@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
    --primary: #8b5cf6;
    --primary-light: #a78bfa;
    --primary-dark: #7c3aed;
    --secondary: #ec4899;
    --secondary-light: #f472b6;
    --accent: #06b6d4;
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border: #475569;
    --success: #10b981;
    --error: #ef4444;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #312e81 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    overflow-y: auto;
}

.container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.grid-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 900px) {
    .grid-two-col {
        grid-template-columns: 1fr;
    }
}

/* Header */
header {
    text-align: center;
    margin-bottom: 24px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 2px 4px var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.card:hover {
    box-shadow: 0 4px 8px var(--shadow);
}

.card-primary {
    border: 2px solid var(--primary);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
}

.card-compact {
    padding: 20px;
}

.card-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.text-hint {
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

.section-hint {
    margin: 0 0 12px 0;
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.char-counter {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: none;
    letter-spacing: normal;
}

.drag-hint {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
    font-style: italic;
}

/* Buttons */
button {
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow);
}

button:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--border);
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-clear {
    background: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 8px 14px;
    font-size: 13px;
}

.btn-clear:hover {
    background: var(--error);
    color: white;
    border-color: var(--error);
}

.btn-copy {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
}

/* Inputs */
input[type="text"] {
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s;
}

input[type="text"]::placeholder {
    color: var(--text-muted);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
}

input[type="color"] {
    width: 42px;
    height: 42px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--bg-input);
    cursor: pointer;
    transition: all 0.2s;
}

input[type="color"]:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

/* Color Controls */
.color-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.color-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}

.pickr-container {
    display: flex;
    align-items: center;
}

.pcr-button {
    width: 48px !important;
    height: 48px !important;
    border-radius: 12px !important;
    border: 2px solid var(--border) !important;
    transition: all 0.2s !important;
}

.pcr-button:hover {
    border-color: var(--primary) !important;
    transform: scale(1.05) !important;
}

.pcr-app {
    background: var(--bg-card) !important;
    border: 2px solid var(--primary) !important;
    border-radius: 16px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7) !important;
    min-width: 380px !important;
    max-width: 380px !important;
}

.pcr-app .pcr-selection {
    background: var(--bg-main) !important;
    border-radius: 12px 12px 0 0 !important;
}

.pcr-app .pcr-selection .pcr-color-preview {
    border-radius: 10px !important;
}

.pcr-app .pcr-interaction {
    padding: 12px !important;
    background: var(--bg-card) !important;
}

.pcr-app .pcr-interaction input {
    background: var(--bg-input) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--border) !important;
    border-radius: 8px !important;
    padding: 8px 12px !important;
    font-size: 14px !important;
    font-family: 'Courier New', monospace !important;
}

.pcr-app .pcr-interaction input:focus {
    border-color: var(--primary) !important;
}

.pcr-app .pcr-interaction .pcr-result {
    background: var(--bg-input) !important;
    color: var(--text-primary) !important;
    border-radius: 8px !important;
    padding: 10px !important;
    font-family: 'Courier New', monospace !important;
}

.pcr-app .pcr-interaction .pcr-save,
.pcr-app .pcr-interaction .pcr-clear,
.pcr-app .pcr-interaction .pcr-cancel {
    background: var(--primary) !important;
    color: white !important;
    border-radius: 8px !important;
    padding: 10px 16px !important;
    font-weight: 600 !important;
    transition: all 0.2s !important;
    border: none !important;
}

.pcr-app .pcr-interaction .pcr-clear {
    background: var(--error) !important;
}

.pcr-app .pcr-interaction .pcr-save:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4) !important;
}

.pcr-app .pcr-interaction .pcr-clear:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4) !important;
}

.pcr-app .pcr-swatches {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 12px !important;
    padding: 16px !important;
    background: var(--bg-main) !important;
}

.pcr-app .pcr-swatches button {
    width: 100% !important;
    height: 40px !important;
    border-radius: 8px !important;
    margin: 0 !important;
    border: 2px solid var(--border) !important;
    transition: all 0.2s !important;
}

.pcr-app .pcr-swatches button:hover {
    transform: scale(1.1) !important;
    border-color: var(--primary) !important;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3) !important;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-main);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 6px 12px 6px 6px;
    flex: 1;
    transition: border-color 0.2s;
}

.color-picker-wrapper:focus-within {
    border-color: var(--primary);
}

#colorPicker {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: none;
}

#colorPicker::-webkit-color-swatch-wrapper {
    padding: 0;
}

#colorPicker::-webkit-color-swatch {
    border: 2px solid var(--border);
    border-radius: 8px;
}

