/* Shared look for every Arisphere tool. Colours match arisphere.net. */
:root {
    --primary: #d97706;
    --primary-dark: #b45309;
    --primary-light: #fbbf24;
    --danger: #dc2626;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --white: #ffffff;
    --surface: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.1);
    --gradient-1: linear-gradient(135deg, #d97706 0%, #ea580c 50%, #dc2626 100%);
    --radius: 12px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font);
    background-color: var(--dark);
    color: var(--gray-300);
    line-height: 1.6;
}

a {
    color: var(--primary-light);
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--border);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
}

.site-logo img {
    height: 28px;
    width: auto;
}

.site-header nav {
    display: flex;
    gap: 18px;
    font-size: 0.95rem;
}

.site-header nav a {
    color: var(--gray-300);
    text-decoration: none;
}

.site-header nav a:hover {
    color: var(--primary-light);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--dark-light);
    color: var(--gray-300);
    font: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--white);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-1);
    border-color: transparent;
    color: var(--white);
}

.btn:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 2px;
}

.site-footer {
    padding: 24px 20px;
    text-align: center;
    color: var(--gray-400);
    font-size: 0.85rem;
}

/* Form-style tools: a column of controls next to a live preview. */
.tool-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 20px 16px;
}

.tool-main h1 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 4px;
}

.tool-intro {
    color: var(--gray-400);
    margin-bottom: 24px;
}

.tool-layout {
    display: grid;
    grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.panel {
    padding: 20px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
}

.panel + .panel {
    margin-top: 16px;
}

.panel h2 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 12px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
    font-size: 0.9rem;
}

.form-field:last-child {
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.form-row .form-field {
    margin-bottom: 0;
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field input[type="url"],
.form-field input[type="password"],
.form-field input[type="number"],
.form-field select,
.form-field textarea {
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--dark);
    color: var(--white);
    font: inherit;
}

.form-field textarea {
    min-height: 90px;
    resize: vertical;
}

.form-field input[type="color"] {
    width: 100%;
    height: 38px;
    padding: 2px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--dark);
    cursor: pointer;
}

.form-field input[type="range"] {
    accent-color: var(--primary);
}

.check {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    cursor: pointer;
}

.check input {
    accent-color: var(--primary);
}

.hint {
    color: var(--gray-400);
    font-size: 0.8rem;
}

.warning {
    color: var(--primary-light);
    font-size: 0.85rem;
}

.warning:empty {
    display: none;
}

/* Segmented control used for picking a mode. */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 4px;
    margin-bottom: 16px;
    border-radius: 10px;
    background: var(--dark);
    border: 1px solid var(--border);
}

.tabs button {
    flex: 1;
    padding: 6px 10px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--gray-300);
    font: inherit;
    font-size: 0.9rem;
    cursor: pointer;
}

.tabs button[aria-selected="true"] {
    background: var(--primary);
    color: var(--white);
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.privacy-line {
    margin-top: 16px;
    color: var(--gray-400);
    font-size: 0.85rem;
}

@media (max-width: 760px) {
    .tool-layout {
        grid-template-columns: 1fr;
    }

    /* On phones, show the result first so changes are visible. */
    .tool-layout .preview-panel {
        order: -1;
    }

    .tool-main {
        padding-top: 20px;
    }
}