/* ============================================
   GLOBAL STYLES - DARK THEME
   ============================================ */

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

:root {
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --primary-light: #33e0ff;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --card-bg: #1e293b;
    --card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-color: #334155;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.8);
    --transition: all 0.3s ease;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-darker);
    color: var(--text-primary);
    height: 100vh;
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #020617 100%);
    padding: 20px;
}

.login-card {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    animation: slideUp 0.5s ease;
    border: 1px solid var(--border-color);
}

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

.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-darker);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    margin: 0 auto 15px;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.logo-section h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
}

.logo-section p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-dark);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
    background: var(--card-bg);
}

.error-message {
    color: var(--danger-color);
    font-size: 13px;
    margin-top: -10px;
    display: none;
}

.error-message.show {
    display: block;
}

.login-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #64748b;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-block {
    width: 100%;
}

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

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-mini {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--bg-darker);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 20px;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.app-title {
    font-size: 24px;
    font-weight: 600;
    flex: 1;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info span {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav-tabs {
    display: flex;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    max-width: 1400px;
    margin: 0 auto;
    overflow-x: auto;
    padding: 0 20px;
}

.tab-btn {
    background: none;
    border: none;
    padding: 16px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    box-shadow: 0 3px 0 -1px var(--primary-color);
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
    min-height: calc(100vh - 200px);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   DASHBOARD
   ============================================ */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.stat-card:hover {
    background: var(--card-hover);
    transform: translateY(-4px);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.15);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
    font-weight: 500;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.dashboard-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.dashboard-section h2 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.recent-list {
    display: grid;
    gap: 12px;
}

.recent-item {
    padding: 15px;
    background: var(--bg-dark);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.recent-item-client {
    font-weight: 500;
}

.recent-item-time {
    color: var(--text-secondary);
    font-size: 12px;
}

.recent-item-staff {
    color: var(--primary-color);
    font-weight: 500;
}

.recent-item-status {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-ongoing {
    background-color: rgba(0, 212, 255, 0.15);
    color: var(--primary-color);
}

.status-completed {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
}

.status-cancelled {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
}

/* ============================================
   FORMS
   ============================================ */

.form-container {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.form-container h2 {
    margin-bottom: 25px;
    font-size: 20px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-dark);
    color: var(--text-primary);
    transition: var(--transition);
}

.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(0, 212, 255, 0.15);
    background: var(--card-bg);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

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

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-start;
}

.message {
    padding: 12px 15px;
    border-radius: 6px;
    margin-top: 15px;
    display: none;
    font-size: 14px;
    border: 1px solid;
}

.message.show {
    display: block;
}

.message.success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border-color: var(--success-color);
}

.message.error {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--danger-color);
    border-color: var(--danger-color);
}

/* ============================================
   FILTERS & LOGS
   ============================================ */

.filter-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.filter-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 20px;
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    font-weight: 500;
    font-size: 13px;
}

.filter-group input,
.filter-group select {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-dark);
    color: var(--text-primary);
}

.logs-container {
    display: grid;
    gap: 15px;
}

.logs-list {
    display: grid;
    gap: 15px;
}

.log-item {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    align-items: center;
    transition: var(--transition);
}

.log-item:hover {
    background: var(--card-hover);
    border-left-color: var(--primary-light);
}

.log-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.log-field-label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
}

.log-field-value {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
}

.log-actions {
    display: flex;
    gap: 10px;
    grid-column: 1 / -1;
    margin-top: 10px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   STAFF
   ============================================ */

.staff-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.staff-form-container {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.staff-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    align-items: end;
}

.form-row input {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-dark);
    color: var(--text-primary);
}

.form-row button {
    align-self: flex-end;
}

.staff-list {
    display: grid;
    gap: 12px;
}

.staff-item {
    padding: 15px;
    background: var(--bg-dark);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.staff-item:hover {
    background: var(--card-hover);
}

.staff-item h4 {
    margin-bottom: 3px;
    font-size: 14px;
    color: var(--text-primary);
}

.staff-count {
    background: var(--primary-color);
    color: var(--bg-darker);
    padding: 8px 14px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 13px;
}

/* ============================================
   MODAL
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: block;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 10% auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
}

.close:hover {
    color: var(--primary-color);
}

.modal-body {
    display: grid;
    gap: 15px;
    margin-top: 20px;
}

.modal-field {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 15px;
}

.modal-field-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.modal-field-value {
    color: var(--text-primary);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 30px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .app-title {
        font-size: 18px;
    }

    .nav-tabs {
        overflow-x: auto;
        padding: 0;
    }

    .tab-btn {
        padding: 12px 15px;
        font-size: 12px;
    }

    .main-content {
        padding: 15px 10px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .filter-controls {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .log-item {
        grid-template-columns: 1fr;
    }

    .modal-field {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.page {
    display: none;
}

.page.active {
    display: block;
}

.hidden {
    display: none;
}

.text-center {
    text-align: center;
}

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

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.empty-state-text {
    font-size: 16px;
    margin-bottom: 20px;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

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

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

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    max-width: 400px;
    z-index: 9999;
    transition: bottom 0.3s ease;
    pointer-events: none;
}

.toast.show {
    bottom: 30px;
    pointer-events: auto;
}

.toast-success {
    border-left-color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.toast-error {
    border-left-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.toast-info {
    border-left-color: var(--primary-color);
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
}