/* ================= BASE ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8fafc;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Admin-specific CSS Variables */
:root {
    --manager-primary: #0891b2;
    --manager-primary-dark: #0e7490;
    --manager-secondary: #06b6d4;
    --manager-accent: #22d3ee;
    --manager-gradient: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
    --manager-light: rgba(118, 203, 224, 0.1);
    --manager-shadow: rgba(8, 145, 178, 0.3);
    --sidebar-width: 280px;
    --sidebar-padding: 2rem;
}

/* ================= HEADER ================= */
.admin-header {
    background: var(--manager-gradient);
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    z-index: 1000;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* LEFT – LOGO + NAME (ABSOLUTE LEFT) */
.header-left {
    position: absolute;
    left: 20px;
    top: 0;
    height: 80px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.brand-name {
    font-size: 16px;
    font-weight: 600;
    color: white;
}

/* CENTER – TRUE CENTER */
.header-center {
    position: absolute;
    left: 50%;
    top: 0;
    height: 80px;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.header-center h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

/* RIGHT – WELCOME + LOGOUT */
.header-right {
    position: absolute;
    right: 20px;
    top: 0;
    height: 80px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-name {
    font-size: 14px;
    color: white;
    font-weight: 600;
}

.logout-btn {
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* PROFILE DROPDOWN */
.profile-dropdown {
    position: relative;
    display: inline-block;
}

.profile-icon {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.profile-icon:hover {
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    margin-top: 10px;
    z-index: 1001;
}

.dropdown-menu.show {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    color: #2d3748;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid #e2e8f0;
}

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

.dropdown-menu a:hover {
    background: #f7fafc;
    color: var(--manager-primary);
}

/* ================= SIDEBAR ================= */
.sidebar {
    width: var(--sidebar-width);
    background: white;
    box-shadow: 4px 0 20px rgba(0,0,0,0.05);
    height: calc(100vh - 80px);
    flex-shrink: 0;
    overflow-y: auto;
    position: fixed;
    left: 0;
    top: 80px;
    z-index: 200;
}

/* ENHANCED SIDEBAR SCROLLBAR */
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f8fafc;
    border-radius: 10px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--manager-gradient);
    border-radius: 10px;
    border: 2px solid transparent;
    background-clip: content-box;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--manager-primary-dark);
}

.sidebar {
    scrollbar-width: thin;
    scrollbar-color: var(--manager-primary) #f8fafc;
}

/* SIDEBAR HEADER */
.sidebar-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-bottom: 8px;
}

.sidebar-title {
    font-size: 16px;
    color: #2563eb;
    margin: 0;
}

.sidebar-subtitle {
    font-size: 12px;
    color: #64748b;
    margin-top: 2px;
}

/* SIDEBAR MENU */
.sidebar-menu {
    padding: 2rem 0;
    list-style: none;
    margin: 0;
}

.sidebar-menu li {
    margin: 0;
}

/* ENHANCED SIDEBAR MENU ITEMS */
.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem var(--sidebar-padding);
    color: #4a5568;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
    font-weight: 500;
    font-size: 14px;
}

.sidebar-menu a:hover {
    background: #f7fafc;
    color: var(--manager-primary);
    border-left-color: var(--manager-primary);
}

.sidebar-menu a.active {
    background: var(--manager-light);
    color: var(--manager-primary);
    border-left-color: var(--manager-primary);
    font-weight: 600;
}

/* ================= CONTENT ================= */
.dashboard-content,
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    height: calc(100vh - 80px);
    margin-left: var(--sidebar-width);
    margin-top: 80px;
}

/* CONTENT HEADER */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.content-header h1 {
    margin: 0;
    color: #2d3748;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* ================= FORMS ================= */
.form-container {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    max-width: 650px;
    width: 100%;
    margin: 0 auto 2rem;
    
}

.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: #4a5568;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--manager-primary);
    box-shadow: 0 0 0 3px var(--manager-light);
}

/* ================= BUTTONS ================= */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--manager-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--manager-shadow);
}

.btn-secondary {
    background: #6b7280;
    color: white;
    margin-left: 10px;
}

.btn-secondary:hover {
    background: #4b5563;
}

.btn-edit {
    background: linear-gradient(135deg, #48bb78, #38a169);
    color: white;
    padding: 6px 12px;
    font-size: 12px;
    margin-right: 5px;
    text-decoration: none;
    border-radius: 4px;
}

.btn-edit:hover {
    background: linear-gradient(135deg, #38a169, #2f855a);
}

.btn-delete {
    background: linear-gradient(135deg, #f56565, #e53e3e);
    color: white;
    padding: 6px 12px;
    font-size: 12px;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

.btn-delete:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(245, 101, 101, 0.3);
}

/* ================= TABLES ================= */
.table-container {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
}

.managers-table {
    width: 100%;
    border-collapse: collapse;
}

.managers-table th {
    background: var(--manager-gradient);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.managers-table td {
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.managers-table tr:hover {
    background: #f7fafc;
}

.no-data {
    text-align: center;
    color: #718096;
    font-style: italic;
    padding: 2rem;
}

/* ================= FLASH MESSAGES ================= */
.flash-messages {
    margin-bottom: 2rem;
}

.flash-message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.flash-message.success {
    background: #f0fff4;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

.flash-message.error {
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #feb2b2;
}

/* ================= DASHBOARD ================= */
.page-title {
    color: #2d3748;
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.page-subtitle {
    color: #718096;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-weight: 400;
}

