/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #6366f1;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --sidebar-width: 260px;
    --topbar-height: 70px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 14px;
    overflow-x: hidden;
}

/* Font Awesome e Google Fonts devem ser importados no HTML */

/* Layout Principal */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    width: 260px !important;
    height: 100vh !important;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%) !important;
    color: white !important;
    display: flex !important;
    flex-direction: column !important;
    z-index: 1000 !important;
    transition: transform 0.3s ease;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05) !important;
    overflow: hidden;
}

.sidebar-header {
    padding: 20px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    flex-shrink: 0 !important;
    position: relative;
}

.logo-sidebar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    flex: 1;
}

.logo-sidebar img {
    display: block;
    margin: 0 auto;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.logo-text h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 2px;
}

.logo-text span {
    font-size: 11px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
}

.sidebar-nav {
    flex: 1 !important;
    padding: 20px 0 !important;
    overflow-y: auto !important;
    display: flex !important;
    flex-direction: column !important;
}

.nav-item {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 12px 20px !important;
    color: rgba(255, 255, 255, 0.8) !important;
    text-decoration: none !important;
    transition: all 0.2s;
    margin: 4px 12px !important;
    border-radius: 8px !important;
    font-weight: 500 !important;
    width: auto !important;
    pointer-events: auto !important;
    cursor: pointer !important;
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.nav-item:hover {
    background: var(--sidebar-hover);
    color: white;
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--sidebar-active), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

/* Nav Group (Submenu) */
.nav-group {
    margin: 4px 12px;
    position: relative;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.nav-group-header {
    cursor: pointer !important;
    position: relative;
    user-select: none !important;
    -webkit-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    pointer-events: auto !important;
    z-index: 10;
    touch-action: manipulation;
}

.nav-group-header:hover {
    background: var(--sidebar-hover) !important;
    color: white !important;
}

.nav-arrow {
    margin-left: auto !important;
    font-size: 12px !important;
    transition: transform 0.3s ease !important;
    pointer-events: none;
}

.nav-group.active .nav-arrow {
    transform: rotate(180deg) !important;
}

.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.2s ease-out;
    margin-left: 20px;
    margin-top: 4px;
    opacity: 0;
    pointer-events: none;
    display: block !important;
}

.nav-submenu.active {
    max-height: 500px !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    display: block !important;
}

.nav-subitem {
    display: flex !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 10px 20px !important;
    color: rgba(255, 255, 255, 0.7) !important;
    text-decoration: none !important;
    transition: all 0.2s !important;
    border-radius: 6px !important;
    font-weight: 500 !important;
    font-size: 14px !important;
    margin: 2px 0 !important;
    pointer-events: auto !important;
    cursor: pointer !important;
}

.nav-subitem i {
    width: 18px;
    text-align: center;
    font-size: 14px;
}

.nav-subitem:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    color: white !important;
    transform: translateX(4px);
}

.nav-subitem.active {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    font-weight: 600 !important;
}

.sidebar-footer {
    padding: 20px !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1) !important;
    margin-top: auto !important;
    flex-shrink: 0 !important;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.user-details {
    flex: 1;
}

.user-details strong {
    display: block;
    font-size: 14px;
    margin-bottom: 2px;
}

.user-details span {
    font-size: 12px;
    opacity: 0.7;
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s;
    font-weight: 500;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* Topbar */
.topbar {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--topbar-height);
    background: white;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    z-index: 100;
    box-shadow: var(--shadow);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-color);
    cursor: pointer;
    padding: 8px;
}

.page-title h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-menu {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--bg-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.user-menu-toggle:hover {
    background: var(--border-color);
}

.user-avatar-small {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.user-name-small {
    font-weight: 500;
    color: var(--text-color);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    min-width: 250px;
    display: none;
    overflow: hidden;
}

.user-menu:hover .user-menu-dropdown {
    display: block;
}

.user-menu-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar-menu {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.user-menu-header strong {
    display: block;
    margin-bottom: 4px;
}

.user-menu-header span {
    font-size: 12px;
    opacity: 0.9;
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
}

.user-menu-item:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--topbar-height);
    padding: 30px;
    min-height: calc(100vh - var(--topbar-height));
    width: calc(100% - var(--sidebar-width));
}

