/* ==========================================================================
   AI Device Diagnosis — Frontend CSS
   Color scheme: #E76504 (metallic orange) + white + metallic silver
   ========================================================================== */

/* ── CSS Variables ────────────────────────────────────────────────────────── */
:root {
    --aidd-primary:        #E76504;
    --aidd-primary-dark:   #c05200;
    --aidd-primary-light:  #ff8c2d;
    --aidd-primary-glow:   rgba(231, 101, 4, 0.20);
    --aidd-white:          #ffffff;
    --aidd-bg:             #f7f8fa;
    --aidd-card-bg:        #ffffff;
    --aidd-text:           #1e1e1e;
    --aidd-text-muted:     #666666;
    --aidd-border:         #e2e4e9;
    --aidd-radius:         14px;
    --aidd-radius-sm:      8px;
    --aidd-shadow:         0 4px 20px rgba(0,0,0,0.08);
    --aidd-shadow-lg:      0 10px 40px rgba(0,0,0,0.14);

    /* Header background */
    --aidd-header-bg:       #E76504;
}

/* ── Wrapper ──────────────────────────────────────────────────────────────── */
.aidd-wrapper {
    max-width: 820px;
    margin: 0 auto;
    background: var(--aidd-card-bg);
    border-radius: var(--aidd-radius);
    box-shadow: var(--aidd-shadow-lg);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--aidd-text);
    position: relative;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
.aidd-header {
    background: var(--aidd-header-bg);
    padding: 36px 40px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.aidd-header-icon {
    font-size: 52px;
    line-height: 1;
    margin-bottom: 12px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,.4));
    position: relative;
    z-index: 1;
}
.aidd-title {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin: 0 0 8px;
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.aidd-subtitle {
    color: rgba(255,255,255,.8);
    font-size: 1rem;
    margin: 0;
    position: relative;
    z-index: 1;
}

/* ── Progress ─────────────────────────────────────────────────────────────── */
.aidd-progress-wrap {
    padding: 20px 40px 0;
    background: var(--aidd-white);
    border-bottom: 1px solid var(--aidd-border);
    padding-bottom: 16px;
}
.aidd-progress-bar {
    height: 6px;
    background: var(--aidd-border);
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 16px;
}
.aidd-progress-fill {
    height: 100%;
    background: var(--aidd-primary);
    border-radius: 99px;
    transition: width .5s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 0 10px var(--aidd-primary-glow);
}
.aidd-steps-indicator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin-bottom: 8px;
}
.aidd-steps-indicator::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0; right: 0;
    height: 2px;
    background: var(--aidd-border);
    transform: translateY(-50%);
    z-index: 0;
}
.aidd-step-dot {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--aidd-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: var(--aidd-text-muted);
    border: 2px solid var(--aidd-border);
    transition: all .3s ease;
    position: relative;
    z-index: 1;
    cursor: default;
}
.aidd-step-dot .aidd-step-check { display: none; }
.aidd-step-dot.active {
    background: var(--aidd-primary);
    border-color: var(--aidd-primary);
    color: #fff;
    box-shadow: 0 0 0 4px var(--aidd-primary-glow);
    transform: scale(1.15);
}
.aidd-step-dot.done {
    background: var(--aidd-primary);
    border-color: var(--aidd-primary);
    color: #fff;
}
.aidd-step-dot.done .aidd-step-num  { display: none; }
.aidd-step-dot.done .aidd-step-check { display: block; }
.aidd-step-label {
    text-align: center;
    font-size: 13px;
    color: var(--aidd-text-muted);
    font-weight: 500;
}

/* ── Step Panels ──────────────────────────────────────────────────────────── */
.aidd-step-panel {
    display: none;
    padding: 32px 40px;
    animation: aidd-fadeIn .35s ease;
}
.aidd-step-panel.active { display: block; }
@keyframes aidd-fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0);    }
}
.aidd-step-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--aidd-text);
    position: relative;
    padding-bottom: 12px;
}
.aidd-step-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 48px; height: 3px;
    background: var(--aidd-primary);
    border-radius: 99px;
}

