/* CSS Variables for Light and Dark Modes */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #000000;
    --text-secondary: #666666;
    --border-color: #ddd;
    --input-border: #ccc;
    --form-border: #f1f1f1;
    --button-bg: #4CAF50;
    --button-hover: #45a049;
    --cancel-bg: #f44336;
    --table-hover: #f1f1f1;
    --menu-bg: #333;
    --menu-hover: #777;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1e1e1e;
        --bg-secondary: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --border-color: #444;
        --input-border: #555;
        --form-border: #333;
        --button-bg: #45a049;
        --button-hover: #3d8b40;
        --cancel-bg: #d32f2f;
        --table-hover: #2d2d2d;
        --menu-bg: #1a1a1a;
        --menu-hover: #444;
    }
}

/* Dark Mode Class (for manual toggle) */
body.dark-mode {
    --bg-primary: #1e1e1e;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #444;
    --input-border: #555;
    --form-border: #333;
    --button-bg: #45a049;
    --button-hover: #3d8b40;
    --cancel-bg: #d32f2f;
    --table-hover: #2d2d2d;
    --menu-bg: #1a1a1a;
    --menu-hover: #444;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html, body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: Arial, sans-serif;
}

/* Link Styles */
a {
    color: #0066cc;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:visited {
    color: #663399;
}

a:hover {
    color: #0052a3;
    text-decoration: underline;
}

a:active {
    color: #004080;
}

/* Dark Mode Link Styles */
@media (prefers-color-scheme: dark) {
    a {
        color: #66b3ff;
    }
    
    a:visited {
        color: #b399ff;
    }
    
    a:hover {
        color: #99ccff;
        text-decoration: underline;
    }
    
    a:active {
        color: #4d94ff;
    }
}

/* Manual Dark Mode Override for Links */
body.dark-mode a {
    color: #66b3ff;
}

body.dark-mode a:visited {
    color: #b399ff;
}

body.dark-mode a:hover {
    color: #99ccff;
    text-decoration: underline;
}

body.dark-mode a:active {
    color: #4d94ff;
}

/* Menu Links Override */
.scrollmenu a {
    color: var(--text-primary);
    text-decoration: none;
}

.scrollmenu a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

form {
    border: 3px solid var(--form-border);
    background-color: var(--bg-secondary);
    border-radius: 5px;
    padding: 20px;
}

input[type=text], input[type=password] {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid var(--input-border);
    box-sizing: border-box;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 4px;
}

button {
    background-color: var(--button-bg);
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    cursor: pointer;
    width: 150px;
    border-radius: 4px;
    font-weight: 500;
}

button:hover {
    background-color: var(--button-hover);
}

/* Dark Mode Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background-color: var(--button-bg);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}
textarea {
    width: 100%;
    max-width: 600px;
    height: 120px;
    border: 3px solid var(--input-border);
    padding: 5px;
    font-family: Tahoma, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 4px;
    box-sizing: border-box;
}
.cancelbtn {
    width: auto;
    padding: 10px 18px;
    background-color: var(--cancel-bg);
}

.imgcontainer {
    text-align: center;
    margin: 24px 0 12px 0;
}

img.avatar {
    width: 140px;
    border-radius: 50%;
    display: block;
    margin: auto;
}

.container {
    padding: 16px;
    max-width: 500px;
    margin: 0 auto;
}

span.psw {
    display: block;
    padding-top: 16px;
    text-align: right;
}

/* Mobile Responsive Styles */
@media screen and (max-width: 768px) {
    .container {
        padding: 12px;
    }
    
    button {
        width: 100%;
        margin: 10px 0;
    }
    
    span.psw {
        padding-top: 10px;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
    
    form {
        padding: 15px;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 8px;
    }
    
    button {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    input[type=text], input[type=password] {
        padding: 10px 15px;
        font-size: 16px;
    }
    
    .cancelbtn {
        width: 100%;
    }
    
    .theme-toggle {
        top: 8px;
        right: 8px;
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    form {
        padding: 12px;
        border: 2px solid var(--form-border);
    }
    
    .imgcontainer {
        margin: 16px 0 8px 0;
    }
    
    img.avatar {
        width: 100px;
    }
}
div.scrollmenu {
    background-color: var(--menu-bg);
    overflow: auto;
    white-space: nowrap;
    padding: 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

div.scrollmenu a {
    display: inline-block;
    color: var(--text-primary);
    text-align: center;
    padding: 14px;
    text-decoration: none;
    font-weight: 500;
}

div.scrollmenu a:hover {
    background-color: var(--menu-hover);
}

@media screen and (max-width: 480px) {
    div.scrollmenu {
        padding: 0;
    }
    
    div.scrollmenu a {
        padding: 10px;
        font-size: 14px;
    }
}
#myTable {
    border-collapse: collapse;
    width: 100%;
    border: 1px solid var(--border-color);
    font-size: 16px;
    background-color: var(--bg-secondary);
}

