/* Shared Tool Styles - Common CSS for all tool pages */

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

:root {
    --primary: #000;
    --secondary: #666;
    --background: #fff;
    --hover: #f5f5f5;
    --accent: #0066cc;
    --border: #e0e0e0;
    --input-bg: #fafafa;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #dc3545;
    --error: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--primary);
    background: var(--background);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header & Navigation */
header {
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
}

nav a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

nav a:hover {
    color: var(--accent);
}

nav a::before {
    content: "\2190";
    transition: transform 0.2s ease;
}

nav a:hover::before {
    transform: translateX(-0.25rem);
}

/* Main Content */
main {
    flex: 1;
    padding: 3rem 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.tool-description {
    color: var(--secondary);
    margin-bottom: 3rem;
    font-size: 1.125rem;
}

/* Tool Content Sections */
.tool-content,
.tool-section,
.input-section,
.output-section,
.text-area-section,
.stats-section,
.calculator {
    background: var(--input-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.section-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary);
    margin-bottom: 1rem;
}

/* Form Elements */
textarea {
    width: 100%;
    padding: 1rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    resize: vertical;
    background: var(--background);
    transition: border-color 0.2s ease;
}

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

input[type="text"],
input[type="url"],
.search-input,
.url-input {
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    background: var(--background);
    transition: border-color 0.2s ease;
}

input[type="text"]:focus,
input[type="url"]:focus,
.search-input:focus,
.url-input:focus {
    outline: none;
    border-color: var(--accent);
}

select {
    padding: 0.5rem 2rem 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    background: var(--background);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    transition: border-color 0.2s ease;
}

select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
button {
    padding: 0.5rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--primary);
    border-radius: 0.375rem;
    background: var(--primary);
    color: var(--background);
    cursor: pointer;
    transition: all 0.2s ease;
}

button:hover:not(:disabled) {
    background: var(--background);
    color: var(--primary);
}

button:active:not(:disabled) {
    transform: translateY(1px);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.success-button:hover:not(:disabled) {
    background: var(--background);
    color: var(--success);
    border-color: var(--success);
}

.secondary-button {
    background: var(--background);
    color: var(--primary);
    border-color: var(--border);
}

.secondary-button:hover:not(:disabled) {
    background: var(--hover);
    border-color: var(--primary);
}

.button-group,
.button-container {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1rem;
}

/* Layout Helpers */
.tool-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.hidden {
    display: none;
}

/* Instructions */
.instructions {
    background: var(--background);
    padding: 1.5rem;
    border-radius: 0.375rem;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.instructions h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.instructions ol {
    list-style: none;
    padding-left: 0;
    counter-reset: step-counter;
}

.instructions li {
    padding-left: 2rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--secondary);
    counter-increment: step-counter;
}

.instructions li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Info Section */
.info-section {
    margin-top: 2rem;
    padding-top: 2rem;
}

.info-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.info-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.info-section p {
    color: var(--secondary);
    margin-bottom: 1rem;
}

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

.info-section li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
    color: var(--secondary);
}

.info-section li::before {
    content: "\2022";
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Disclaimer */
.disclaimer {
    margin-top: 2rem;
    padding: 1rem 1.25rem;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    color: var(--secondary);
}

.disclaimer a {
    color: var(--accent);
    text-decoration: none;
}

.disclaimer a:hover {
    text-decoration: underline;
}

/* Code Examples */
.code-example {
    background: var(--hover);
    padding: 1rem;
    border-radius: 0.375rem;
    font-family: monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    margin-bottom: 1rem;
}

/* Copy Success Toast */
.copy-success {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--primary);
    color: var(--background);
    padding: 1rem 1.5rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    opacity: 0;
    transform: translateY(1rem);
    transition: all 0.3s ease;
    pointer-events: none;
}

.copy-success.show {
    opacity: 1;
    transform: translateY(0);
}

/* Loading State */
.loading {
    display: none;
    align-items: center;
    gap: 0.5rem;
    color: var(--secondary);
    font-size: 0.875rem;
}

.loading.show {
    display: flex;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Error State */
.error-message {
    display: none;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 0.375rem;
}

.error-message.show {
    display: block;
}

/* Counter & Result Count */
.counter,
.result-count {
    font-size: 0.875rem;
    color: var(--secondary);
}

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

    main {
        padding: 2rem 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .tool-description {
        font-size: 1rem;
    }

    .tool-content,
    .tool-section,
    .input-section,
    .output-section,
    .text-area-section,
    .stats-section,
    .calculator {
        padding: 1.5rem;
    }

    .tool-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .button-group,
    .button-container {
        flex-wrap: wrap;
    }

    button {
        width: 100%;
    }
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --primary: #fff;
        --secondary: #999;
        --background: #000;
        --hover: #111;
        --accent: #4d94ff;
        --border: #333;
        --input-bg: #0a0a0a;
        --success: #10b981;
        --success-hover: #34d399;
        --danger: #ff6b6b;
        --error: #f87171;
    }

    textarea,
    input[type="text"],
    input[type="url"],
    .search-input,
    .url-input {
        background: #111;
        color: var(--primary);
    }

    select {
        background-color: #111;
        color: var(--primary);
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23999' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 0.75rem center;
    }

    button {
        background: var(--primary);
        color: var(--background);
    }

    button:hover:not(:disabled) {
        background: var(--background);
        color: var(--primary);
        border-color: var(--primary);
    }

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

    .success-button:hover:not(:disabled) {
        background: var(--background);
        color: var(--success);
    }

    .secondary-button {
        background: var(--background);
        color: var(--primary);
    }

    .secondary-button:hover:not(:disabled) {
        background: var(--hover);
    }

    .instructions {
        background: #0a0a0a;
    }

    .code-example {
        background: #0a0a0a;
        border: 1px solid var(--border);
    }

    .error-message {
        background: rgba(248, 113, 113, 0.1);
    }
}