/* ── Device Category Grid ─────────────────────────────────────────────────── */
.aidd-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}
.aidd-category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 18px 10px;
    background: #ffffff;
    border: 2px solid var(--aidd-border);
    border-radius: var(--aidd-radius);
    cursor: pointer;
    transition: all .25s ease;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: #000000;
    text-align: center;
}
.aidd-category-card:hover {
    border-color: var(--aidd-primary);
    background: #fff5ec;
    transform: translateY(-3px);
    box-shadow: 0 6px 18px var(--aidd-primary-glow);
    color: var(--aidd-primary);
}
.aidd-category-card:hover .aidd-cat-icon {
    color: var(--aidd-primary);
    transform: scale(1.15);
    transition: transform .2s ease, color .2s ease;
}
.aidd-category-card.selected {
    border-color: var(--aidd-primary);
    background: #fff5ec;
    box-shadow: 0 0 0 3px var(--aidd-primary-glow), 0 6px 20px var(--aidd-primary-glow);
    transform: translateY(-3px);
    color: var(--aidd-primary);
}
.aidd-category-card.selected .aidd-cat-icon {
    color: var(--aidd-primary);
}
.aidd-category-card.selected .aidd-cat-label {
    color: var(--aidd-primary);
    font-weight: 700;
}
.aidd-cat-icon {
    font-size: 32px;
    line-height: 1;
    color: #000000;
    transition: transform .2s ease, color .2s ease;
}
.aidd-cat-label { font-size: 12px; line-height: 1.2; }

/* ── Quick Issues ─────────────────────────────────────────────────────────── */
.aidd-quick-issues { margin-bottom: 20px; }
.aidd-label-sm {
    font-size: 12px;
    font-weight: 600;
    color: var(--aidd-text-muted);
    text-transform: uppercase;
    letter-spacing: .6px;
    margin: 0 0 8px;
}
.aidd-quick-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.aidd-quick-issue-btn {
    padding: 7px 14px;
    background: var(--aidd-bg);
    border: 1.5px solid var(--aidd-border);
    border-radius: 99px;
    font-size: 13px;
    cursor: pointer;
    transition: all .2s ease;
    font-family: inherit;
    color: var(--aidd-text);
}
.aidd-quick-issue-btn:hover,
.aidd-quick-issue-btn.active {
    background: var(--aidd-primary);
    border-color: var(--aidd-primary);
    color: #fff;
}

/* ── Fields ───────────────────────────────────────────────────────────────── */
.aidd-fields-group {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.aidd-field-wrap { display: flex; flex-direction: column; gap: 6px; }
.aidd-field-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--aidd-text);
}
.aidd-required { color: var(--aidd-primary); margin-left: 2px; }
.aidd-input,
.aidd-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--aidd-border);
    border-radius: var(--aidd-radius-sm);
    font-size: 15px;
    font-family: inherit;
    color: var(--aidd-text);
    background: var(--aidd-white);
    transition: border-color .2s ease, box-shadow .2s ease;
    box-sizing: border-box;
}
.aidd-input:focus,
.aidd-select:focus {
    outline: none;
    border-color: var(--aidd-primary);
    box-shadow: 0 0 0 3px var(--aidd-primary-glow);
}
textarea.aidd-input { resize: vertical; min-height: 100px; }

/* Radio / checkbox groups */
.aidd-radio-group { display: flex; flex-wrap: wrap; gap: 10px; }
.aidd-radio-label {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 16px;
    border: 2px solid var(--aidd-border);
    border-radius: 99px;
    cursor: pointer;
    font-size: 14px;
    transition: all .2s;
}
.aidd-radio-label:has(input:checked) {
    border-color: var(--aidd-primary);
    background: var(--aidd-primary-glow);
}
.aidd-radio-label input { display: none; }