#colorPicker::-moz-color-swatch {
    border: 2px solid var(--border);
    border-radius: 8px;
}

.hex-input-wrapper {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.hex-prefix {
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    font-size: 16px;
    font-weight: 600;
}

.hex-input {
    flex: 1;
    font-family: 'Courier New', monospace;
    padding: 8px;
    font-size: 15px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    outline: none;
    text-transform: lowercase;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.text-input {
    width: 100%;
    font-size: 16px;
    padding: 14px 16px;
}

/* Color Display */
.color-display {
    background: var(--bg-main);
    border-radius: 12px;
    padding: 20px;
    min-height: 120px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-start;
    border: 2px dashed var(--border);
}

.color-display.empty {
    justify-content: center;
    align-items: center;
    color: var(--text-muted);
    font-style: italic;
}

.color-display-compact {
    background: var(--bg-main);
    border-radius: 8px;
    padding: 12px;
    min-height: 60px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    border: 1px solid var(--border);
}

.color-display-compact.empty {
    justify-content: center;
}

.empty-state {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

.color-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: transform 0.2s;
}

.color-swatch:hover {
    transform: scale(1.05);
}

.swatch-box {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 4px var(--shadow);
    position: relative;
}

.swatch-box:hover {
    border-color: var(--error);
    box-shadow: 0 2px 8px var(--shadow);
    transform: scale(0.95);
}

.swatch-box:hover::after {
    content: '✕';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 18px;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
    font-weight: bold;
}

.swatch-label {
    font-family: 'Courier New', monospace;
    font-size: 9px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Presets */
.presets-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.preset-btn {
    background: var(--bg-input);
    color: var(--text-primary);
    padding: 8px 12px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    font-weight: 500;
    font-size: 12px;
}

.preset-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--preset-gradient, linear-gradient(90deg, #ff0000, #0000ff));
}

.preset-btn:hover {
    border-color: var(--primary);
    background: rgba(139, 92, 246, 0.1);
}

/* Preview */
.preview {
    background: var(--bg-main);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    min-height: 80px;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.6;
    word-wrap: break-word;
    display: block;
    text-align: center;
    user-select: none;
    cursor: crosshair;
}

.char-span {
    display: inline;
    transition: background 0.1s;
    padding: 2px 0;
    cursor: crosshair;
}

.color-marker {
    display: inline-block;
    border: 2px solid rgba(139, 92, 246, 0.5);
    border-radius: 6px;
    padding: 2px 4px;
    margin: 0 2px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.color-marker:hover {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.1);
    transform: translateY(-2px);
}

.color-marker:hover::after {
    content: '✕ Click to clear';
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--error);
    color: white;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.space-char {
    display: inline;
    white-space: pre;
    cursor: crosshair;
}

.preview.empty {
    color: var(--text-muted);
    font-size: 16px;
    font-weight: 400;
    font-style: italic;
}

/* Output */
textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--bg-main);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 12px;
    resize: vertical;
    min-height: 100px;
    margin-bottom: 10px;
    line-height: 1.5;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Selection Picker Container - just an anchor point, kept hidden */
#selectionPickrContainer {
    position: absolute;
    width: 0;
    height: 0;
    overflow: visible;
}

/* Hide the Pickr button for selection picker (we only use the popup) */
#selectionPickrContainer .pcr-button {
    display: none !important;
}

/* Text Selection Highlight */
.char-selected {
    background: rgba(139, 92, 246, 0.3);
    border-radius: 2px;
    position: relative;
}

/* Toast */
.toast {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border);
    z-index: 1000;
    animation: slideDown 0.3s ease-out, slideUp 0.3s ease-in 1.7s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toast.success {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.toast.error {
    background: var(--error);
    color: white;
    border-color: var(--error);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-30px);
    }
}

/* Labels */
label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

/* Category headers */
.preset-category {
    grid-column: 1 / -1;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 12px;
    padding-top: 6px;
    border-top: 1px solid rgba(71, 85, 105, 0.5);
}

.preset-category:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

/* Responsive */
@media (max-width: 640px) {
    body {
        padding: 12px;
    }

    h1 {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .card {
        padding: 18px;
        margin-bottom: 16px;
    }

    .card-compact {
        padding: 16px;
    }

    .color-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .color-picker-wrapper {
        width: 100%;
    }

    .input-group {
        width: 100%;
    }

    .hex-input {
        flex: 1;
    }

    .btn-clear {
        width: 100%;
    }

    .presets-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .preset-btn {
        padding: 10px 12px;
        font-size: 13px;
    }

    .preview {
        font-size: 20px;
        padding: 20px;
        min-height: 80px;
    }

    .text-input {
        font-size: 15px;
    }
}