#myTable th {
    text-align: left;
    padding: 12px;
    background-color: var(--button-bg);
    color: white;
    font-weight: bold;
}

#myTable td {
    text-align: left;
    padding: 12px;
    color: var(--text-primary);
}

#myTable tr {
    border-bottom: 1px solid var(--border-color);
}

#myTable tr.header {
    background-color: var(--button-bg);
}

#myTable tr:hover {
    background-color: var(--table-hover);
}

@media screen and (max-width: 768px) {
    #myTable {
        font-size: 14px;
    }
    
    #myTable th, #myTable td {
        padding: 8px;
    }
}

@media screen and (max-width: 480px) {
    #myTable {
        font-size: 12px;
    }
    
    #myTable th, #myTable td {
        padding: 6px;
    }
}

.select-style {
    border: 1px solid var(--input-border);
    width: 120px;
    border-radius: 3px;
    overflow: hidden;
    background-color: var(--bg-primary);
    background-image: url("img/icon-select.png");
    background-repeat: no-repeat;
    background-position: 90% 50%;
}

.select-style select {
    padding: 5px 8px;
    width: 130%;
    border: none;
    box-shadow: none;
    background: transparent;
    background-image: none;
    -webkit-appearance: none;
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

.select-style select:focus {
    outline: 2px solid var(--button-bg);
    outline-offset: -2px;
}

@media screen and (max-width: 480px) {
    .select-style {
        width: 100%;
    }
    
    .select-style select {
        width: 100%;
    }
}

/* ===== MODERN UI COMPONENTS ===== */

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

@media screen and (max-width: 768px) {
    .container {
        padding: 15px;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 10px;
    }
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    margin: 0;
    font-size: 28px;
    color: var(--text-primary);
}

@media screen and (max-width: 768px) {
    .page-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .page-header h1 {
        font-size: 24px;
    }
}

@media screen and (max-width: 480px) {
    .page-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .page-header h1 {
        font-size: 20px;
    }
}

/* Card */
.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

@media screen and (max-width: 480px) {
    .card {
        padding: 15px;
        margin-bottom: 15px;
    }
}

/* Modern Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--button-hover);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: #888;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

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

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

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

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

.btn-outline-danger {
    border: 2px solid #e74c3c;
    color: #e74c3c;
    background-color: transparent;
}

.btn-outline-danger:hover {
    background-color: #e74c3c;
    color: white;
}

.btn-outline-success {
    border: 2px solid #27ae60;
    color: #27ae60;
    background-color: transparent;
}

.btn-outline-success:hover {
    background-color: #27ae60;
    color: white;
}

.btn-outline-info {
    border: 2px solid #3498db;
    color: #3498db;
    background-color: transparent;
}

.btn-outline-info:hover {
    background-color: #3498db;
    color: white;
}

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-xs {
    padding: 6px 12px;
    font-size: 12px;
}

@media screen and (max-width: 768px) {
    .btn {
        padding: 10px 16px;
    }
}

@media screen and (max-width: 480px) {
    .btn {
        padding: 10px 14px;
        font-size: 13px;
    }
}

/* Forms */
.form-modern {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-input,
.form-input:focus {
    padding: 12px 16px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--button-bg);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

@media screen and (max-width: 480px) {
    .form-input {
        padding: 11px 14px;
        font-size: 16px;
    }
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.form-actions.mt-3 {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

@media screen and (max-width: 480px) {
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

/* Alerts */
.alert {
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@media (prefers-color-scheme: dark) {
    .alert-success {
        background-color: #1e5631;
        color: #a8d5a8;
    }
    
    .alert-error {
        background-color: #5a1a1a;
        color: #ff9999;
    }
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background-color: #95a5a6;
    color: white;
}

.badge-success {
    background-color: #27ae60;
}

.badge-secondary {
    background-color: #95a5a6;
}

/* Modern Table */
.table-responsive {
    overflow-x: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.table-modern {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-secondary);
}

.table-modern thead {
    background-color: var(--button-bg);
    color: white;
}

.table-modern th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}

.table-modern td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.table-modern tbody tr:last-child td {
    border-bottom: none;
}

.col-id {
    width: 8%;
}

.col-name {
    width: 40%;
}

.col-link {
    width: 35%;
}

.col-country {
    width: 12%;
}

.col-actions {
    width: 20%;
}

.col-options {
    width: 40%;
}

.col-status {
    width: 15%;
}

.col-toggle {
    width: 15%;
}

@media screen and (max-width: 768px) {
    .form-group-row {
        grid-template-columns: 1fr;
    }
}

.link-preview {
    word-break: break-all;
}

@media screen and (max-width: 768px) {
    .table-modern th,
    .table-modern td {
        padding: 10px 12px;
        font-size: 13px;
    }
    