/* Helper checkboxes */
.aidd-helper-checks { margin-top: 20px; }
.aidd-check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-top: 8px;
}
.aidd-check-label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--aidd-bg);
    border: 2px solid var(--aidd-border);
    border-radius: var(--aidd-radius-sm);
    cursor: pointer;
    font-size: 13px;
    transition: all .2s;
}
.aidd-check-label:has(input:checked) {
    background: #fff;
    border-color: var(--aidd-primary);
    color: var(--aidd-primary);
}
.aidd-check-label input[type=checkbox] {
    accent-color: var(--aidd-primary);
    width: 16px; height: 16px;
}

/* ── Review Box ───────────────────────────────────────────────────────────── */
.aidd-review-box {
    background: var(--aidd-bg);
    border: 2px solid var(--aidd-border);
    border-radius: var(--aidd-radius);
    padding: 20px 24px;
    margin-bottom: 24px;
}
.aidd-review-item {
    display: flex;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--aidd-border);
    font-size: 14px;
}
.aidd-review-item:last-child { border-bottom: none; }
.aidd-review-key {
    font-weight: 700;
    color: var(--aidd-text-muted);
    min-width: 160px;
    flex-shrink: 0;
}
.aidd-review-val { color: var(--aidd-text); }

/* ── Navigation Buttons ───────────────────────────────────────────────────── */
.aidd-step-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--aidd-border);
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.aidd-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--aidd-radius-sm);
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: all .25s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.aidd-btn-primary {
    background: #E76504;
    color: #fff;
    box-shadow: 0 4px 14px rgba(231,101,4,.4);
}
.aidd-btn-primary:hover {
    background: #c05200;
    transform: translateY(-2px);
    box-shadow: 0 7px 20px rgba(231,101,4,.5);
}
.aidd-btn-primary:disabled {
    opacity: .5;
    cursor: not-allowed;
    transform: none;
}
.aidd-btn-secondary {
    background: #e8e8e8;
    color: #333;
    box-shadow: 0 3px 10px rgba(0,0,0,.10);
}
.aidd-btn-secondary:hover {
    background: #d4d4d4;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0,0,0,.16);
}

/* Submit button pulse */
#aidd-submit-btn {
    font-size: 16px;
    padding: 14px 36px;
    letter-spacing: .3px;
}
.aidd-pulse { animation: aidd-pulse 2s infinite; }
@keyframes aidd-pulse {
    0%   { box-shadow: 0 0 0 0   rgba(231,101,4,.5); }
    70%  { box-shadow: 0 0 0 12px rgba(231,101,4,0);  }
    100% { box-shadow: 0 0 0 0   rgba(231,101,4,0);  }
}

/* ── Loading Panel ────────────────────────────────────────────────────────── */
#aidd-step-loading {
    text-align: center;
    padding: 60px 40px;
}
.aidd-loading-box { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.aidd-spinner {
    position: relative;
    width: 80px; height: 80px;
}
.aidd-spinner-ring {
    width: 80px; height: 80px;
    border: 4px solid var(--aidd-border);
    border-top-color: var(--aidd-primary);
    border-radius: 50%;
    animation: aidd-spin 1s linear infinite;
    position: absolute; top: 0; left: 0;
}
@keyframes aidd-spin { to { transform: rotate(360deg); } }
.aidd-spinner-icon {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%);
    font-size: 30px;
    animation: aidd-bounce .6s ease infinite alternate;
}
@keyframes aidd-bounce { from { transform: translate(-50%,-50%) scale(.9); } to { transform: translate(-50%,-50%) scale(1.1); } }
.aidd-loading-steps { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; text-align: left; }
.aidd-load-step {
    font-size: 14px;
    color: var(--aidd-text-muted);
    padding: 8px 16px;
    border-radius: 6px;
    opacity: .4;
    transition: all .4s;
}
.aidd-load-step.active {
    color: var(--aidd-primary);
    background: var(--aidd-primary-glow);
    opacity: 1;
    font-weight: 600;
}
.aidd-load-step.done {
    opacity: .7;
    color: #4caf50;
}
.aidd-load-step.done::before { content: '\f00c\00a0'; font-family: 'Font Awesome 6 Free'; font-weight: 900; }