/* ENHANCED CARD GRID */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.card-icon.yellow { background: linear-gradient(135deg, #fbbf24, #f59e0b); }
.card-icon.blue { background: linear-gradient(135deg, #60a5fa, #3b82f6); }
.card-icon.green { background: linear-gradient(135deg, #48bb78, #38a169); }
.card-icon.orange { background: linear-gradient(135deg, #ed8936, #dd6b20); }
.card-icon.red { background: linear-gradient(135deg, #f87171, #ef4444); }
.card-icon.purple { background: linear-gradient(135deg, #f093fb, #f5576c); }
.card-icon.indigo { background: var(--manager-gradient); }

.card-info h3 {
    color: #4a5568;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.card-info span {
    color: #718096;
    font-size: 0.9rem;
}

.card-link {
    text-decoration: none;
    color: inherit;
}

/* ================= FOOTER ================= */
.main-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    height: 36px;
    background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    z-index: 9999;
}

/* ================= RESPONSIVE DESIGN ================= */
@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .dashboard-content,
    .main-content {
        margin-left: 240px;
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    .admin-header {
        padding: 1rem;
        height: 70px;
    }
    
    .dashboard-content,
    .main-content {
        height: calc(100vh - 70px);
        margin-top: 70px;
        margin-left: 0;
        padding: 1rem;
    }
    
    .header-left .brand-name {
        font-size: 1.5rem;
        padding: 0.5rem 1rem;
        border-radius: 8px;
    }
    
    .admin-name {
        display: none;
    }
    
    .sidebar {
        width: 100%;
        height: 60px;
        top: 70px;
        overflow-x: auto;
        overflow-y: hidden;
    }
    
    .sidebar-menu {
        display: flex;
        padding: 0.5rem 0;
        height: 100%;
        align-items: center;
    }
    
    .sidebar-menu a {
        min-width: 120px;
        flex-direction: column;
        gap: 0.25rem;
        text-align: center;
        padding: 0.5rem;
        border-left: none;
        border-bottom: 3px solid transparent;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .sidebar-menu a.active {
        border-left: none;
        border-bottom-color: var(--manager-primary);
    }
    
    .dashboard-content,
    .main-content {
        height: calc(100vh - 130px);
        margin-top: 130px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .card-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .admin-header {
        height: 60px;
    }
    
    .sidebar {
        height: 50px;
        top: 60px;
    }
    
    .dashboard-content,
    .main-content {
        height: calc(100vh - 110px);
        margin-top: 110px;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .card {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .form-container,
    .table-container {
        padding: 1.5rem;
    }
    
    .managers-table {
        font-size: 0.9rem;
    }
    
    .managers-table th,
    .managers-table td {
        padding: 0.75rem 0.5rem;
    }
}
/* ================= LOGIN PAGE STYLING ================= */
.login-page {
    background: var(--manager-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 450px;
    text-align: center;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-container h1 {
    color: #2d3748;
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.login-subtitle {
    color: #718096;
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.login-form {
    text-align: left;
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    color: #4a5568;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
    font-size: 0.9rem;
}

.login-form input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.login-form input:focus {
    outline: none;
    border-color: var(--manager-primary);
    box-shadow: 0 0 0 3px var(--manager-light);
    transform: translateY(-1px);
}

.login-btn {
    width: 100%;
    background: var(--manager-gradient);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--manager-shadow);
}

.login-btn:active {
    transform: translateY(0);
}

.login-links {
    margin-top: 2rem;
    text-align: center;
}

.login-links a {
    color: var(--manager-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.login-links a:hover {
    color: #0891b2;
    text-decoration: underline;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: var(--manager-gradient);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0891b2;
}

/* Dropdown Menu Styling */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 45px;
    background: white;
    min-width: 160px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    border-radius: 6px;
    z-index: 1000;
}

.dropdown-menu a {
    color: #374151;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-size: 14px;
}

.dropdown-menu a:hover {
    background: #f3f4f6;
}

.dropdown-menu.show {
    display: block;
}

/* Responsive Login Design */
@media (max-width: 480px) {
    .login-container {
        padding: 2rem 1.5rem;
        margin: 1rem;
        border-radius: 16px;
    }
    
    .login-container h1 {
        font-size: 1.8rem;
    }
    
    .login-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
}

.section-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.section-subtitle {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 20px;
}

.module-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    margin-bottom: 24px;
}

.checkbox-item {
    display: flex;
    gap: 14px;
    padding: 14px;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.25s ease;
}

.checkbox-item:not(:last-child) {
    margin-bottom: 10px;
}

.checkbox-item:hover {
    background: #f8fafc;
}

.checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 4px;
    accent-color: #0ea5e9; /* modern browsers */
}

.checkbox-content h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.checkbox-content p {
    font-size: 0.85rem;
    color: #6b7280;
    line-height: 1.4;
}

/* CTA */
.btn-large {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    border-radius: 10px;
}

/* ================= HOTEL LOGO RESPONSIVE SIZING ================= */
.hotel-logo {
    object-fit: contain;
    display: inline-block;
    vertical-align: middle;
}

/* Size-specific classes for different page types */
.hotel-logo.dashboard-size {
    height: 50px;
    width: auto;
    max-width: 150px;
}

.hotel-logo.menu-size {
    height: 70px;
    width: auto;
    max-width: 200px;
}

.hotel-logo.invoice-size {
    height: 60px;
    width: auto;
    max-width: 180px;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .hotel-logo.dashboard-size {
        height: 40px;
        max-width: 120px;
    }
    
    .hotel-logo.menu-size {
        height: 50px;
        max-width: 150px;
    }
    
    .hotel-logo.invoice-size {
        height: 45px;
        max-width: 140px;
    }
}

@media (max-width: 480px) {
    .hotel-logo.dashboard-size {
        height: 35px;
        max-width: 100px;
    }
    
    .hotel-logo.menu-size {
        height: 40px;
        max-width: 120px;
    }
    
    .hotel-logo.invoice-size {
        height: 35px;
        max-width: 110px;
    }
}