/* Reset and base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-tertiary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #2a2a2a;
    --transition: 0.2s ease;
}

html {
    font-size: 16px;
}

body {
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* App layout */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo-sub {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* Main content */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 3rem 2rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* Generator section */
.generator {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Input styling */
.input-wrapper {
    position: relative;
    max-width: 600px;
}

#textInput {
    width: 100%;
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: 2.5rem;
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.5rem 0;
    outline: none;
    letter-spacing: -0.02em;
}

#textInput::placeholder {
    color: var(--text-muted);
}

#textInput.is-placeholder {
    color: var(--text-muted);
}

.input-line {
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--border));
    transform-origin: left;
    transition: transform var(--transition);
}

#textInput:focus + .input-line {
    background: var(--accent);
}

/* Controls */
.controls {
    display: flex;
    gap: 2rem;
    padding: 1rem 0;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.control-value {
    font-size: 0.75rem;
    font-family: 'Geist Mono', monospace;
    color: var(--text-secondary);
    min-width: 45px;
    text-align: right;
}

.control-group input[type="range"] {
    width: 100px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border);
    border-radius: 3px;
    cursor: pointer;
}

.control-group input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition);
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    margin-top: -9px;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.control-group input[type="range"]::-moz-range-track {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--text-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

@media (max-width: 480px) {
    .controls {
        flex-direction: column;
        gap: 1rem;
    }

    .control-group {
        width: 100%;
    }

    .control-group input[type="range"] {
        flex: 1;
        width: 100%;
    }
}

/* Preview container */
.preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

.output {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    padding: 2rem 0;
}

.word {
    display: flex;
    align-items: flex-end;
    flex-shrink: 0;
}

.output img {
    height: 100px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition);
}

.output img:hover {
    transform: scale(1.05);
}

.output .space {
    width: 40px;
    height: 100px;
}

.warning {
    color: #ef4444;
    font-size: 0.875rem;
    min-height: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition);
}

.warning.visible {
    opacity: 1;
}

/* Actions */
.actions {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-download:hover:not(:disabled) {
    background: var(--accent);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-download:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-download svg {
    width: 18px;
    height: 18px;
}

/* Info section */
.info {
    padding-top: 1rem;
}

.supported {
    font-size: 0.8125rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

/* Footer */
.footer {
    padding: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Accordion */
.accordion {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 1rem 1.25rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.accordion-header:hover {
    color: var(--text-primary);
}

.accordion-header.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.accordion-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.3s ease;
    opacity: 0.5;
}

.accordion-header:hover .accordion-icon {
    opacity: 1;
}

.accordion-header.active .accordion-icon {
    transform: rotate(180deg);
    opacity: 1;
}

.accordion-content {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border);
}

.accordion-content.hidden {
    display: none;
}

/* Gallery */
.gallery {
    padding: 1.25rem;
}

.gallery-section {
    margin-bottom: 0.75rem;
}

.gallery-section:last-child {
    margin-bottom: 0;
}

.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.gallery-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
}

.gallery-item:hover {
    background: var(--bg-primary);
    border-color: #3a3a3a;
    transform: scale(1.05);
}

.gallery-item img {
    max-width: 32px;
    max-height: 32px;
    object-fit: contain;
}

/* Rights content */
.rights-content {
    padding: 1.25rem;
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .rights-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

.rights-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.rights-heading {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.rights-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: all var(--transition);
}

.rights-item:hover {
    border-color: #3a3a3a;
    background: #181818;
}

.rights-item h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.rights-item p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.rights-item a,
.rights-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--accent);
    text-decoration: none;
    transition: all var(--transition);
}

.rights-item a:hover,
.rights-links a:hover {
    color: #60a5fa;
}

.rights-links {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.link-icon {
    width: 11px;
    height: 11px;
    flex-shrink: 0;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem 1.25rem 1rem;
    }

    .main {
        padding: 2rem 1.25rem;
    }

    #textInput {
        font-size: 1.75rem;
    }

    .output img {
        height: 60px;
    }

    .output .space {
        width: 24px;
        height: 60px;
    }

    .footer {
        padding: 1.5rem 1.25rem;
    }

    .rights-content {
        padding: 1rem;
    }

    .gallery {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        gap: 0.25rem;
    }

    #textInput {
        font-size: 1.5rem;
    }

    .output img {
        height: 50px;
    }
}

/* Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.output img {
    animation: fadeIn 0.3s ease forwards;
}