:root {
    box-sizing: border-box;
}

*, *::before, *::after {
    box-sizing: inherit;
}
:root {
    --primary-bg: #f0f2f5;
    --sidebar-bg: #ffffff;
    --text-color: #333;
    --text-light: #777;
    --border-color: #e0e0e0;
    --accent-color: #007bff;
    --accent-hover: #0056b3;
    --task-bg: #ffffff;
    --task-done-bg: #f9f9f9;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background-color: var(--primary-bg);
    color: var(--text-color);
    font-size: 14px;
}

.menu-toggle {
    display: none;
    align-items: center;
    gap: 6px;
    background: var(--sidebar-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 14px;
    margin: 12px;
    font-size: 15px;
    font-weight: 600;
    position: relative;
    z-index: 4;
}

.menu-overlay {
    display: none;
}

.container {
    display: flex;
    flex-wrap: wrap;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
    flex: 0 0 220px;
    min-width: 180px;
}

.sidebar .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 30px;
}

.sidebar .logo img {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.sidebar nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar nav li a {
    display: block;
    padding: 10px 15px;
    text-decoration: none;
    color: var(--text-color);
    border-radius: 5px;
    margin-bottom: 5px;
}

.sidebar nav li.active a,
.sidebar nav li a:hover {
    background-color: var(--accent-color);
    color: white;
}

.user-select-container {
    margin-top: auto;
    font-size: 12px;
    position: relative;
}

.user-mode-info {
    font-weight: 600;
    color: var(--text-color);
    margin: 5px 0 2px 0;
}

.user-mode-hint {
    font-size: 11px;
    color: #666;
    margin: 0;
}

/* Login Button */
.btn-login {
    width: 100%;
    padding: 10px 15px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background 0.2s;
}

.btn-login:hover {
    background: var(--accent-hover);
}

/* User Menu */
.user-menu {
    width: 100%;
}

.user-menu-header {
    padding: 10px;
    background: #f5f5f5;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
}

.user-menu-header:hover {
    background: #e8e8e8;
}

.user-avatar {
    font-size: 24px;
    flex-shrink: 0;
}

.user-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.user-info .username {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-info .user-balance {
    font-size: 11px;
    color: #666;
}

.dropdown-arrow {
    font-size: 10px;
    color: #666;
    transition: transform 0.2s;
}

/* User Dropdown (pops upward) */
.user-dropdown {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    margin-bottom: 5px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 -4px 12px rgba(0,0,0,0.15);
    overflow: hidden;
    z-index: 100;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 13px;
    transition: background 0.2s;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: #f5f5f5;
}


.main-content {
    flex: 1 1 360px;
    min-width: 0;
    width: 100%;
    padding: 20px 40px;
}

.main-content.landing {
    /* Background image without gradient overlay */
    background-image: url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    gap: 60px;
    padding: 60px 40px;
}

.landing .hero {
    max-width: 540px;
    background: rgba(255, 255, 255, 0.9);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 35px rgba(15, 34, 52, 0.12);
}

.landing .hero h1 {
    font-size: 32px;
    margin-top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.landing .hero h1 .btc-symbol {
    color: #f7931a;
    font-size: 36px;
    font-weight: bold;
    flex-shrink: 0;
}

.landing .hero p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.landing .hero ul {
    padding-left: 20px;
    margin: 0 0 20px 0;
}

.landing .hero li {
    margin-bottom: 8px;
}

.landing .hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
}

.btn.primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

.btn.primary:hover,
.btn.primary:focus {
    background-color: var(--accent-hover);
}

.btn.secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.btn.secondary:hover,
.btn.secondary:focus {
    background-color: rgba(0, 123, 255, 0.08);
}

.landing .highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.landing .highlights article {
    background: rgba(255, 255, 255, 0.95);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(30, 52, 74, 0.08);
}

.landing .highlights h2 {
    margin-top: 0;
    font-size: 22px;
}

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

.landing a:hover,
.landing a:focus {
    color: #004a99;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.user-stats {
    font-weight: bold;
}

.task-list-container h2 {
    margin-bottom: 20px;
}

.task-item {
    background-color: var(--task-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s;
}

.task-item.done {
    background-color: var(--task-done-bg);
    opacity: 0.7;
}

.task-item .info {
    flex-grow: 1;
}

.task-item .info h4 {
    margin: 0 0 5px 0;
}

.task-item .info p {
    margin: 0;
    font-size: 13px;
    color: var(--text-light);
}

.task-item .task-instructions {
    font-size: 13px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.task-item .task-meta {
    font-size: 12px;
    letter-spacing: 0.01em;
    text-transform: uppercase;
    color: var(--text-light);
}

.task-item .task-status {
    margin-top: 6px;
    font-size: 12px;
    color: var(--accent-color);
}

.task-item.viewing {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.15);
}

.task-item.viewing .task-status {
    color: var(--accent-hover);
}

.task-item.done .task-status {
    color: #368038;
}

.task-list-container .empty-state {
    color: var(--text-light);
    font-size: 13px;
    text-align: center;
}

.admin-form {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 15px 45px rgba(30, 52, 74, 0.12);
    max-width: 640px;
}

.admin-form h1 {
    margin-top: 0;
    margin-bottom: 10px;
}

.admin-form p.description {
    color: var(--text-light);
    font-size: 13px;
    margin-top: 0;
}