/* ── Result Panel ─────────────────────────────────────────────────────────── */
#aidd-step-result { padding: 32px 40px 40px; }
.aidd-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}
.aidd-result-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: #e8f5e9;
    color: #2e7d32;
    border-radius: 99px;
    font-size: 14px;
    font-weight: 700;
    border: 1.5px solid #a5d6a7;
}
.aidd-result-meta {
    font-size: 12px;
    color: var(--aidd-text-muted);
    background: var(--aidd-bg);
    padding: 6px 14px;
    border-radius: 99px;
    border: 1px solid var(--aidd-border);
}
.aidd-result-body {
    background: var(--aidd-bg);
    border: 1px solid var(--aidd-border);
    border-radius: var(--aidd-radius);
    padding: 28px 32px;
    margin-bottom: 24px;
    line-height: 1.75;
    font-size: 15px;
    overflow-wrap: break-word;
}
/* Markdown rendering */
.aidd-result-body h1,
.aidd-result-body h2,
.aidd-result-body h3 {
    color: var(--aidd-text);
    margin: 1.2em 0 .5em;
}
.aidd-result-body h2 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--aidd-primary);
    border-bottom: 2px solid var(--aidd-border);
    padding-bottom: 4px;
}
.aidd-result-body h3 { font-size: 1rem; font-weight: 700; }
.aidd-result-body strong { color: var(--aidd-primary-dark); }
.aidd-result-body ol,
.aidd-result-body ul { padding-left: 1.5em; margin: .5em 0 1em; }
.aidd-result-body li { margin-bottom: .4em; }
.aidd-result-body p  { margin: .6em 0; }
.aidd-result-body hr {
    border: none;
    border-top: 2px solid var(--aidd-border);
    margin: 1.2em 0;
}
/* Emoji section header blocks */
.aidd-section-block {
    background: #fff;
    border: 1.5px solid var(--aidd-border);
    border-left: 5px solid var(--aidd-primary);
    border-radius: 0 var(--aidd-radius-sm) var(--aidd-radius-sm) 0;
    padding: 16px 20px;
    margin: 16px 0;
}
.aidd-section-block h3 {
    margin: 0 0 10px;
    font-size: 15px;
    color: var(--aidd-primary);
}

/* ── Book Repair CTA ─────────────────────────────────────────────────────── */
.aidd-book-cta {
    background: #E76504;
    border-radius: var(--aidd-radius);
    padding: 24px 28px;
    margin: 28px 0;
    box-shadow: 0 8px 32px rgba(231,101,4,.35);
    position: relative;
    overflow: hidden;
}
.aidd-book-cta::before {
    content: '';
    position: absolute;
    top: -40px; right: -40px;
    width: 160px; height: 160px;
    background: rgba(255,255,255,.07);
    border-radius: 50%;
    pointer-events: none;
}
.aidd-book-cta-content {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.aidd-book-cta-icon {
    font-size: 40px;
    color: rgba(255,255,255,.9);
    flex-shrink: 0;
}
.aidd-book-cta-text {
    flex: 1;
    min-width: 180px;
    color: #fff;
}
.aidd-book-cta-text strong {
    display: block;
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: -.2px;
}
.aidd-book-cta-text span {
    font-size: .95rem;
    opacity: .92;
    line-height: 1.4;
}
.aidd-book-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    background: #fff;
    color: #E76504;
    border-radius: 99px;
    font-size: 1rem;
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    animation: aidd-book-pulse 2.2s ease-in-out infinite;
}
.aidd-book-btn:hover {
    background: #1e1e1e;
    color: #fff;
    transform: scale(1.05);
    box-shadow: 0 8px 28px rgba(0,0,0,.25);
    text-decoration: none;
}
.aidd-book-arrow {
    font-size: 13px;
    transition: transform .2s ease;
}
.aidd-book-btn:hover .aidd-book-arrow {
    transform: translateX(4px);
}
@keyframes aidd-book-pulse {
    0%,100% { box-shadow: 0 4px 16px rgba(0,0,0,.15); }
    50%      { box-shadow: 0 4px 24px rgba(0,0,0,.3), 0 0 0 4px rgba(255,255,255,.3); }
}

