/* ===== Tools Common Styles ===== */
.tool-header {
    padding: 140px 0 40px;
    text-align: center;
}

.tool-header h1 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
}

.tool-header p {
    color: #666;
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.tool-section {
    padding: 0 0 80px;
}

.tool-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0,0,0,0.06);
    max-width: 680px;
    margin: 0 auto;
}

.tool-form { display: flex; flex-direction: column; gap: 20px; }

.tool-form label {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
    display: block;
}

.tool-form input,
.tool-form select,
.tool-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid #e0e0e0;
    border-radius: 10px;
    font-family: var(--font);
    font-size: 15px;
    transition: border-color 0.2s;
}

.tool-form input:focus,
.tool-form select:focus,
.tool-form textarea:focus {
    outline: none;
    border-color: var(--orange-500);
    box-shadow: 0 0 0 3px rgba(255, 84, 0, 0.1);
}

.tool-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.tool-btn {
    padding: 14px 28px;
    background: var(--orange-500);
    color: var(--white);
    border: none;
    border-radius: 50px;
    font-family: var(--font);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.tool-btn:hover {
    background: var(--orange-600);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(255, 84, 0, 0.3);
}

.tool-result {
    margin-top: 24px;
    padding: 20px;
    background: #f8f8f8;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.06);
    display: none;
}

.tool-result.visible { display: block; }

.tool-result-label {
    font-size: 12px;
    font-weight: 600;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.tool-result-value {
    font-size: 15px;
    font-weight: 500;
    word-break: break-all;
    padding: 12px;
    background: var(--white);
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.copy-btn {
    padding: 6px 14px;
    background: var(--orange-50);
    color: var(--orange-500);
    border: 1px solid var(--orange-100);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
}

.copy-btn:hover { background: var(--orange-100); }

.qr-container {
    text-align: center;
    padding: 24px;
}

.qr-container canvas, .qr-container img {
    border-radius: 8px;
}

/* Calculator specific */
.calc-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.calc-table th, .calc-table td {
    padding: 10px 16px;
    text-align: left;
    border-bottom: 1px solid #eee;
    font-size: 14px;
}

.calc-table th {
    background: #f8f8f8;
    font-weight: 600;
    color: #555;
}

.calc-total {
    font-weight: 700;
    color: var(--orange-500);
    font-size: 16px;
}

/* Character counter */
.char-counter {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.char-stat {
    padding: 16px;
    background: var(--white);
    border-radius: 10px;
    border: 1px solid #eee;
    text-align: center;
}

.char-stat-number {
    font-size: 28px;
    font-weight: 800;
    color: var(--orange-500);
    display: block;
}

.char-stat-label {
    font-size: 12px;
    color: #999;
    font-weight: 500;
}

/* Signature preview */
.sig-preview {
    padding: 24px;
    background: var(--white);
    border-radius: 10px;
    border: 1px solid #eee;
    margin-top: 16px;
    font-family: Arial, sans-serif;
}

.sig-preview table { border-collapse: collapse; }
.sig-preview td { padding: 0 12px; vertical-align: top; }

@media (max-width: 768px) {
    .tool-form .form-row { grid-template-columns: 1fr; }
    .char-counter { grid-template-columns: 1fr; }
    .tool-card { padding: 24px; }
}