/* Layout and Grid System */
.studio-container {
    display: grid;
    grid-template-areas:
        "header header"
        "sidebar main";
    grid-template-rows: 60px 1fr;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
    max-width: 100vw;
    overflow-x: hidden;
}

/* Collapsed sidebar state */
.studio-container.sidebar-collapsed {
    grid-template-areas:
        "header header"
        "main main";
    grid-template-columns: 1fr;
    transition: grid-template-columns 0.3s ease;
}

.studio-container.sidebar-collapsed .sidebar {
    display: none;
}

.studio-container.sidebar-collapsed .preview-panel {
    display: none;
}

.studio-container.sidebar-collapsed .main-area {
    width: 100%;
    max-width: 100%;
}

/* Header */
.header {
    grid-area: header;
    background: var(--tertiary-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 18px;
    color: var(--accent-color);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #f093fb 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.header-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex: 1 1 auto;
    min-width: 260px;
    flex-wrap: wrap;
}

.header-primary-group,
.header-secondary-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-primary-group {
    flex: 1 1 auto;
    min-width: 260px;
    gap: 20px;
    flex-wrap: wrap;
}

.header-primary-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    row-gap: 8px;
}

.header-menus {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.header-secondary-group {
    margin-left: auto;
    flex-shrink: 0;
    gap: 16px;
}

.dropdown {
    position: relative;
}

.dropdown > .btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
}

.dropdown > .btn:hover,
.dropdown[data-dropdown-open] > .btn {
    background: var(--tertiary-bg);
    border-color: var(--accent-color);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 220px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.15);
    padding: 10px;
    display: none;
    flex-direction: column;
    z-index: 50;
}

.dropdown-menu button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
    text-align: left;
    cursor: pointer;
    transition: background var(--animation-speed), color var(--animation-speed);
}

.dropdown-menu button:hover {
    background: var(--tertiary-bg);
    color: var(--accent-color);
}

.dropdown[data-dropdown-open] .dropdown-menu {
    display: flex;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.workspace-mode-toggle::after {
    content: attr(data-mode-label);
    margin-left: auto;
    font-weight: 600;
    color: var(--accent-color);
}

/* Sidebar Toggle */
.sidebar-toggle-header {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all var(--animation-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
}

.sidebar-toggle-header:hover {
    background: var(--tertiary-bg);
    color: var(--accent-color);
}

.sidebar-toggle-icon {
    transition: transform var(--animation-speed);
    display: inline-block;
}

.studio-container.sidebar-collapsed .sidebar-toggle-icon {
    transform: rotate(180deg);
}

/* Main Editor Area */
.main-area {
    grid-area: main;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    height: calc(100vh - 60px);
    max-height: calc(100vh - 60px);
    scroll-behavior: smooth;
}

.editor-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--secondary-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.editor-title {
    font-size: 16px;
    font-weight: 600;
}

.editor-actions {
    display: flex;
    gap: 8px;
}

.editor-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow-y: visible;
    position: relative;
}

/* Preview Panel */
.preview-panel {
    display: flex;
    grid-area: preview;
    background: var(--secondary-bg);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
}

.preview-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--secondary-bg);
}

.preview-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.preview-content {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
}