/*--------------------------------------------------------------
# Whiteboard
--------------------------------------------------------------*/

#whiteboard {
    --wb-accent: #59c2ff;
    --wb-toolbar-surface: rgba(18, 18, 21, 0.88);
    --wb-control-surface: rgba(255, 255, 255, 0.06);
    z-index: 13;
    position: fixed;
    margin: auto;
    padding: 10px;
    max-width: 100vw;
    max-height: 100vh;
    width: var(--wb-width);
    height: var(--wb-height);
    background: var(--wb-bg);
    border: var(--border);
    box-shadow: var(--box-shadow);
    border-radius: 10px;
    /* center */
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    /* fade in */
    -webkit-animation: fadeIn ease-in 1;
    -moz-animation: fadeIn ease-in 1;
    animation: fadeIn ease-in 1;
    -webkit-animation-fill-mode: forwards;
    -moz-animation-fill-mode: forwards;
    animation-fill-mode: forwards;
    -webkit-animation-duration: 1s;
    -moz-animation-duration: 1s;
    animation-duration: 1s;
    overflow: visible;
    box-sizing: border-box;
}

.whiteboard-header {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 48px;
    padding: 5px 6px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    background: var(--wb-toolbar-surface);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.24);
    backdrop-filter: blur(14px);
    color: #ffffff;
    cursor: move;
}

.whiteboard-header-title {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    padding: 0 4px;
}

.whiteboard-title-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    border-radius: 7px;
    background: rgba(89, 194, 255, 0.14);
    color: var(--wb-accent);
}

.whiteboard-title-text {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0;
}

.whiteboard-header-options {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 5px;
    min-width: 0;
}

.whiteboard-tool-group {
    display: flex;
    align-items: center;
    gap: 2px;
    min-height: 36px;
    padding: 2px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 8px;
    background: var(--wb-control-surface);
}

#whiteboardUnlockBtn,
#whiteboardLockBtn {
    display: none;
    margin-left: 3px;
    margin-right: 3px;
}

.whiteboard-header-title button,
.whiteboard-header-options button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    font-size: 0.88rem;
    background: transparent;
    color: #fff;
    border: none !important;
    border-radius: 6px;
    cursor: pointer;
    transition:
        background 0.18s ease,
        color 0.18s ease,
        box-shadow 0.18s ease;
}

.whiteboard-header-title button:hover,
.whiteboard-header-options button:hover {
    background: rgba(255, 255, 255, 0.11);
}

.whiteboard-header-title button:focus-visible,
.whiteboard-header-options button:focus-visible,
.whiteboard-color-control:focus-within {
    outline: 2px solid var(--wb-accent);
    outline-offset: 2px;
}

.whiteboard-header-options button.is-active,
.whiteboard-header-options button[aria-pressed='true'] {
    background: rgba(89, 194, 255, 0.18);
    color: var(--wb-accent) !important;
    box-shadow: inset 0 0 0 1px rgba(89, 194, 255, 0.4);
}

.whiteboard-color-control {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding: 0 7px;
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
}

.whiteboard-color-control:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.whiteboard-close-button:hover {
    background: rgba(255, 92, 92, 0.18) !important;
    color: #ff8a8a !important;
}

.whiteboard-responsive-action span {
    display: none;
}

.whiteboard-responsive-action i {
    pointer-events: none;
}

.whiteboardColorPicker {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    padding: 0;
    width: 18px;
    height: 18px;
    margin: 0;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.28);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
    background: transparent;
    cursor: pointer;
    transition:
        box-shadow 0.2s,
        border 0.2s,
        transform 0.2s;
    display: inline-block;
    vertical-align: middle;
}
.whiteboardColorPicker:hover {
    box-shadow: 0 0 0 2px rgba(102, 190, 255, 0.18);
    border: 2px solid #66beff;
    transform: scale(1.12);
}
.whiteboardColorPicker::-webkit-color-swatch {
    border: none;
    border-radius: 50%;
    padding: 0;
}
.whiteboardColorPicker::-webkit-color-swatch-wrapper {
    border: none;
    border-radius: 50%;
    padding: 0;
}
.whiteboardColorPicker::-moz-color-swatch {
    border: none;
    border-radius: 50%;
    padding: 0;
}
.whiteboardColorPicker::-moz-color-swatch-wrapper {
    border: none;
    border-radius: 50%;
    padding: 0;
}
.whiteboardColorPicker::color-swatch {
    border: none;
    border-radius: 50%;
    padding: 0;
}
.whiteboardColorPicker::color-swatch-wrapper {
    border: none;
    border-radius: 50%;
    padding: 0;
}

