:root {
    --primary: #0061fe;
    --primary-light: #4d8ffe;
    --success: #00c851;
    --warning: #ffbb33;
    --danger: #ff4444;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-800: #343a40;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    direction: rtl;
    text-align: right;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Styles */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-300);
}

.app-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-title svg {
    color: var(--primary);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-direction: row-reverse;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
}

#user-email {
    font-size: 0.85rem;
    color: var(--gray-800);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.logout-btn {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0;
    transition: var(--transition);
}

.logout-btn:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

/* Login Styles */
.login-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #f5f7fa;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.login-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.login-card .app-title {
    justify-content: center;
    margin-bottom: 1rem;
}

.login-message {
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.email-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 1rem;
    margin-bottom: 1rem;
    direction: rtl;
    text-align: right;
}

.email-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 97, 254, 0.1);
}

.password-input-container {
    position: relative;
    margin-bottom: 1rem;
}

.password-input-container .email-input {
    margin-bottom: 0;
    padding-left: 3rem;
}

.password-toggle {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 0.25rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.password-toggle:hover {
    color: var(--gray-800);
    background-color: var(--gray-100);
}

.password-toggle:focus {
    outline: none;
    color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 97, 254, 0.1);
}

.email-signin-btn {
    width: 100%;
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.email-signin-btn:hover {
    background-color: var(--primary-light);
}

.email-signin-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-status {
    background-color: var(--gray-100);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.login-status.success {
    background-color: rgba(0, 200, 81, 0.1);
    color: var(--success);
}

.login-status.error {
    background-color: rgba(255, 68, 68, 0.1);
    color: var(--danger);
}

.login-footer {
    margin-top: 1.5rem;
    font-size: 0.8rem;
    color: var(--gray-800);
}

/* Password Change Modal Styles */
.password-change-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #f5f7fa;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.password-change-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 2rem;
    max-width: 450px;
    width: 90%;
    text-align: center;
}

.password-change-message {
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    text-align: center;
    line-height: 1.5;
}

.password-change-form {
    margin-bottom: 1.5rem;
}

/* Unauthorized Access Styles */
.unauthorized-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #f5f7fa;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.unauthorized-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 3rem 2rem;
    max-width: 500px;
    width: 90%;
    text-align: center;
    border: 2px solid var(--danger);
}

.unauthorized-icon {
    color: var(--danger);
    margin-bottom: 1.5rem;
}

.unauthorized-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--danger);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.unauthorized-message {
    font-size: 1.1rem;
    color: var(--gray-800);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.logout-btn-unauthorized {
    background-color: var(--danger);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.logout-btn-unauthorized:hover {
    background-color: #d32f2f;
    transform: translateY(-2px);
}

/* Form Styles */
.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 97, 254, 0.1);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-800);
}

/* Viewer Styles */
.viewer-container {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
}

.book-selection {
    padding: 15px;
    background: #f5f5f5;
    border-bottom: 1px solid var(--gray-300);
}

.viewer-toolbar {
    padding: 10px 15px;
    background: #f8f9fa;
    border-bottom: 1px solid var(--gray-300);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.viewer-toolbar > span {
    font-weight: 500;
    color: var(--gray-800);
}

.toolbar-button {
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    padding: 6px 12px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.toolbar-button:hover {
    background: var(--gray-100);
    border-color: var(--primary);
}

.toolbar-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.toolbar-button:disabled:hover {
    background: #fff;
    border-color: var(--gray-300);
}

.toolbar-button-action {
    margin-right: 15px;
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    font-weight: 500;
}

.toolbar-button-action:hover:not(:disabled) {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
}

.toolbar-button-action:disabled {
    background-color: var(--gray-400);
    border-color: var(--gray-400);
    color: var(--gray-100);
}

.page-input {
    width: 80px;
    padding: 6px 8px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius);
    text-align: center;
    font-size: 0.9rem;
}

.pdf-viewer {
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px;
    background: #f8f9fa;
    position: relative;
}

.pdf-page {
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: white;
}

/* Loading and Error Messages */
.loading-message,
.error-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    z-index: 10;
}

.error-message {
    background: rgba(220, 53, 69, 0.8);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    padding: 1.25rem 1.5rem;
    min-width: 350px;
    max-width: 500px;
    z-index: 1001;
    opacity: 0;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--danger);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-icon {
    flex-shrink: 0;
    color: var(--primary);
}

.toast-icon.success {
    color: var(--success);
}

.toast-icon.error {
    color: var(--danger);
}

.toast-message {
    font-size: 0.9rem;
    color: var(--gray-800);
}

/* Badge Styles */
.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-primary {
    background-color: rgba(0, 97, 254, 0.1);
    color: var(--primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .app-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .viewer-toolbar {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }
    
    .viewer-container {
        height: calc(100vh - 250px);
    }
    
    .login-card {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .pdf-viewer {
        padding: 10px;
    }
}

/* Scale Indicator Styles */
.scale-indicator {
    font-size: 14px;
    color: #adb5bd;
    font-weight: 500;
    min-width: 45px;
    text-align: center;
    user-select: none;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}