/* ============================================
   DTC Manual Generator Pro - Frontend Styles
   ============================================ */

:root {
    --dtc-primary: #dc2626;
    --dtc-primary-dark: #991b1b;
    --dtc-primary-light: #fef2f2;
    --dtc-text: #111827;
    --dtc-text-light: #6b7280;
    --dtc-bg: #f9fafb;
    --dtc-white: #ffffff;
    --dtc-border: #d1d5db;
    --dtc-success: #16a34a;
    --dtc-radius: 12px;
    --dtc-shadow: 0 4px 24px rgba(0,0,0,0.08);
    --dtc-shadow-lg: 0 12px 48px rgba(0,0,0,0.15);
}

.dtc-app {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    max-width: 720px;
    margin: 0 auto;
    padding: 20px;
    color: var(--dtc-text);
}

.dtc-app * { box-sizing: border-box; }

.dtc-step { display: none; }
.dtc-step.active { display: block; animation: dtcFadeIn 0.4s ease; }

@keyframes dtcFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ====== SEARCH FORM ====== */
.dtc-search-card {
    background: var(--dtc-white);
    border-radius: var(--dtc-radius);
    box-shadow: var(--dtc-shadow);
    overflow: hidden;
    border: 1px solid #e5e7eb;
}

.dtc-search-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    padding: 28px 32px;
    text-align: center;
}

.dtc-search-header h2 {
    margin: 0 0 6px;
    font-size: 22px;
    font-weight: 700;
    color: #ffffff;
}

.dtc-search-header p {
    margin: 0;
    opacity: 0.8;
    font-size: 14px;
    color: #cbd5e1;
}

.dtc-form { padding: 28px 32px; }

.dtc-form-group { margin-bottom: 18px; }

.dtc-form-group label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--dtc-text);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dtc-form-group select,
.dtc-form-group input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--dtc-border);
    border-radius: 8px;
    font-size: 15px;
    color: var(--dtc-text);
    background: var(--dtc-white);
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
    appearance: none;
}

.dtc-form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23374151' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

.dtc-form-group select:disabled,
.dtc-form-group input:disabled {
    background-color: #f3f4f6;
    color: #9ca3af;
    cursor: not-allowed;
    border-color: #e5e7eb;
}

.dtc-form-group select:focus,
.dtc-form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--dtc-primary);
    box-shadow: 0 0 0 3px var(--dtc-primary-light);
}

/* ====== AUTOCOMPLETE ====== */
.dtc-autocomplete-wrapper { position: relative; }

.dtc-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--dtc-white);
    border: 2px solid var(--dtc-primary);
    border-top: none;
    border-radius: 0 0 8px 8px;
    max-height: 240px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.dtc-suggestions.active { display: block; }

.dtc-suggestion-item {
    padding: 10px 16px;
    cursor: pointer;
    border-bottom: 1px solid #f3f4f6;
    transition: background 0.15s;
}

.dtc-suggestion-item:hover,
.dtc-suggestion-item.selected { background: var(--dtc-primary-light); }

.dtc-suggestion-item:last-child { border-bottom: none; }

.dtc-suggestion-code {
    font-weight: 700;
    color: var(--dtc-primary);
    font-family: monospace;
    font-size: 14px;
}

.dtc-suggestion-desc {
    font-size: 12px;
    color: var(--dtc-text-light);
    margin-top: 2px;
}

/* ====== BUTTONS ====== */
.dtc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.dtc-btn-primary {
    background: var(--dtc-primary);
    color: white;
    width: 100%;
}

.dtc-btn-primary:hover:not(:disabled) {
    background: var(--dtc-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(220,38,38,0.3);
}

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

.dtc-btn-outline {
    background: var(--dtc-white);
    color: var(--dtc-primary);
    border: 2px solid var(--dtc-primary);
}

.dtc-btn-outline:hover { background: var(--dtc-primary-light); }

.dtc-btn-large { padding: 16px 32px; font-size: 17px; }

.dtc-btn-icon { font-size: 18px; }

/* ====== LOADING SCREEN ====== */
.dtc-loading-card {
    text-align: center;
    padding: 60px 32px;
    background: linear-gradient(180deg, #f8fafc, var(--dtc-white));
    border-radius: var(--dtc-radius);
    box-shadow: var(--dtc-shadow);
    border: 1px solid #e5e7eb;
    min-height: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.dtc-loading-header p { color: var(--dtc-text-light); font-size: 15px; margin: 0; }

.dtc-loading-header h2 {
    margin: 6px 0 4px;
    font-size: 24px;
    color: var(--dtc-text);
}

.dtc-loading-code { font-size: 14px !important; }

.dtc-progress-ring-container {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 32px auto;
}

.dtc-progress-ring { width: 100%; height: 100%; }

.dtc-progress-ring-fill { transition: stroke-dashoffset 0.5s ease; }

.dtc-progress-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--dtc-text);
}

.dtc-loading-msg {
    font-size: 14px;
    color: var(--dtc-primary);
    font-weight: 500;
    min-height: 20px;
    transition: opacity 0.3s;
}