.admin-form .field {
    margin-bottom: 20px;
}

.admin-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

.admin-form input,
.admin-form textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
}

.admin-form textarea {
    min-height: 120px;
}

.admin-form .section-nav {
    font-size: 14px;
    margin: 10px 0 30px 0;
}

.admin-form .section-nav a {
    color: var(--accent-color);
    text-decoration: none;
}

.admin-form .section-nav a:hover {
    text-decoration: underline;
}

.task-management-list {
    margin-top: 20px;
}

.admin-task-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.admin-task-info {
    flex: 1;
}

.admin-task-info h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
    color: var(--text-color);
}

.admin-task-meta {
    font-size: 13px;
    color: #666;
    margin: 4px 0;
}

.admin-task-instructions {
    margin: 8px 0;
    font-size: 14px;
    line-height: 1.5;
}

.admin-task-url {
    margin: 4px 0 0 0;
    font-size: 13px;
}

.admin-task-url a {
    color: var(--accent-color);
    word-break: break-all;
}

.admin-task-actions {
    flex-shrink: 0;
}

.btn-delete-admin {
    background-color: #e74c3c;
    color: #ffffff;
    border: none;
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
}

.btn-delete-admin:hover {
    background-color: #c0392b;
}

.loading-state,
.empty-state,
.error-state {
    padding: 20px;
    text-align: center;
    color: #666;
    font-style: italic;
}

.error-state {
    color: #c0392b;
}

.admin-form .form-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.admin-form .form-actions .btn.secondary[hidden] {
    display: none;
}

.admin-form .output-area {
    margin-top: 24px;
    background: var(--task-done-bg);
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 13px;
}

.admin-form .output-area.empty {
    color: var(--text-light);
}

.task-item .actions button,
.task-item .actions a.btn-visit {
    display: inline-block;
    padding: 8px 12px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-left: 10px;
    font-size: 13px;
    text-decoration: none;
    text-align: center;
}

.task-item .actions .btn-visit {
    background-color: var(--accent-color);
    color: #ffffff;
}

.task-item .actions .btn-visit:hover {
    background-color: var(--accent-hover);
}

.task-item .actions .btn-delete {
    background-color: #e74c3c;
    color: #ffffff;
    font-size: 12px;
    padding: 6px 10px;
}

.task-item .actions .btn-delete:hover {
    background-color: #c0392b;
}

.task-item .actions .btn-more,
.task-item .actions .btn-dismiss {
    background-color: #f0f0f0;
    color: var(--text-color);
}

.task-item.viewing .btn-visit,
.task-item.done .btn-visit {
    background-color: #ccc;
    cursor: not-allowed;
    pointer-events: none; /* Disable clicks on viewed links */
}

@media (max-width: 640px) {
    body {
        font-size: 15px;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .container {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        inset: 0;
        width: 78vw;
        max-width: 320px;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        box-shadow: 15px 0 35px rgba(0, 0, 0, 0.25);
        z-index: 3;
    }

    body.menu-open .sidebar {
        transform: translateX(0);
    }

    body.menu-open .menu-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.35);
        z-index: 2;
    }

    .main-content {
        padding: 20px;
    }

    .main-content.landing {
        /* Mobile: no gradient needed */
        background-position: center;
        padding: 36px 20px;
        gap: 40px;
    }

    .landing .hero h1 {
        font-size: 26px;
        flex-wrap: wrap;
    }

    .landing .hero h1 .btc-symbol {
        font-size: 30px;
    }

    .task-item {
        padding: 16px;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .task-item .actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 8px;
    }
}

/* Coming Soon Sections */
.coming-soon-section {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
}

.coming-soon-content {
    background: var(--task-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 30px;
}

.coming-soon-content h2 {
    margin-top: 0;
    color: var(--accent-color);
    font-size: 28px;
}

.coming-soon-content > p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 30px;
}

.feature-preview,
.meanwhile,
.notify-box {
    margin: 25px 0;
    padding: 20px;
    background: var(--primary-bg);
    border-radius: 6px;
}

.feature-preview h3,
.meanwhile h3 {
    margin-top: 0;
    font-size: 18px;
    color: var(--text-color);
}

.feature-preview ul {
    list-style: none;
    padding-left: 0;
    margin: 15px 0 0 0;
}

.feature-preview li {
    padding: 8px 0;
    font-size: 15px;
}

.meanwhile p {
    margin: 10px 0 0 0;
    font-size: 15px;
}

.notify-box {
    background: #e3f2fd;
    border-left: 4px solid var(--accent-color);
    text-align: center;
}

.notify-box p {
    margin: 8px 0;
    font-size: 15px;
}

.inline-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.inline-link:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .coming-soon-content {
        padding: 20px;
    }
    
    .coming-soon-content h2 {
        font-size: 24px;
    }
    
    .feature-preview,
    .meanwhile,
    .notify-box {
        padding: 15px;
    }
}

/* PTC Task Animation */
.task-item.moving-to-bottom {
    transition: transform 0.5s ease-in-out, opacity 0.3s ease-in-out;
}

.task-item.completed-but-not-moved {
    opacity: 0.7;
    background-color: var(--task-done-bg);
}

.task-item.completed-but-not-moved .btn-visit {
    background: #6c757d;
    cursor: not-allowed;
}