/**
 * Shared Upload Button Styles
 * 
 * Reusable styled file upload buttons for all tools.
 * Include this CSS file in any tool that has <input type="file"> elements.
 * 
 * Usage:
 *   1. Add link tag: <link rel="stylesheet" href="/tools/shared/css/upload-btn.css">
 *   2. Wrap your file input with: <label class="upload-btn" for="yourFileInput">
 *   3. Use classes: .upload-btn-icon, .upload-btn-text inside the label
 * 
 * Theme tokens come from /tools/shared/css/tool-theme.css.
 */

/* ===== Upload Button Base ===== */
.upload-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 42px;
    padding: 0 16px;
    border-radius: 10px;
    border: 1px dashed var(--border, rgba(255, 137, 78, 0.2));
    background:
        radial-gradient(circle at top, color-mix(in srgb, var(--accent, #ff7b42) 10%, transparent) 0%, transparent 50%),
        rgba(8, 8, 10, 0.24);
    color: var(--text, #f8f2ee);
    font: inherit;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.upload-btn:hover {
    border-color: var(--accent, #ff7b42);
    background:
        radial-gradient(circle at top, color-mix(in srgb, var(--accent, #ff7b42) 16%, transparent) 0%, transparent 50%),
        rgba(8, 8, 10, 0.32);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent, #ff7b42) 24%, transparent);
}

.upload-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--accent, #ff7b42) 18%, transparent);
    color: var(--accent, #ff7b42);
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
}

.upload-btn-text {
    font-weight: 600;
    font-size: 0.82rem;
}

/* ===== Upload Card (larger variant for drop zones) ===== */
.upload-card {
    display: grid;
    gap: 6px;
    align-content: center;
    justify-items: center;
    text-align: center;
    min-height: 128px;
    padding: 20px;
    border-radius: 16px;
    border: 1px dashed var(--border, rgba(255, 137, 78, 0.2));
    background:
        radial-gradient(circle at top, color-mix(in srgb, var(--accent, #ff7b42) 14%, transparent) 0%, transparent 52%),
        rgba(8, 8, 10, 0.24);
    color: var(--text, #f8f2ee);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.upload-card:hover {
    border-color: var(--accent, #ff7b42);
    background:
        radial-gradient(circle at top, color-mix(in srgb, var(--accent, #ff7b42) 20%, transparent) 0%, transparent 52%),
        rgba(8, 8, 10, 0.32);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent, #ff7b42) 30%, transparent);
}

.upload-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, 0.08);
    font-size: 22px;
    font-weight: 700;
}

.upload-card strong {
    color: var(--text, #f8f2ee);
    font-size: 0.9rem;
}

.upload-card span {
    color: var(--text-dim, #c3b1a8);
    font-size: 0.78rem;
}