:root {
    --bg-dark: #121212;
    --bg-sidebar: #1a1a1a;
    --bg-card: #2b2b2b;
    --bg-input: #1f1f1f;
    --text-primary: #e0e0e0;
    --text-secondary: #9e9e9e;
    --accent-blue: #00a8ff;
    --accent-blue-hover: #008be6;
    --border-color: #333333;
    --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Open Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    width: 100%;
}

.topbar {
    height: 60px;
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    flex-shrink: 0;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent-blue);
}

.topbar-right a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s ease;
}

.topbar-right a:hover {
    color: var(--accent-blue);
}

.content-wrapper {
    flex: 1;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    max-width: 100%;
    margin: 0 auto;
    width: 100%;
    gap: 10px;
}

/* Cards & Layout */
.header-card {
    text-align: center;
    padding: 10px !important;
}

.header-card h2 {
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--accent-blue);
}

.header-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    flex: 1;
    min-height: 0;
}

.grid-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
    min-height: 0;
}

.card {
    background-color: var(--bg-card);
    border-radius: 6px;
    padding: 10px 15px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
}

.card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 10px;
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.text-muted {
    color: var(--text-secondary);
}

label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

input[type="text"],
input[type="number"],
textarea,
select {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 15px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

input[type="number"] {
    font-family: monospace;
    font-size: 1.1rem;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(0, 168, 255, 0.1);
}

textarea {
    resize: none;
    min-height: 40px;
    line-height: 1.5;
    flex-grow: 1;
}

/* Formatting Toolbar */
.format-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    background-color: #222;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 4px 4px 0 0;
}

.format-toolbar+textarea {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.format-btn {
    background-color: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    border-radius: 3px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.format-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--border-color);
}

.format-btn i {
    font-size: 0.8rem;
}

.toolbar-separator {
    width: 1px;
    height: 20px;
    background-color: var(--border-color);
    margin: 0 5px;
}

.format-tool-group {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.03);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid #333;
}

.format-tool-group input[type="range"] {
    width: 80px;
    height: 4px;
    background: var(--bg-card);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    border-radius: 2px;
    padding: 0;
    cursor: pointer;
}

.format-tool-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-blue);
    cursor: pointer;
}

.toolbar-color-picker {
    width: 25px !important;
    height: 25px;
    padding: 0 !important;
    border: none !important;
    background: none !important;
    cursor: pointer;
}

.toolbar-text-input {
    height: 25px;
    padding: 2px 6px !important;
    font-size: 0.85rem !important;
    font-family: monospace !important;
}

/* Hide spin buttons for input[type="number"] - chromium thing */
input[type="number"].no-spin::-webkit-inner-spin-button,
input[type="number"].no-spin::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"].no-spin {
    -moz-appearance: textfield;
    -webkit-appearance: textfield;
    appearance: textfield;
}

/* Buttons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #333333;
}


/* Color Stops */
#colors-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.color-stop-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-input);
    padding: 10px 15px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.color-stop-row input[type="color"] {
    width: 45px;
    height: 35px;
    padding: 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: none;
}

.color-stop-row .color-info {
    flex: 1;
    font-family: monospace;
    font-size: 1rem;
    font-weight: 600;
}

.remove-color-btn {
    background: none;
    border: none;
    color: #e74c3c;
    cursor: pointer;
    padding: 8px;
    border-radius: 3px;
    transition: all 0.2s;
}

.remove-color-btn:hover {
    background-color: rgba(231, 76, 60, 0.1);
}

#add-color-btn {
    width: 100%;
}

/* Preview Box */
.preview-box {
    background-color: #0b0b0b;
    background-image: radial-gradient(#222 1px, transparent 1px);
    background-size: 20px 20px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    min-height: 150px;
    max-height: 250px;
    overflow-y: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 1.3rem;
    font-family: 'Open Sans', sans-serif;
    overflow-wrap: break-word;
    word-break: break-word;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    flex-grow: 1;
}

/* Output Area */
.output-row {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-grow: 1;
    min-height: 0;
}

.output-row textarea {
    font-family: monospace;
    font-size: 1rem;
    color: #4ade80;
    background-color: #000;
    flex-grow: 1;
    min-height: 0;
    overflow-y: auto;
    resize: none;
}

.output-row .copy-btn {
    align-self: flex-start;
    flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1100px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
}