/* Sentence Rewriter Tool - Essential Utilities + Additional Styles */

/* Essential Tailwind Utilities for Sentence Rewriter */
.min-h-screen { min-height: 100vh; }
.bg-gradient-to-b { background-image: linear-gradient(to bottom, var(--tw-gradient-stops)); }
.from-indigo-50 { --tw-gradient-from: #eef2ff; --tw-gradient-to: rgb(238 242 255 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-white { --tw-gradient-to: #fff; }
.pt-32 { padding-top: 8rem; }
.pt-28 { padding-top: 7rem; }
.pt-24 { padding-top: 6rem; }
.pt-20 { padding-top: 5rem; }
.pb-20 { padding-bottom: 5rem; }
.container { width: 100%; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.max-w-6xl { max-width: 72rem; }
.text-center { text-align: center; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-16 { margin-bottom: 4rem; }
.mt-20 { margin-top: 5rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-auto { margin-top: auto; }
.inline-flex { display: inline-flex; }
.items-center { align-items: center; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-gray-500 { color: #6b7280; }
.text-gray-600 { color: #4b5563; }
.text-gray-700 { color: #374151; }
.text-gray-900 { color: #111827; }
.text-indigo-600 { color: #4f46e5; }
.hover\:text-indigo-600:hover { color: #4f46e5; }
.transition-colors { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.w-5 { width: 1.25rem; }
.h-5 { height: 1.25rem; }
.w-6 { width: 1.5rem; }
.h-6 { height: 1.5rem; }
.w-10 { width: 2.5rem; }
.h-10 { height: 2.5rem; }
.w-12 { width: 3rem; }
.h-12 { height: 3rem; }
.mx-2 { margin-left: 0.5rem; margin-right: 0.5rem; }
.text-gray-400 { color: #9ca3af; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.bg-clip-text { -webkit-background-clip: text; background-clip: text; }
.text-transparent { color: transparent; }
.bg-gradient-to-r { background-image: linear-gradient(to right, var(--tw-gradient-stops)); }
.from-indigo-600 { --tw-gradient-from: #4f46e5; --tw-gradient-to: rgb(79 70 229 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-purple-600 { --tw-gradient-to: #9333ea; }
.max-w-3xl { max-width: 48rem; }
.bg-white { background-color: #fff; }
.rounded-2xl { border-radius: 1rem; }
.shadow-xl { box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.border { border-width: 1px; }
.border-gray-200 { border-color: #e5e7eb; }
.border-gray-300 { border-color: #d1d5db; }
.border-indigo-200 { border-color: #c7d2fe; }
.border-indigo-600 { border-color: #4f46e5; }
.border-green-200 { border-color: #bbf7d0; }
.border-red-200 { border-color: #fecaca; }
.overflow-hidden { overflow: hidden; }
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.divide-y { border-collapse: separate; }
.divide-y > :not([hidden]) ~ :not([hidden]) { border-top-width: 1px; border-color: #e5e7eb; }
.divide-x { border-collapse: separate; }
.divide-x > :not([hidden]) ~ :not([hidden]) { border-left-width: 1px; border-color: #e5e7eb; }
.divide-gray-200 > :not([hidden]) ~ :not([hidden]) { border-color: #e5e7eb; }
.col-span-2 { grid-column: span 2 / span 2; }
.p-6 { padding: 1.5rem; }
.p-5 { padding: 1.25rem; }
.p-4 { padding: 1rem; }
.p-3 { padding: 0.75rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-1\.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.from-gray-50 { --tw-gradient-from: #f9fafb; --tw-gradient-to: rgb(249 250 251 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.space-y-6 > :not([hidden]) ~ :not([hidden]) { margin-top: 1.5rem; }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { margin-top: 1rem; }
.space-y-3 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.75rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.text-indigo-500 { color: #6366f1; }
.text-indigo-700 { color: #4338ca; }
.text-indigo-800 { color: #3730a3; }
.text-indigo-900 { color: #312e81; }
.text-green-600 { color: #16a34a; }
.text-green-700 { color: #15803d; }
.text-green-900 { color: #14532d; }
.w-full { width: 100%; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.focus\:ring-2:focus { box-shadow: 0 0 0 2px #4f46e5; }
.focus\:ring-indigo-500:focus { box-shadow: 0 0 0 2px #6366f1; }
.focus\:border-indigo-500:focus { border-color: #6366f1; }
.bg-gray-50 { background-color: #f9fafb; }
.bg-gray-100 { background-color: #f3f4f6; }
.bg-indigo-50 { background-color: #eef2ff; }
.bg-indigo-100 { background-color: #e0e7ff; }
.bg-indigo-600 { background-color: #4f46e5; }
.bg-green-50 { background-color: #f0fdf4; }
.bg-green-100 { background-color: #dcfce7; }
.bg-red-50 { background-color: #fef2f2; }
.border-indigo-100 { border-color: #e0e7ff; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-full { border-radius: 9999px; }
.rounded-md { border-radius: 0.375rem; }
.rounded-l-md { border-top-left-radius: 0.375rem; border-bottom-left-radius: 0.375rem; }
.rounded-r-md { border-top-right-radius: 0.375rem; border-bottom-right-radius: 0.375rem; }
.h-40 { height: 10rem; }
.resize-none { resize: none; }
.justify-between { justify-content: space-between; }
.flex-shrink-0 { flex-shrink: 0; }
.mt-0\.5 { margin-top: 0.125rem; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.relative { position: relative; }
.flex-start { align-items: flex-start; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.disabled\:opacity-70:disabled { opacity: 0.7; }
.disabled\:cursor-not-allowed:disabled { cursor: not-allowed; }
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.hover\:shadow-md:hover { box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); }
.hover\:bg-gray-50:hover { background-color: #f9fafb; }
.hover\:bg-green-50:hover { background-color: #f0fdf4; }
.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.shadow-sm { box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.shadow-inner { box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05); }
.whitespace-pre-wrap { white-space: pre-wrap; }
.min-h-\[200px\] { min-height: 200px; }
.animate-spin { animation: spin 1s linear infinite; }
.border-t-transparent { border-top-color: transparent; }
.list-disc { list-style-type: disc; }
.ml-6 { margin-left: 1.5rem; }