.hidden {
    display: none;
}

.show {
    display: block;
}

/* Styles for the dropdown button */
.whiteboard-dropdown {
    margin-left: 0;
    position: relative;
    display: flex;
    align-items: center;
}

.whiteboard-dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* Styles for the dropdown menu container */
.whiteboard-dropdown-menu {
    z-index: 12;
    position: absolute;
    margin-top: 5px;
    top: 100%;
    right: 0;
    display: none;
    min-width: 220px;
    padding: 6px;
    overflow-y: auto;
    overflow-x: hidden;
    max-height: var(--whiteboard-dropdown-max-height, calc(100dvh - 80px)) !important;
    overscroll-behavior-y: contain;
    scrollbar-width: thin;
}

/* Styles for dropdown menu items */
.whiteboard-dropdown-menu .app-dropdown-action {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    font-size: 0.8em;
    min-height: 38px;
    padding: 9px 10px;
}

.whiteboard-dropdown-menu .app-dropdown-action:hover {
    color: #ffffff;
}

/* Styles for icons and SVGs inside buttons */
.whiteboard-dropdown-menu .app-dropdown-action i,
.whiteboard-dropdown-menu .app-dropdown-action svg {
    width: 18px;
    min-width: 18px;
    text-align: center;
    flex: 0 0 18px;
    margin-right: 0;
}

/* Whiteboard Shortcuts Styles */
#whiteboardShortcutsContent {
    display: none;
}

.wb-shortcuts-container {
    text-align: left;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--body-bg);
    padding: 0.5rem 0.7rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
    max-width: 340px;
    margin: 0 auto;
    font-size: 0.85em;
    max-height: 70vh;
}

.wb-shortcuts-title {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--border-color, #e0e0e0);
}

.wb-shortcuts-title:first-child {
    margin-top: 0;
}

.wb-shortcuts-title i {
    color: var(--text-color);
    font-size: 1rem;
}

.wb-shortcuts-code {
    background: var(--body-bg);
    padding: 0.5rem 0.5rem;
    border-radius: 6px;
    white-space: pre;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-color);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.13);
    filter: brightness(0.92);
}

.wb-shortcuts-text {
    color: #66beff;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, rgba(102, 190, 255, 0.11), rgba(102, 190, 255, 0.06));
    padding: 4px 10px;
    border-radius: 6px;
    display: inline-block;
    box-shadow: 0 1px 4px rgba(102, 190, 255, 0.07);
}

.wb-shortcuts-list {
    list-style: none;
    padding-left: 0;
    background: var(--body-bg);
    border-radius: 6px;
    padding: 0.3rem 0.2rem;
    filter: brightness(0.97);
}

.wb-shortcuts-list li {
    margin: 0.3rem 0;
    padding: 0.3rem 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 4px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.wb-shortcuts-list li:hover {
    background: rgba(0, 0, 0, 0.04);
    border-left: 2px solid var(--border-color, #e0e0e0);
}

/* Sticky Note Dialog Styles */
.sticky-note-form {
    display: flex;
    background: var(--body-bg);
    flex-direction: column;
    gap: 1.2rem;
    padding: 1.2rem;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.18);
    max-width: 100%;
    box-sizing: border-box;
}

.sticky-note-colors-row {
    display: flex;
    gap: 1rem;
    width: 100%;
    flex-wrap: wrap;
}

.sticky-note-textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 10px;
    background: rgba(255, 235, 59, 0.07);
    color: var(--text-color, #ffffff);
    font-size: 1rem;
    font-family: 'Segoe UI', Arial, sans-serif;
    resize: vertical;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.08);
    box-sizing: border-box;
}

.sticky-note-color-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    min-width: 120px;
}

.sticky-note-color-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color, #ffffff);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sticky-note-color-input {
    width: 100%;
    height: 50px;
    border: none !important;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 1px 4px rgba(255, 215, 0, 0.07);
}

.sticky-note-color-input:hover {
    transform: scale(1.01);
}

.sticky-note-color-input::-webkit-color-swatch-wrapper {
    padding: 4px;
    border-radius: 10px;
}

.sticky-note-color-input::-webkit-color-swatch {
    border: none;
    border-radius: 8px;
}

