/* CSS Custom Properties for Theming */
:root {
    /* Light Theme Colors - Softer Hues */
    --bg-primary: #fafbfc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f7fa;
    --bg-gradient-start: #e0e7ff;
    --bg-gradient-mid: #c7d2fe;
    --bg-gradient-end: #a5b4fc;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --text-inverse: #ffffff;
    
    --border-color: rgba(160, 174, 192, 0.25);
    --border-focus: rgba(99, 102, 241, 0.4);
    
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(160, 174, 192, 0.15);
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.06);
    
    --input-bg: rgba(255, 255, 255, 0.95);
    --input-border: rgba(160, 174, 192, 0.2);
    --input-focus-bg: rgba(248, 250, 252, 0.95);
    --select-bg: #ffffff;
    --select-hover-bg: #f8fafc;
    
    --btn-primary-bg: linear-gradient(135deg, #667eea 0%, #9f7aea 100%);
    --btn-primary-hover: linear-gradient(135deg, #5a67d8 0%, #805ad5 100%);
    --btn-primary-shadow: rgba(102, 126, 234, 0.25);
    
    --btn-secondary-bg: rgba(102, 126, 234, 0.1);
    --btn-secondary-border: rgba(102, 126, 234, 0.3);
    --btn-secondary-text: #667eea;
    --btn-secondary-hover-bg: rgba(102, 126, 234, 0.15);
    
    --output-bg: rgba(247, 250, 252, 0.5);
    --output-border: rgba(160, 174, 192, 0.25);
    --output-placeholder: #a0aec0;
    
    --success-color: #48bb78;
    --error-color: #f56565;
    
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    /* Dark Theme Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-gradient-start: #000000;
    --bg-gradient-mid: #1a1a1a;
    --bg-gradient-end: #2d2d2d;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-focus: rgba(139, 92, 246, 0.5);
    
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    
    --input-bg: rgba(15, 23, 42, 0.8);
    --input-border: rgba(255, 255, 255, 0.15);
    --input-focus-bg: rgba(30, 41, 59, 0.9);
    --select-bg: #1e293b;
    --select-hover-bg: #334155;
    
    --btn-primary-bg: linear-gradient(135deg, #64748b 0%, #475569 100%);
    --btn-primary-hover: linear-gradient(135deg, #475569 0%, #334155 100%);
    --btn-primary-shadow: rgba(71, 85, 105, 0.4);
    
    --btn-secondary-bg: rgba(100, 116, 139, 0.2);
    --btn-secondary-border: rgba(100, 116, 139, 0.4);
    --btn-secondary-text: #94a3b8;
    --btn-secondary-hover-bg: rgba(100, 116, 139, 0.3);
    
    --output-bg: rgba(15, 23, 42, 0.5);
    --output-border: rgba(255, 255, 255, 0.2);
    --output-placeholder: #475569;
    
    --success-color: #22c55e;
    --error-color: #f87171;
}

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

html {
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(to bottom, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0.5rem 1rem 2rem 1rem;
    line-height: 1.6;
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Header */
header {
    margin-bottom: 2rem;
    margin-top: 0;
    position: relative;
}

.header-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.header-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
    width: 100%;
}

.logo-container {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    width: 100%;
}

.logo {
    width: 400px;
    height: 400px;
    object-fit: contain;
    transition: transform 0.3s ease;
    display: block;
    filter: brightness(0);
    margin-bottom: -1rem;
}

[data-theme="dark"] .logo {
    filter: brightness(0) invert(1);
}

.logo:hover {
    transform: scale(1.05);
}

.header-text {
    display: flex;
    flex-direction: column;
    margin-top: -1.5rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 25%, #ec4899 50%, #f59e0b 75%, #6366f1 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 5s ease infinite;
    transition: all var(--transition-speed) ease;
}

[data-theme="dark"] header h1 {
    background: linear-gradient(135deg, #818cf8 0%, #a78bfa 25%, #f472b6 50%, #fbbf24 75%, #818cf8 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
    transition: color var(--transition-speed) ease;
}

/* Theme Toggle */
.stats-display {
    position: absolute;
    top: 0;
    left: 0;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    font-size: 0.875rem;
    color: var(--text-secondary);
    box-shadow: var(--card-shadow);
    white-space: nowrap;
    z-index: 10;
}

.stats-display span {
    color: var(--text-primary);
    font-weight: 600;
}

.theme-toggle {
    position: absolute;
    top: 0;
    right: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
    box-shadow: var(--card-shadow);
    flex-shrink: 0;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-color: var(--border-focus);
}

.theme-toggle:active {
    transform: translateY(0);
}

.theme-icon {
    position: absolute;
    width: 20px;
    height: 20px;
    stroke: var(--text-primary);
    transition: opacity var(--transition-speed) ease, transform 0.3s ease;
}