.dtc-loading-warning { font-size: 12px; color: var(--dtc-text-light); margin-top: 16px; }

/* ====== RESULT / MANUAL VIEW ====== */
.dtc-result-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.dtc-btn-back {
    background: none;
    border: none;
    color: var(--dtc-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 0;
    white-space: nowrap;
}

.dtc-btn-back:hover { text-decoration: underline; }

.dtc-result-title h2 { margin: 0; font-size: 20px; }

.dtc-result-code {
    display: inline-block;
    background: var(--dtc-primary);
    color: white;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin-top: 4px;
}

/* Tabs */
.dtc-tabs {
    display: flex;
    gap: 0;
    overflow-x: auto;
    border-bottom: 2px solid #e5e7eb;
    margin-bottom: 0;
    -webkit-overflow-scrolling: touch;
}

.dtc-tab {
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--dtc-text-light);
    border: none;
    background: none;
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.dtc-tab:hover { color: var(--dtc-text); }

.dtc-tab.active { color: var(--dtc-primary); border-bottom-color: var(--dtc-primary); }

.dtc-tab.locked { color: #cbd5e1; }
.dtc-tab.locked::after { content: ' 🔒'; font-size: 11px; }

/* Manual Content */
.dtc-manual-content {
    background: var(--dtc-white);
    border-radius: 0 0 var(--dtc-radius) var(--dtc-radius);
    box-shadow: var(--dtc-shadow);
    padding: 28px 32px;
    position: relative;
    overflow: hidden;
    min-height: 300px;
    border: 1px solid #e5e7eb;
    border-top: none;
}

.dtc-manual-content h2 {
    color: #1e293b;
    font-size: 18px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
    margin-top: 28px;
}

.dtc-manual-content h2:first-child { margin-top: 0; }
.dtc-manual-content h3 { font-size: 15px; color: var(--dtc-text); margin-top: 20px; }
.dtc-manual-content p { line-height: 1.7; color: #374151; }
.dtc-manual-content ul, .dtc-manual-content ol { padding-left: 24px; line-height: 1.8; }

.dtc-manual-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 14px;
}

.dtc-manual-content th {
    background: #1e293b;
    color: white;
    padding: 10px 14px;
    text-align: left;
    font-size: 13px;
}

.dtc-manual-content td {
    padding: 10px 14px;
    border-bottom: 1px solid #e5e7eb;
    color: var(--dtc-text);
}

.dtc-manual-content tr:nth-child(even) td { background: #f8fafc; }

.dtc-manual-content code {
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 13px;
}

.dtc-content-locked {
    filter: blur(5px);
    user-select: none;
    pointer-events: none;
}

/* ====== PAYWALL ====== */
.dtc-paywall { display: none; position: relative; margin-top: -180px; z-index: 10; }
.dtc-paywall.active { display: block; }

.dtc-paywall-overlay {
    height: 120px;
    background: linear-gradient(to bottom, transparent, var(--dtc-white));
    position: relative;
    z-index: 1;
}

.dtc-paywall-card {
    background: var(--dtc-white);
    text-align: center;
    padding: 36px 32px;
    border-radius: var(--dtc-radius);
    box-shadow: var(--dtc-shadow-lg);
    border: 2px solid var(--dtc-primary-light);
    position: relative;
    z-index: 2;
}

.dtc-paywall-icon { font-size: 48px; margin-bottom: 12px; }

.dtc-paywall-card h3 { font-size: 22px; margin: 0 0 8px; color: var(--dtc-text); }
.dtc-paywall-card > p { color: var(--dtc-text-light); margin: 0 0 20px; font-size: 14px; }

.dtc-paywall-features { list-style: none; padding: 0; text-align: left; max-width: 360px; margin: 0 auto 24px; }
.dtc-paywall-features li { padding: 6px 0; font-size: 14px; color: var(--dtc-text); }

.dtc-paywall-actions { max-width: 360px; margin: 0 auto; }
.dtc-paywall-secure { font-size: 12px; color: var(--dtc-text-light); margin-top: 12px; }

.dtc-unlocked-bar {
    position: sticky;
    bottom: 0;
    background: var(--dtc-white);
    padding: 16px 32px;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
    border-radius: 0 0 var(--dtc-radius) var(--dtc-radius);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 640px) {
    .dtc-app { padding: 12px; }
    .dtc-search-header, .dtc-form, .dtc-manual-content, .dtc-paywall-card { padding-left: 20px; padding-right: 20px; }
    .dtc-search-header h2 { font-size: 18px; }
    .dtc-loading-header h2 { font-size: 20px; }
    .dtc-tabs { gap: 0; }
    .dtc-tab { padding: 8px 10px; font-size: 11px; }
    .dtc-paywall-card h3 { font-size: 18px; }
    .dtc-btn-large { padding: 14px 24px; font-size: 15px; }
}

.dtc-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: dtcSpin 0.6s linear infinite;
}

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