.sticky-note-color-input::-moz-color-swatch {
    border: none;
    border-radius: 8px;
}

/* Responsive styles for small screens */
@media (max-width: 600px) {
    .sticky-note-form {
        padding: 0.7rem;
        border-radius: 8px;
        gap: 0.7rem;
    }
    .sticky-note-colors-row {
        flex-direction: column;
        gap: 0.7rem;
    }
    .sticky-note-color-group {
        min-width: 0;
    }
    .sticky-note-textarea {
        font-size: 0.95rem;
        padding: 8px;
    }
    .sticky-note-color-input {
        height: 38px;
        border-radius: 8px;
    }
}

/* Bottom-right Secondary Drag Handle */
.whiteboard-bottom-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    background-color: rgba(44, 44, 44, 0.85);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-left-radius: 8px;
    border-bottom-right-radius: 10px;
    cursor: move;
    z-index: 100;
    opacity: 0;
    transition:
        background-color 0.2s ease,
        opacity 0.3s ease-in-out;
}

.whiteboard-bottom-handle:hover {
    background-color: rgb(75, 75, 75);
    opacity: 1;
}

/* Bottom-left Secondary Drag Handle */
.whiteboard-bottom-left-handle {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 32px;
    background-color: rgba(44, 44, 44, 0.85);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-right-radius: 8px;
    border-bottom-left-radius: 10px;
    cursor: move;
    z-index: 100;
    opacity: 0;
    transition:
        background-color 0.2s ease,
        opacity 0.3s ease-in-out;
}

.whiteboard-bottom-left-handle:hover {
    background-color: rgb(75, 75, 75);
    opacity: 1;
}

#drag-handle-bottom-right:hover,
#drag-handle-bottom-left:hover {
    opacity: 1;
}

/* Keep primary drawing tools visible and move secondary actions into overflow. */
@media (max-width: 768px) {
    #whiteboard {
        padding: 5px;
        border-radius: 8px;
    }

    .whiteboard-header {
        gap: 4px;
        min-height: 38px;
        padding: 2px;
    }

    .whiteboard-title-text,
    .whiteboard-color-control > span {
        display: none;
    }

    .whiteboard-title-mark {
        width: 28px;
        height: 28px;
        flex-basis: 28px;
    }

    .whiteboard-header-title {
        gap: 2px;
        padding: 0;
    }

    .whiteboard-tool-group {
        min-height: 30px;
        padding: 0;
        border: none;
        background: transparent;
    }

    .whiteboard-canvas-tools {
        order: 2;
    }

    .whiteboard-drawing-tools {
        order: 1;
    }

    .whiteboard-history-tools {
        order: 3;
    }

    .whiteboard-dropdown {
        order: 4;
    }

    .whiteboard-close-button {
        order: 5;
    }

    .whiteboard-header-title button,
    .whiteboard-header-options button,
    .whiteboard-dropdown-toggle {
        padding: 5px;
        font-size: 0.75rem;
        min-width: 28px;
        height: 28px;
    }

    .whiteboard-dropdown {
        height: 28px;
    }

    .whiteboardColorPicker {
        width: 18px;
        height: 18px;
    }

    .whiteboard-color-control {
        width: 28px;
        height: 28px;
        padding: 0;
        justify-content: center;
    }

    #whiteboardResponsiveActionsMenu {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        margin-bottom: 4px;
        padding-bottom: 4px;
    }

    #whiteboardResponsiveActionsMenu:empty {
        display: none;
    }

    #whiteboardResponsiveActionsMenu .whiteboard-responsive-action {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 12px;
        width: 100%;
        min-width: 0;
        height: auto;
        padding: 10px 12px;
        border-radius: 10px;
        font-size: 0.8em;
        text-align: left;
        line-height: 1.35;
    }

    #whiteboardResponsiveActionsMenu .whiteboard-responsive-action i {
        width: 18px;
        min-width: 18px;
        text-align: center;
        flex: 0 0 18px;
    }

    #whiteboardResponsiveActionsMenu .whiteboard-responsive-action span {
        display: inline;
        font-weight: normal;
    }
}

/* Hide secondary drag handles on touch/mobile devices (no hover, dragElement is mouse-only) */
@media (hover: none), (pointer: coarse) {
    .whiteboard-bottom-handle,
    .whiteboard-bottom-left-handle {
        display: none;
    }
}