.theme-icon.moon-icon {
    opacity: 1;
}

.theme-icon.sun-icon {
    opacity: 0;
}

[data-theme="light"] .theme-icon.moon-icon {
    opacity: 0;
}

[data-theme="light"] .theme-icon.sun-icon {
    opacity: 1;
}

.theme-toggle:hover .theme-icon {
    transform: rotate(15deg) scale(1.1);
}

/* Main Layout */
main {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    width: 100%;
    overflow-x: hidden;
}

/* Cards */
.card {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(20px);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-speed) ease;
}

.card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

[data-theme="dark"] .card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
}

.card h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.01em;
    transition: color var(--transition-speed) ease;
}

.card-header-with-help {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-header-with-help h2 {
    margin-bottom: 0;
}

.btn-help {
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--btn-secondary-bg);
    border: 1.5px solid var(--btn-secondary-border);
    border-radius: 8px;
    color: var(--btn-secondary-text);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-help:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
}

.btn-help svg {
    stroke: currentColor;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: color var(--transition-speed) ease;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-speed) ease;
}

.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    padding-right: 2.5rem;
    background: var(--select-bg);
    border: 1.5px solid var(--input-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    line-height: normal;
    transition: border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
    appearance: none !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    cursor: pointer;
    background-image: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

.form-group select::-ms-expand {
    display: none !important;
}

/* Arrow for select dropdowns - centered in the select button */
.form-group:has(select)::after {
    content: '';
    position: absolute;
    right: 1rem;
    top: calc(0.9375rem * 1.6 + 0.5rem + 0.875rem + 0.5em + 3px);
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-tertiary);
    pointer-events: none;
    z-index: 10;
}

/* Ensure no duplicate arrows - hide any browser default */
.form-group select option {
    background: var(--input-bg);
}

.form-group input:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--input-focus-bg);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.08);
}

.form-group select:focus {
    outline: none;
    border-color: var(--border-focus);
    background-color: var(--select-bg);
    background-image: none !important;
    backdrop-filter: none !important;
    box-shadow: none;
}

.form-group select:hover {
    border-color: var(--input-border);
    background-color: var(--select-hover-bg);
    background-image: none !important;
    backdrop-filter: none !important;
}

.form-group select:active {
    border-color: var(--border-focus);
    background-color: var(--select-bg);
    background-image: none !important;
    backdrop-filter: none !important;
}

[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group select:hover,
[data-theme="dark"] .form-group select:active {
    background-image: none !important;
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

.input-with-examples {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.quick-examples {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.example-label {
    color: var(--text-tertiary);
    font-weight: 500;
}

.example-btn {
    padding: 0.25rem 0.75rem;
    background: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    border-radius: 6px;
    color: var(--btn-secondary-text);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-family: inherit;
}

.example-btn:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
}

.trending-topics {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.trending-label {
    color: var(--text-tertiary);
    font-weight: 500;
    font-size: 0.8125rem;
}

.trending-btn {
    padding: 0.25rem 0.75rem;
    background: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    border-radius: 6px;
    color: var(--btn-secondary-text);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-family: inherit;
    opacity: 0.85;
}

.trending-btn:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
    opacity: 1;
}

[data-theme="dark"] .form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 1rem;
    background: var(--btn-secondary-bg);
    border: 1.5px solid var(--btn-secondary-border);
    border-radius: 10px;
    color: var(--btn-secondary-text);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-family: inherit;
    box-shadow: none;
    letter-spacing: 0.01em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary svg {
    stroke: currentColor;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: none;
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-copy {
    padding: 0.625rem 1.25rem;
    background: var(--btn-secondary-bg);
    border: 1.5px solid var(--btn-secondary-border);
    border-radius: 8px;
    color: var(--btn-secondary-text);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-copy svg {
    stroke: currentColor;
}

.btn-copy:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
}

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

.btn-secondary {
    padding: 0.625rem 1rem;
    background: var(--btn-secondary-bg);
    border: 1.5px solid var(--btn-secondary-border);
    border-radius: 8px;
    color: var(--btn-secondary-text);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.btn-secondary svg {
    stroke: currentColor;
    fill: currentColor;
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
}

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

.btn-secondary.btn-clear {
    color: var(--error-color);
    border-color: rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.1);
}

.btn-secondary.btn-clear:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.5);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--btn-secondary-bg);
    border: 1.5px solid var(--btn-secondary-border);
    border-radius: 8px;
    color: var(--btn-secondary-text);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon svg {
    stroke: currentColor;
}

.btn-icon:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-1px);
}

/* Output Card */
.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.output-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.post-stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.stat-item {
    font-weight: 500;
}