/* Responsive utilities */
@media (min-width: 640px) {
    .sm\:flex-row { flex-direction: row; }
}

@media (min-width: 768px) {
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:divide-x > :not([hidden]) ~ :not([hidden]) { border-left-width: 1px; border-color: #e5e7eb; }
    .lg\:divide-y-0 > :not([hidden]) ~ :not([hidden]) { border-top-width: 0; }
}

/* Additional Custom Styles */

/* Language and Tone Selection Grid */
.language-tone-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.language-option,
.tone-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
    font-size: 0.875rem;
    font-weight: 500;
}

.language-option:hover,
.tone-option:hover {
    border-color: #4f46e5;
    background: #f8fafc;
}

.language-option.active,
.tone-option.active {
    border-color: #4f46e5;
    background: #4f46e5;
    color: white;
}

.language-option svg,
.tone-option svg {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

/* Character Counter */
.character-counter {
    font-size: 0.75rem;
    color: #6b7280;
    text-align: right;
    margin-top: 0.25rem;
}

.character-counter.warning {
    color: #f59e0b;
}

.character-counter.error {
    color: #ef4444;
}

/* Usage Limit Display */
.usage-limit {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.usage-limit.warning {
    background: #fffbeb;
    border-color: #fed7aa;
    color: #92400e;
}

.usage-limit.error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.usage-count {
    font-weight: 600;
}

/* Copy Button States */
.copy-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #f3f4f6;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-btn:hover {
    background: #e5e7eb;
}

.copy-btn.copied {
    background: #dcfce7;
    border-color: #bbf7d0;
    color: #166534;
}

.copy-btn.copied svg {
    color: #16a34a;
}

/* Error Message Styling */
.error-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 0.5rem;
    color: #991b1b;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.error-message svg {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    color: #dc2626;
}

/* Loading Spinner for Generate Button */
.loading-spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Usage Guide Specific Styles */
.usage-guide {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #e5e7eb;
    overflow: hidden;
}

.usage-guide-nav {
    display: flex;
    border-bottom: 1px solid #e5e7eb;
}

.usage-guide-tab {
    flex: 1;
    padding: 1rem;
    background: #f9fafb;
    border: none;
    cursor: pointer;
    font-weight: 500;
    color: #6b7280;
    transition: all 0.2s ease;
    border-right: 1px solid #e5e7eb;
}

.usage-guide-tab:last-child {
    border-right: none;
}

.usage-guide-tab.active {
    background: white;
    color: #4f46e5;
    border-bottom: 2px solid #4f46e5;
}

.usage-guide-tab:hover:not(.active) {
    background: #f3f4f6;
    color: #374151;
}

.usage-guide-content {
    padding: 2rem;
}

/* Tips Section */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.tip-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: #10b981;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.tip-content h4 {
    font-weight: 600;
    color: #111827;
    margin: 0 0 0.5rem 0;
}

.tip-content p {
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

/* Examples Carousel */
.examples-carousel {
    position: relative;
}

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

.examples-counter {
    font-size: 0.875rem;
    color: #6b7280;
}

.carousel-controls {
    display: flex;
    gap: 0.5rem;
}

.carousel-btn {
    width: 2rem;
    height: 2rem;
    border-radius: 0.375rem;
    border: 1px solid #d1d5db;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.carousel-btn:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
}

.carousel-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.carousel-btn svg {
    width: 1rem;
    height: 1rem;
    color: #6b7280;
}

.example-item {
    display: none;
}

.example-item.active {
    display: block;
}

.example-before,
.example-after {
    margin-bottom: 1rem;
}

.example-before h4,
.example-after h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin: 0 0 0.5rem 0;
}

.example-text {
    padding: 1rem;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    color: #374151;
    line-height: 1.5;
    margin: 0;
}

/* How It Works Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step-item {
    text-align: center;
}

.step-number {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    margin: 0 auto 1rem;
}

.step-item h4 {
    font-weight: 600;
    color: #111827;
    margin: 0 0 0.5rem 0;
}

.step-item p {
    color: #6b7280;
    margin: 0;
    line-height: 1.5;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .language-tone-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .language-option,
    .tone-option {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .usage-guide-nav {
        flex-direction: column;
    }
    
    .usage-guide-tab {
        border-right: none;
        border-bottom: 1px solid #e5e7eb;
    }
    
    .usage-guide-tab:last-child {
        border-bottom: none;
    }
    
    .usage-guide-content {
        padding: 1.5rem;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Pattern Background for Hero Section */
.hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='white' fill-opacity='0.1'/%3E%3C/svg%3E");
}