/* ========================================
   FlickArt - Windows 95/98 Aesthetic
   Clean layout with no overlapping elements
   ======================================== */

:root {
    --bg: #008080;
    --panel: #C0C0C0;
    --panel-dark: #D4D0C8;
    --text: #000000;

    --border-light: #FFFFFF;
    --border-mid: #808080;
    --border-dark: #404040;

    --title-bg: #000080;
    --title-text: #FFFFFF;

    --sidebar-width: 280px;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 12px;
    padding: 20px;
}

/* ========================================
   Main Window
   ======================================== */
.window {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--panel);

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

/* Title Bar */
.title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3px 4px;
    background: linear-gradient(90deg, var(--title-bg), #1084d0);
    color: var(--title-text);
    font-weight: bold;
    font-size: 13px;
    user-select: none;
}

.title-text {
    padding-left: 4px;
}

.title-buttons {
    display: flex;
    gap: 2px;
}

.title-btn {
    width: 18px;
    height: 18px;
    font-size: 10px;
    font-weight: bold;
    line-height: 1;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;

    background: var(--panel);
    color: var(--text);
    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
    cursor: pointer;
}

.title-btn:active {
    border-top: 2px solid var(--border-dark);
    border-left: 2px solid var(--border-dark);
    border-right: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
}

.close-btn {
    background: var(--panel);
}

/* Menu Bar */
.menu-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    padding: 4px;
    background: var(--panel);
    border-bottom: 1px solid var(--border-mid);
}

.menu-btn {
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    background: var(--panel);
    color: var(--text);
    border: none;
    cursor: pointer;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.menu-btn:hover {
    background: #D0D0D0;
}

.menu-btn:active {
    border-top: 2px solid var(--border-dark);
    border-left: 2px solid var(--border-dark);
    border-right: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
}

/* ========================================
   Main Content Area
   ======================================== */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--panel);
    padding: 8px;
    overflow-y: auto;
    border-right: 2px solid var(--border-mid);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Panels */
.panel {
    background: var(--panel-dark);
    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.panel-header {
    background: var(--title-bg);
    color: var(--title-text);
    padding: 4px 8px;
    font-weight: bold;
    font-size: 11px;
}

.panel-content {
    padding: 8px;
}

/* Effect toggle buttons */
.effect-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
}

.effect-btn {
    flex: 1;
    min-width: 60px;
    padding: 6px 8px;
    font-size: 11px;
    font-weight: 600;
    background: var(--panel);
    color: var(--text);
    border: none;
    cursor: pointer;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.effect-btn:hover {
    background: #D0D0D0;
}

.effect-btn:active,
.effect-btn.active {
    border-top: 2px solid var(--border-dark);
    border-left: 2px solid var(--border-dark);
    border-right: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
    background: #A0A0A0;
}

/* Format buttons */
.format-btn {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    background: var(--panel);
    color: var(--text);
    border: none;
    cursor: pointer;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.format-btn.active {
    background: var(--title-bg);
    color: white;
}

/* Slider Items */
.slider-item {
    margin-bottom: 8px;
}

.slider-item:last-child {
    margin-bottom: 0;
}

.slider-item label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    margin-bottom: 4px;
}

.slider-item input[type="range"] {
    width: 100%;
    height: 18px;
    cursor: pointer;
    accent-color: var(--title-bg);
}

/* Color Grid */
.color-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.color-grid .slider-item {
    margin-bottom: 0;
    padding: 6px;
    border-top: 1px solid var(--border-dark);
    border-left: 1px solid var(--border-dark);
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.color-red { background: #FFD0D0; }
.color-green { background: #D0FFD0; }
.color-blue { background: #D0D0FF; }
.color-yellow { background: #FFFFD0; }
.color-purple { background: #E8D0FF; }
.color-pink { background: #FFD0E8; }

/* Tools Grid */
.tools-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tool-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tool-label {
    font-size: 11px;
    font-weight: 600;
}

.tool-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tool-buttons button {
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    min-width: 36px;
    background: var(--panel);
    color: var(--text);
    border: none;
    cursor: pointer;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.tool-buttons button:hover {
    background: #D0D0D0;
}

.tool-buttons button:active {
    border-top: 2px solid var(--border-dark);
    border-left: 2px solid var(--border-dark);
    border-right: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
}

/* ========================================
   Canvas Area
   ======================================== */
.canvas-area {
    flex: 1;
    position: relative;
    background: #000;
    overflow: hidden;

    border-top: 2px solid var(--border-dark);
    border-left: 2px solid var(--border-dark);
    border-right: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-light);
    margin: 8px;
}

.canvas-area canvas {
    position: absolute !important;
    top: 0;
    left: 0;
}

/* ========================================
   Status Bar
   ======================================== */
.status-bar {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    background: var(--panel);
    font-size: 11px;

    border-top: 2px solid var(--border-mid);
}

.status-bar span {
    padding: 2px 8px;
    background: var(--panel-dark);
    border-top: 1px solid var(--border-dark);
    border-left: 1px solid var(--border-dark);
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.status-bar {
    display: flex;
    justify-content: space-between;
}

.status-bar span:first-child {
    flex: 1;
}

/* ========================================
   Loading Overlay
   ======================================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
}

.loading-overlay.hidden {
    display: none;
}

.loading-dialog {
    background: var(--panel);
    padding: 20px 30px;
    text-align: center;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.loading-spinner {
    width: 24px;
    height: 24px;
    margin: 0 auto 10px;
    border: 3px solid var(--border-mid);
    border-top-color: var(--title-bg);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    font-size: 12px;
    font-weight: 600;
    margin: 0;
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    top: 40px;
    right: 40px;
    z-index: 1001;
    padding: 10px 16px;
    background: var(--panel);
    font-size: 12px;
    font-weight: 600;

    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-right: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);

    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s, transform 0.2s;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.hidden {
    display: none;
}

.toast.success {
    border-left: 4px solid #008000;
}

.toast.error {
    border-left: 4px solid #CC0000;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 900px) {
    :root {
        --sidebar-width: 240px;
    }

    body {
        padding: 10px;
    }
}

@media (max-width: 700px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        max-height: 50vh;
        border-right: none;
        border-bottom: 2px solid var(--border-mid);
    }

    .canvas-area {
        min-height: 300px;
    }

    .menu-bar {
        flex-wrap: wrap;
    }

    .color-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 500px) {
    .presets-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .color-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .menu-btn {
        font-size: 11px;
        padding: 4px 8px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}