.stat-item.limit-warning {
    color: var(--error-color);
    font-weight: 600;
}

.stat-item.limit-ok {
    color: var(--success-color);
}

.post-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}

@media (min-width: 769px) {
    .post-actions {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Center Clear button under Print button */
    #clearBtn {
        grid-column: 2;
    }
}

.post-output {
    min-height: 200px;
    padding: 1.5rem;
    background: var(--output-bg);
    border: 2px dashed var(--output-border);
    border-radius: 12px;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.7;
    transition: all var(--transition-speed) ease;
}

.post-output:empty::before {
    content: "Your generated post will appear here...";
    color: var(--output-placeholder);
    font-style: italic;
}

.status-text {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-height: 1.5rem;
    font-weight: 500;
    transition: color var(--transition-speed) ease;
}

.status-text.success {
    color: var(--success-color);
}

.status-text.error {
    color: var(--error-color);
}

/* History Section */
.history-section {
    max-width: 1000px;
    margin: 3rem auto 0;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.history-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-style: italic;
    padding: 2rem;
}

.history-item {
    padding: 1rem;
    background: var(--output-bg);
    border: 1px solid var(--output-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.history-item:hover {
    background: var(--input-focus-bg);
    border-color: var(--border-focus);
    transform: translateX(4px);
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.history-item-content {
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.history-item-actions button {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition-speed) ease;
    line-height: 1;
}

.modal-close:hover {
    background: var(--btn-secondary-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.help-section {
    margin-bottom: 2rem;
}

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

.help-section h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.help-section ul {
    list-style: none;
    padding: 0;
}

.help-section li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.help-section kbd {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-family: monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hashtag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.hashtag-item {
    padding: 0.5rem 1rem;
    background: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    border-radius: 20px;
    color: var(--btn-secondary-text);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    font-weight: 500;
}

.hashtag-item:hover {
    background: var(--btn-secondary-hover-bg);
    border-color: var(--border-focus);
    transform: translateY(-2px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Footer */
footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 0.875rem;
    transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.usage-counter {
    font-weight: 600;
    color: var(--text-secondary);
}

.usage-counter span {
    color: var(--btn-secondary-text);
}

.footer-links {
    margin-top: 1rem;
    font-size: 0.875rem;
}

.footer-link {
    color: var(--text-tertiary);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color var(--transition-speed) ease;
}

.footer-link:hover {
    color: var(--text-secondary);
}

.footer-separator {
    color: var(--text-tertiary);
}

.btn-hashtag-copy {
    margin-top: 1rem;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    header,
    .form-card,
    .post-actions,
    .history-section,
    footer,
    .output-actions,
    .post-stats {
        display: none;
    }
    
    .output-card {
        box-shadow: none;
        border: none;
        page-break-inside: avoid;
    }
    
    .post-output {
        border: 1px solid #000;
        background: white;
        color: black;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }

    .header-content {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        padding: 0;
    }

    .header-brand {
        width: 100%;
        gap: 0.5rem;
        max-width: 100%;
    }

    .logo-container {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
    }

    .logo {
        width: min(250px, 80vw);
        height: min(250px, 80vw);
        max-width: 100%;
    }

    .stats-display {
        top: 0.5rem;
        left: 0.5rem;
        font-size: 0.8rem;
        padding: 0.6rem 0.8rem;
    }

    .theme-toggle {
        top: 0.5rem;
        right: 0.5rem;
        width: 44px;
        height: 44px;
    }

    .card {
        padding: 1.5rem;
        max-width: 100%;
        overflow-x: hidden;
    }

    body {
        padding: 0.5rem 0.75rem 1.5rem 0.75rem;
        overflow-x: hidden;
    }

    header {
        margin-bottom: 1.5rem;
        padding-top: 0.5rem;
    }

    .post-actions {
        grid-template-columns: 1fr;
    }

    .output-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .subtitle {
        text-align: center;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .logo {
        width: min(200px, 75vw);
        height: min(200px, 75vw);
    }

    .subtitle {
        font-size: 0.9rem;
        padding: 0 0.5rem;
    }

    .card {
        padding: 1.25rem;
    }

    body {
        padding: 0.5rem 0.5rem 1.5rem 0.5rem;
    }

    .stats-display {
        top: 0.25rem;
        left: 0.25rem;
        font-size: 0.75rem;
        padding: 0.5rem 0.6rem;
    }

    .theme-toggle {
        top: 0.25rem;
        right: 0.25rem;
        width: 40px;
        height: 40px;
    }

    .theme-icon {
        width: 18px;
        height: 18px;
    }

    .output-actions {
        gap: 0.375rem;
    }

    .btn-icon {
        width: 32px;
        height: 32px;
    }
}