/* ── Action Buttons ───────────────────────────────────────────────────────── */
.aidd-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}
.aidd-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--aidd-metallic-silver);
    border: 1.5px solid var(--aidd-border);
    border-radius: var(--aidd-radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all .2s;
    color: #333;
    box-shadow: 0 2px 8px rgba(0,0,0,.08), inset 0 1px 0 rgba(255,255,255,.5);
}
.aidd-action-btn:hover {
    background: var(--aidd-primary);
    color: #fff;
    border-color: var(--aidd-primary);
    transform: translateY(-2px);
    box-shadow: 0 5px 14px rgba(231,101,4,.3);
}
.aidd-action-icon { font-size: 16px; }

/* ── Email Form ───────────────────────────────────────────────────────────── */
.aidd-email-form {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background: var(--aidd-bg);
    border: 2px dashed var(--aidd-primary);
    border-radius: var(--aidd-radius);
    margin-bottom: 20px;
    flex-wrap: wrap;
    animation: aidd-fadeIn .3s ease;
}
.aidd-email-form .aidd-input { flex: 1; min-width: 220px; }

/* ── Rating ───────────────────────────────────────────────────────────────── */
.aidd-rating-section {
    border-top: 1px solid var(--aidd-border);
    padding-top: 20px;
    text-align: center;
}
.aidd-rating-section > p { font-weight: 600; margin-bottom: 10px; }
.aidd-stars { display: flex; justify-content: center; gap: 6px; margin-bottom: 10px; }
.aidd-star-btn {
    font-size: 32px;
    background: none;
    border: none;
    cursor: pointer;
    color: #ddd;
    transition: color .15s, transform .15s;
    line-height: 1;
    padding: 0;
}
.aidd-star-btn:hover,
.aidd-star-btn.active,
.aidd-star-btn.hovered {
    color: #f5a623;
    transform: scale(1.2);
}
.aidd-feedback-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 440px;
    margin: 10px auto 0;
    animation: aidd-fadeIn .3s ease;
}
.aidd-rating-thanks { font-weight: 600; color: #2e7d32; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .aidd-header   { padding: 28px 20px 20px; }
    .aidd-title    { font-size: 1.5rem; }
    .aidd-step-panel { padding: 24px 20px; }
    .aidd-progress-wrap { padding: 16px 20px 12px; }
    .aidd-category-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .aidd-category-card { padding: 12px 6px; }
    .aidd-cat-icon  { font-size: 24px; }
    .aidd-result-body { padding: 18px; font-size: 14px; }
    #aidd-step-result { padding: 20px; }
    .aidd-step-dot  { width: 28px; height: 28px; font-size: 11px; }
    .aidd-check-grid { grid-template-columns: 1fr; }
}

/* ── Print ────────────────────────────────────────────────────────────────── */
@media print {
    .aidd-header,
    .aidd-progress-wrap,
    .aidd-step-nav,
    .aidd-result-actions,
    .aidd-rating-section,
    .aidd-email-form { display: none !important; }
    .aidd-step-panel#aidd-step-result { display: block !important; }
    .aidd-wrapper { box-shadow: none; }
}