgba(74, 158, 255, 0.25);
    outline: 0;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-text {
    font-family: 'Lato', sans-serif;
    font-size: 0.875em;
    color: var(--text-muted);
}

.form-check-input {
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

.form-check-input:checked {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.form-check-label {
    color: var(--text-primary);
}

/* Modals */
.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-header {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-family: 'Lato', sans-serif;
}

.modal-title {
    font-weight: 700;
    font-size: 1.25em;
    color: var(--text-primary);
}

.modal-body {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.btn-close {
    filter: invert(1);
}

/* Navigation */
.navbar {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.25em;
}

.navbar-nav .nav-link {
    font-weight: 400;
    color: #fff;
    padding: 0.5rem 1rem;
}

.navbar-nav .nav-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-dark .navbar-nav .nav-link {
    color: #fff;
}

.dropdown-menu {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
}

.dropdown-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Status badges - dark theme colors */
.badge.bg-secondary {
    background-color: #6c757d !important;
    color: #fff;
}

.badge.bg-info {
    background-color: #17a2b8 !important;
    color: #fff;
}

.badge.bg-warning {
    background-color: #ffc107 !important;
    color: #000;
}

.badge.bg-success {
    background-color: #28a745 !important;
    color: #fff;
}

.badge.bg-danger {
    background-color: #dc3545 !important;
    color: #fff;
}

/* Abstract text display */
.abstract-text {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
}

/* Review cards */
.review-card {
    border-left: 4px solid var(--accent-blue);
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.review-card.accept {
    border-left-color: #28a745;
}

.review-card.reject {
    border-left-color: #dc3545;
}

.review-card.revision {
    border-left-color: #ffc107;
}

/* Links */
a {
    color: var(--accent-blue);
    text-decoration: none;
    font-family: 'Lato', sans-serif;
}

a:hover {
    color: var(--accent-blue-hover);
    text-decoration: underline;
}

.alert-link {
    color: var(--accent-blue);
    font-weight: 600;
}

.alert-link:hover {
    color: var(--accent-blue-hover);
}

/* Container - centered layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    body {
        font-size: 15px;
    }
    
    h1 {
        font-size: 1.75em;
    }
    
    h2 {
        font-size: 1.5em;
    }
    
    h3 {
        font-size: 1.25em;
    }
    
    .table-responsive {
        font-size: 15px;
    }
    
    .btn-sm {
        padding: 0.35rem 0.65rem;
        font-size: 15px;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Loading spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
    border-color: var(--text-primary);
    border-right-color: transparent;
}

/* File upload area */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 4px;
    padding: 2rem;
    text-align: center;
    background-color: var(--bg-tertiary);
    transition: all 0.3s ease;
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    color: var(--text-primary);
}

.file-upload-area:hover {
    border-color: var(--accent-blue);
    background-color: rgba(74, 158, 255, 0.1);
}

/* Statistics cards */
.stats-card {
    transition: transform 0.2s ease;
    font-family: 'Lato', sans-serif;
}

.stats-card:hover {
    transform: translateY(-2px);
}

.stats-card .card-title {
    font-size: 1em;
    font-weight: 400;
    color: var(--text-secondary);
}

.stats-card h2 {
    font-size: 2em;
    font-weight: 700;
    color: var(--text-primary);
}

/* Text utilities */
.text-muted {
    color: var(--text-muted) !important;
    font-family: 'Lato', sans-serif;
}

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

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

/* Additional style elements */
.page-title {
    font-family: 'Lato', sans-serif;
    font-weight: 700;
    font-size: 2em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-title {
    font-family: 'Lato', sans-serif;
    font-weight: 700;
    font-size: 1.5em;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Clean, professional spacing */
.mb-4 {
    margin-bottom: 2rem !important;
}

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

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

/* Footer styling */
footer {
    font-family: 'Lato', sans-serif;
    font-size: 16px;
    color: var(--text-muted);
    text-align: center;
}

footer p {
    margin: 0;
    color: var(--text-muted);
}

/* Bootstrap overrides for dark theme */
.bg-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary);
}

.bg-primary {
    background-color: #0d6efd !important;
}

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

.border-bottom {
    border-bottom-color: var(--border-color) !important;
}

.border-top {
    border-top-color: var(--border-color) !important;
}

/* Code blocks */
code {
    background-color: var(--bg-tertiary);
    color: var(--accent-blue);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
}

/* List styling */
ul, ol {
    color: var(--text-primary);
}

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

/* Small text */
small {
    color: var(--text-muted);
}

/* Lead text */
.lead {
    color: var(--text-primary);
}