    .btn-xs {
        padding: 4px 8px;
        font-size: 11px;
    }
}

@media screen and (max-width: 480px) {
    .table-modern th,
    .table-modern td {
        padding: 8px 10px;
        font-size: 12px;
    }
    
    .col-id,
    .col-name,
    .col-link,
    .col-actions,
    .col-options,
    .col-status,
    .col-toggle {
        width: auto;
    }
}

/* Confirm Card */
.confirm-card {
    text-align: center;
}

.confirm-card h3 {
    margin: 0 0 10px 0;
    color: var(--text-primary);
}

.confirm-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.button-group {
    display: flex;
    gap: 12px;
    justify-content: center;
}

@media screen and (max-width: 480px) {
    .button-group {
        flex-direction: column;
    }
}

/* Code Section */
.code-section {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.code-block {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.code-block h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 16px;
}

.code-block p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.code-textarea {
    padding: 12px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 12px;
    min-height: 80px;
    resize: vertical;
    word-break: break-all;
}

/* Back Button */
.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 2px solid var(--button-bg);
    border-radius: 6px;
    color: var(--button-bg);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background-color: var(--button-bg);
    color: white;
}

.back-icon {
    font-size: 16px;
}

/* Nav Links */
.nav-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.nav-link {
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--button-bg);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background-color: var(--button-bg);
    color: white;
}

@media screen and (max-width: 480px) {
    .nav-links {
        flex-direction: column;
    }
    
    .nav-link {
        text-align: center;
    }
}

/* Page Actions */
.page-actions {
    display: flex;
    gap: 20px;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

@media screen and (max-width: 768px) {
    .page-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    .page-actions .btn {
        width: 100%;
    }
    
    .nav-links {
        width: 100%;
        flex-direction: column;
    }
    
    .nav-link {
        width: 100%;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 16px;
    margin: 0;
}

/* Smooth transitions */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Modern Campaigns Container with Sidebar */
.campaigns-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    position: relative;
}

.sidebar-toggle {
    display: none;
    position: fixed;
    top: 80px;
    left: 20px;
    z-index: 999;
    background: var(--primary, #4CAF50);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    padding: 0;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
}

.sidebar-toggle:hover {
    background: var(--primary-hover, #45a049);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    transform: scale(1.05);
}

/* Campaigns Sidebar */
.campaigns-sidebar {
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    height: fit-content;
    position: sticky;
    top: 100px;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-secondary) 100%);
}

.sidebar-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.sidebar-close {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background-color 0.2s;
}

.sidebar-close:hover {
    background: var(--border-color);
}

.sidebar-content {
    overflow-y: auto;
    overflow-x: hidden;
    max-height: calc(100vh - 200px);
    padding: 8px;
}

.sidebar-content::-webkit-scrollbar {
    width: 6px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Campaigns List */
.campaigns-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.campaign-item {
    margin-bottom: 8px;
}

.campaign-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    background: transparent;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.campaign-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary, #4CAF50);
    transform: scaleY(0);
    transform-origin: center;
    transition: transform 0.25s ease;
}

.campaign-link:hover {
    background: var(--bg-tertiary, rgba(76, 175, 80, 0.1));
}

.campaign-link.active {
    background: rgba(76, 175, 80, 0.15);
    color: var(--primary, #4CAF50);
    font-weight: 600;
}

.campaign-link.active::before {
    transform: scaleY(1);
}

.campaign-info {
    flex: 1;
    min-width: 0;
}

.campaign-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.campaign-link.active .campaign-name {
    color: var(--primary, #4CAF50);
}

.campaign-id {
    font-size: 12px;
    color: var(--text-secondary);
    opacity: 0.7;
}

.campaign-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    margin-left: 10px;
    transition: all 0.25s ease;
}

.campaign-link.active .campaign-indicator {
    background: var(--primary, #4CAF50);
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.5);
}

.campaign-item.empty .campaign-empty {
    text-align: center;
    padding: 20px 10px;
    color: var(--text-secondary);
    font-size: 13px;
    opacity: 0.6;
}

/* Main Content Area */
.campaigns-main {
    flex: 1;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .campaigns-container {
        grid-template-columns: 1fr;
    }
    
    .campaigns-sidebar {
        display: none;
        position: fixed;
        left: 0;
        top: 80px;
        right: 0;
        bottom: 0;
        width: 280px;
        height: calc(100vh - 80px);
        max-height: none;
        border-radius: 0;
        z-index: 998;
        box-shadow: 2px 0 16px rgba(0,0,0,0.15);
    }
    
    .campaigns-sidebar.open {
        display: flex;
    }
    
    .sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .campaigns-sidebar {
        width: 100%;
    }
    
    .sidebar-close {
        display: flex;
    }
}