/* Advanced Color Palette Generator Stylesheet */

*, *::before, *::after {
    box-sizing: border-box;
}

/* Light & Dark Theme Variable Contexts */
.adv-palette-theme-light {
    --bg-canvas: #f0f2f5;
    --bg-header: #ffffff;
    --text-header: #1a1d20;
    --bg-toolbar: #ffffff;
    --text-toolbar: #2d3748;
    --color-neon-green: #39FF14;
    --color-neon-hover: #32e010;
    --color-dark-accent: #111111;
    --bg-card: #ffffff;
    --text-card: #2d3748;
    --border-color: #e2e8f0;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.08);
}

.adv-palette-theme-dark {
    --bg-canvas: #121212;
    --bg-header: #1e1e1e;
    --text-header: #f5f6f7;
    --bg-toolbar: #1e1e1e;
    --text-toolbar: #e2e8f0;
    --color-neon-green: #39FF14;
    --color-neon-hover: #32e010;
    --color-dark-accent: #ffffff;
    --bg-card: #252525;
    --text-card: #f5f6f7;
    --border-color: #333333;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.5);
}

/* Master Layout Styling */
#adv-palette-container {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-canvas);
    min-height: 85vh;
    width: 100%;
    margin: 0 auto;
    padding: 0 0 20px 0;
    display: block;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: background-color 0.3s ease;
}

/* Header Bar - Centered Name and Dark Text by Default */
.adv-palette-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    transition: background-color 0.3s ease;
}

.adv-palette-title {
    margin: 0;
    padding: 0;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-header);
    letter-spacing: -0.5px;
}

/* Control Toolbar Layout */
.adv-palette-toolbar {
    background-color: var(--bg-toolbar);
    margin: 15px;
    padding: 15px 25px;
    border-radius: 8px;
    display: table;
    width: calc(100% - 30px);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.adv-palette-control-group {
    display: table-cell;
    vertical-align: middle;
    padding-right: 20px;
}

.adv-palette-control-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-toolbar);
    margin-right: 8px;
    display: inline-block;
}

.adv-palette-control-group input[type="text"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-canvas);
    color: var(--text-card);
    font-size: 14px;
    width: 200px;
    outline: none;
    transition: border 0.2s;
}

.adv-palette-control-group input[type="text"]:focus {
    border-color: var(--color-dark-accent);
}

.adv-palette-control-group input[type="range"] {
    vertical-align: middle;
    width: 130px;
    cursor: pointer;
}

.adv-palette-actions {
    display: table-cell;
    text-align: right;
    vertical-align: middle;
}

/* Specialized Neon Green Button & Action Controls */
.adv-btn-primary {
    background-color: var(--color-neon-green) !important;
    color: #111111 !important;
    border: none !important;
    padding: 10px 20px !important;
    font-size: 14px !important;
    font-weight: 600 !important;
    border-radius: 6px !important;
    cursor: pointer !important;
    display: inline-block;
    box-shadow: 0 2px 6px rgba(57, 255, 20, 0.2);
    transition: transform 0.1s ease, background-color 0.2s ease !important;
    text-decoration: none;
}

.adv-btn-primary:hover {
    background-color: var(--color-neon-hover) !important;
    transform: translateY(-1px);
}

.adv-btn-primary:active {
    transform: translateY(1px);
}

.adv-btn-secondary {
    background-color: transparent !important;
    color: var(--text-toolbar) !important;
    border: 1px solid var(--border-color) !important;
    padding: 10px 14px !important;
    font-size: 14px !important;
    border-radius: 6px !important;
    cursor: pointer !important;
    display: inline-block;
    transition: background-color 0.2s;
    margin-left: 8px;
}

.adv-btn-secondary:hover {
    background-color: var(--border-color) !important;
}

.adv-kbd-hint {
    background: rgba(17, 17, 17, 0.15);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 11px;
    margin-left: 4px;
}

/* Dropdown Sub-menu Architecture */
.adv-dropdown {
    position: relative;
    display: inline-block;
    margin-left: 8px;
}

.adv-dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    background-color: var(--bg-card);
    min-width: 200px;
    box-shadow: var(--shadow-md);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    z-index: 100;
    text-align: left;
    overflow: hidden;
}

.adv-dropdown-content a {
    color: var(--text-card);
    padding: 10px 15px;
    text-decoration: none;
    display: block;
    font-size: 13.5px;
    transition: background-color 0.2s;
}

.adv-dropdown-content a:hover {
    background-color: var(--bg-canvas);
}

.adv-dropdown-content.show {
    display: block;
}

/* Dynamic Flex-Grid Layout Columns Adjusters */
#adv-palette-display {
    display: block;
    width: calc(100% - 30px);
    margin: 15px;
    min-height: 55vh;
}