/* Cards de Estatísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-icon.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.stat-icon.success {
    background: linear-gradient(135deg, var(--success-color), #34d399);
}

.stat-icon.warning {
    background: linear-gradient(135deg, var(--warning-color), #fbbf24);
}

.stat-icon.info {
    background: linear-gradient(135deg, var(--info-color), #60a5fa);
}

.stat-icon.danger {
    background: linear-gradient(135deg, var(--error-color), #f87171);
}

.stat-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-color);
    line-height: 1;
}

.stat-content p {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--success-color);
    margin-top: 8px;
}

/* Cards Gerais */
.card {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #f8fafc, white);
}

.card-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-header h2 i {
    color: var(--primary-color);
}

.card-body {
    padding: 24px;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
}

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

.table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

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

.table tbody tr {
    transition: all 0.2s;
}

.table tbody tr:hover {
    background: var(--bg-color);
    transform: scale(1.01);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-sucesso,
.badge-ativo {
    background: #d1fae5;
    color: #065f46;
}

.badge-erro {
    background: #fee2e2;
    color: #991b1b;
}

.badge-inativo {
    background: #e2e8f0;
    color: #475569;
}

.badge-suspenso {
    background: #fef3c7;
    color: #92400e;
}

.badge-parcial {
    background: #dbeafe;
    color: #1e40af;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #34d399);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-color), #f87171);
    color: white;
}

.btn-block {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label .required {
    color: var(--error-color);
    margin-left: 4px;
}

.card-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    background: var(--bg-color);
}

/* Settings Cards */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.settings-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.settings-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

.settings-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    flex-shrink: 0;
}

.settings-content {
    flex: 1;
}

.settings-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-color);
}

.settings-content p {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.settings-arrow {
    color: var(--text-light);
    font-size: 18px;
    transition: all 0.3s;
}

.settings-card:hover .settings-arrow {
    color: var(--primary-color);
    transform: translateX(4px);
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-left: 4px solid;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-color: var(--error-color);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-color: var(--success-color);
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border-color: var(--info-color);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

.login-box h1 {
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--text-color);
    text-align: center;
}

.login-box .subtitle {
    color: var(--text-light);
    margin-bottom: 30px;
    text-align: center;
}

/* Paginação */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 30px;
    padding: 25px 0;
    flex-wrap: wrap;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
    border-radius: 12px;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 14px;
    border: 2px solid var(--primary-color);
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.pagination-btn:hover:not(.disabled) {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    border-color: var(--primary-light);
}

.pagination-btn:active:not(.disabled) {
    transform: translateY(-1px) scale(1.02);
}

.pagination-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: white;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.pagination-number:hover:not(.active) {
    background: linear-gradient(135deg, #f0f4ff, #e0e7ff);
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.pagination-number.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-color: var(--primary-color);
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
    transform: scale(1.1);
    position: relative;
}

.pagination-number.active::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 12px;
    z-index: -1;
    opacity: 0.3;
    filter: blur(4px);
}

.pagination-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--bg-color);
    border-color: var(--border-color);
    color: var(--text-light);
    box-shadow: none;
}

.pagination-btn.disabled:hover {
    transform: none;
    box-shadow: none;
}

.pagination-dots {
    padding: 0 12px;
    color: var(--text-light);
    font-weight: 600;
    font-size: 16px;
    display: flex;
    align-items: center;
    height: 44px;
}

.pagination-info {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    margin-bottom: 10px;
    padding: 16px 24px;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 700;
}

.page-header p {
    color: var(--text-light);
    font-size: 16px;
}

/* Utilities */
.text-center {
    text-align: center;
}

.text-error {
    color: var(--error-color);
}

.text-muted {
    color: var(--text-light);
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* Footer */
.main-footer {
    background: white;
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    color: var(--text-light);
    font-size: 12px;
    margin-top: 50px;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .topbar {
        left: 0;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .sidebar-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .topbar {
        padding: 0 15px;
    }
    
    .main-content {
        padding: 20px 15px;
    }
    
    .user-name-small {
        display: none;
    }
    
    .chat-container {
        padding: 10px;
    }
    
    .chat-window {
        height: calc(100vh - 150px);
        min-height: 500px;
    }
    
    .message-content {
        max-width: 85%;
    }
}