:root {
    --primary-orange: #ff7849;
    --text-color: #2c3e50;
    --background-color: #ffffff;
    --menu-width: 280px;
    --menu-background: #f8f9fa;
    --menu-shadow: rgba(0, 0, 0, 0.1);
    --menu-header-bg: #1a1c1e;
    --menu-item-hover: rgba(255, 120, 73, 0.1);
    --menu-divider: #a7a7a9;
    --header-height: 64px;
}

.master-header {
    height: 64px;
    height: var(--header-height);
    background: white;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    padding: 0 1rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.master-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, var(--primary-orange), #e66a3e);
    opacity: 0.5;
}

.master-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.master-back-button {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    color: var(--primary-orange);
}

.master-back-button:hover {
    transform: translateX(-2px);
}

.master-back-button svg {
    width: 24px;
    height: 24px;
}

.master-page-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-left: 0.5rem;
}

.master-header-center-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-color);
    white-space: nowrap;
}

body {
    padding-top: var(--header-height);
}

.master-side-menu-group {
    margin: 1.5rem 0;
}

.master-side-menu-group-title {
    color: var(--menu-divider);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 1.5rem;
    margin: 0.5rem 0;
    position: relative;
}

.master-side-menu-group-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1.5rem;
    right: 1.5rem;
    height: 1px;
    background: linear-gradient(to right, var(--menu-divider), transparent);
    opacity: 0.3;
}

.master-side-menu-group-items {
    margin-top: 0.5rem;
}

.master-side-menu-group-items a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    font-weight: 500;
    gap: 1rem;
    font-size: 0.95rem;
}

.master-side-menu-group-items a:hover {
    background-color: var(--menu-item-hover);
    color: var(--primary-orange);
}

.master-side-menu-group-items a svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.master-side-menu-group.hidden {
    display: none;
}

.master-side-menu {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--menu-width);
    background: var(--menu-background);
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 1000;
    box-shadow: 2px 0 5px var(--menu-shadow);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: env(safe-area-inset-bottom);
}

.master-side-menu-header {
    padding: 2rem;
    background: var(--menu-header-bg);
    color: white;
    text-align: center;
    position: relative;
    flex-shrink: 0;
}

.master-side-menu-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-orange), #e66a3e);
}

.master-side-menu-user-photo {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    border: 3px solid var(--primary-orange);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.master-side-menu-user-photo:hover {
    transform: scale(1.05);
}

.master-side-menu-user-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.master-side-menu-user-full-name {
    font-size: 1.2rem;
    text-align: center;
    margin-top: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease;
    font-weight: 500;
}

.master-side-menu-user-full-name:hover {
    transform: scale(1.05);
}

.master-side-menu-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

.master-side-menu-items {
    padding: 1rem 0;
    flex-grow: 1;
}

.master-side-menu-items a {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    font-weight: 500;
    gap: 1rem;
}

.master-side-menu-items a:hover {
    background-color: var(--menu-item-hover);
    color: var(--primary-orange);
}

.master-side-menu-items a svg,
.master-side-menu-footer a svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.master-side-menu-items a.hidden {
    display: none;
}

.master-side-menu-footer {
    border-top: 1px solid var(--menu-divider);
    background: var(--menu-background);
    flex-shrink: 0;
}

.master-side-menu-footer a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    gap: 1rem;
    font-size: 0.9rem;
}

.master-side-menu-footer a:hover {
    background-color: var(--menu-item-hover);
    color: var(--primary-orange);
}

.master-side-menu-footer .version {
    font-size: 0.7rem;
    color: #64748b;
    padding: 0 1.5rem;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

.master-side-menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.master-side-menu-hamburger {
    width: 24px;
    height: 20px;
    position: relative;
}

.master-side-menu-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--primary-orange);
    position: absolute;
    transition: all 0.3s;
}

.master-side-menu-hamburger span:nth-child(1) {
    top: 0;
}

.master-side-menu-hamburger span:nth-child(2) {
    top: 9px;
}

.master-side-menu-hamburger span:nth-child(3) {
    top: 18px;
}

.master-side-menu-open .master-side-menu {
    transform: translateX(0);
}

.master-side-menu-open .master-side-menu-hamburger span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
}

.master-side-menu-open .master-side-menu-hamburger span:nth-child(2) {
    opacity: 0;
}

.master-side-menu-open .master-side-menu-hamburger span:nth-child(3) {
    transform: rotate(-45deg);
    top: 9px;
}

.master-side-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    backdrop-filter: blur(2px);
}

.master-side-menu-open .master-side-menu-overlay {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    .master-page-title {
        display: none;
    }
}