.adv-palette-grid-5 .adv-color-card { width: 20%; }
.adv-palette-grid-6 .adv-color-card { width: 16.666%; }
.adv-palette-grid-7 .adv-color-card { width: 14.285%; }
.adv-palette-grid-8 .adv-color-card { width: 12.5%; }
.adv-palette-grid-9 .adv-color-card { width: 11.111%; }
.adv-palette-grid-10 .adv-color-card { width: 10%; }

/* Elegant Color Cards Display Layout */
.adv-color-card {
    display: block;
    float: left;
    height: 55vh;
    position: relative;
    padding: 20px 10px;
    text-align: center;
    transition: background-color 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 8px;
}

.adv-color-card-inner {
    position: absolute;
    bottom: 25px;
    left: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.92);
    padding: 15px 10px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    color: #1a1d20;
    transition: background-color 0.3s, color 0.3s;
}

.adv-palette-theme-dark .adv-color-card-inner {
    background: rgba(30, 30, 30, 0.92);
    color: #f5f6f7;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.adv-card-hex {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    cursor: pointer;
}

.adv-card-hex:hover {
    text-decoration: underline;
}

/* Format Value Dropdown Select inside Card */
.adv-card-format-select {
    width: 100%;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px;
    font-size: 11px;
    font-weight: 600;
    color: inherit;
    margin-bottom: 12px;
    cursor: pointer;
    outline: none;
}

/* Live Accessibility Text Display Badges */
.adv-accessibility-badge {
    display: inline-block;
    padding: 3px 8px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 20px;
    margin-bottom: 15px;
}

.adv-accessibility-badge.pass {
    background-color: #d1fae5;
    color: #065f46;
}

.adv-accessibility-badge.fail {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Interaction Utility Triggers */
.adv-card-actions {
    display: block;
    width: 100%;
}

.adv-card-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 15px;
    color: inherit;
    padding: 5px 8px;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
    display: inline-block;
}

.adv-card-btn:hover {
    background-color: rgba(0, 0, 0, 0.08);
}

.adv-palette-theme-dark .adv-card-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.adv-card-btn.locked {
    color: #ff4757 !important;
}

/* Clear Floating Clearfix */
#adv-palette-display::after {
    content: "";
    clear: both;
    display: table;
}

/* Notification Toast Messages popup */
.adv-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: #111111;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
}

.adv-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Modal Core Popup Overlays Structure */
.adv-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 500;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.adv-modal-overlay.show {
    display: flex;
}

.adv-modal-box {
    background-color: var(--bg-card);
    border-radius: 8px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.adv-modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    display: block;
    width: 100%;
}

.adv-modal-title {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-header);
    float: left;
}

#adv-modal-close {
    background: transparent;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--text-toolbar);
    float: right;
    line-height: 1;
}

.adv-modal-header::after {
    content: "";
    clear: both;
    display: table;
}

.adv-modal-body {
    padding: 20px;
}

.adv-modal-body textarea {
    width: 100%;
    height: 180px;
    background-color: var(--bg-canvas);
    color: var(--text-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: monospace;
    font-size: 12px;
    padding: 10px;
    resize: none;
    outline: none;
}

.adv-modal-footer {
    padding: 12px 20px;
    background-color: var(--bg-canvas);
    border-top: 1px solid var(--border-color);
    text-align: right;
}

/* Complete Responsive Queries Framework Scaling down to absolute Mobile Devices */
@media (max-width: 992px) {
    .adv-palette-toolbar {
        display: block;
    }
    .adv-palette-control-group {
        display: block;
        padding-right: 0;
        margin-bottom: 12px;
    }
    .adv-palette-actions {
        display: block;
        text-align: left;
    }
    .adv-color-card {
        height: 45vh;
    }
}

@media (max-width: 768px) {
    .adv-color-card {
        display: block;
        float: none !important;
        width: 100% !important;
        height: 140px !important;
        margin-bottom: 10px;
    }
    .adv-color-card-inner {
        top: 50%;
        bottom: auto;
        transform: translateY(-50%);
        left: 20px;
        right: 20px;
        padding: 8px 15px;
        display: table;
        width: calc(100% - 40px);
    }
    .adv-card-hex, .adv-card-format-select, .adv-accessibility-badge, .adv-card-actions {
        display: table-cell;
        vertical-align: middle;
        margin-bottom: 0;
        text-align: center;
    }
    .adv-card-format-select {
        width: 110px;
        margin: 0 10px;
    }
    .adv-accessibility-badge {
        margin: 0 10px;
    }
}