/* ── Reset & Variables ─────────────────────────────────────────────── */
:root {
    --lcv-red:      #d0202e;
    --lcv-red-dark: #a81820;
    --lcv-green:    #16a34a;
    --lcv-yellow:   #d97706;
    --lcv-gray-50:  #f9fafb;
    --lcv-gray-100: #f3f4f6;
    --lcv-gray-200: #e5e7eb;
    --lcv-gray-400: #9ca3af;
    --lcv-gray-600: #4b5563;
    --lcv-gray-700: #374151;
    --lcv-gray-900: #111827;
    --lcv-white:    #ffffff;
    --lcv-shadow:   0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
    --lcv-shadow-lg:0 8px 32px rgba(0,0,0,.10);
    --lcv-radius:   16px;
    --lcv-radius-sm:10px;
}

.lcv-wrap *, .lcv-wrap *::before, .lcv-wrap *::after { box-sizing: border-box; }

/* ── Wrapper ────────────────────────────────────────────────────────── */
.lcv-wrap {
    max-width: 820px;
    margin: 0 auto;
    padding: 40px 20px 80px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--lcv-gray-700);
}

/* ── Hero ───────────────────────────────────────────────────────────── */
.lcv-hero {
    text-align: center;
    margin-bottom: 36px;
    animation: lcvFadeDown .6s ease both;
}
.lcv-hero-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px; height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #fff0f0 0%, #ffe4e4 100%);
    color: var(--lcv-red);
    margin-bottom: 16px;
}
.lcv-hero-icon svg { width: 38px; height: 38px; }
.lcv-hero-title {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 800;
    color: var(--lcv-gray-900);
    margin: 0 0 8px;
    letter-spacing: -.5px;
}
.lcv-hero-sub {
    font-size: 1rem;
    color: var(--lcv-gray-600);
    margin: 0;
}

/* ── Search Card ────────────────────────────────────────────────────── */
.lcv-search-card {
    background: var(--lcv-white);
    border-radius: var(--lcv-radius);
    padding: 32px;
    box-shadow: var(--lcv-shadow-lg);
    margin-bottom: 28px;
    animation: lcvFadeUp .6s .1s ease both;
}

.lcv-input-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.lcv-input-wrap {
    flex: 1;
    min-width: 200px;
    position: relative;
}
.lcv-input-icon {
    position: absolute;
    left: 14px; top: 50%;
    transform: translateY(-50%);
    color: var(--lcv-gray-400);
    pointer-events: none;
    display: flex;
}
.lcv-code-input {
    width: 100%;
    height: 52px;
    padding: 0 16px 0 52px !important;
    border: 2px solid var(--lcv-gray-200);
    border-radius: var(--lcv-radius-sm);
    font-size: .97rem;
    color: var(--lcv-gray-900);
    background: var(--lcv-gray-50);
    outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.lcv-code-input::placeholder { color: var(--lcv-gray-400); }
.lcv-code-input:focus {
    border-color: var(--lcv-red);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(208,32,46,.08);
}

.lcv-verify-btn {
    height: 52px;
    padding: 0 28px;
    background: var(--lcv-red);
    color: #fff;
    border: none;
    border-radius: var(--lcv-radius-sm);
    font-size: .97rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background .2s, transform .15s, box-shadow .2s;
    white-space: nowrap;
}
.lcv-verify-btn:hover { background: var(--lcv-red-dark); box-shadow: 0 4px 14px rgba(208,32,46,.35); }
.lcv-verify-btn:active { transform: scale(.97); }

.lcv-qr-toggle-btn {
    height: 52px;
    padding: 0 18px;
    background: var(--lcv-gray-100);
    color: var(--lcv-gray-700);
    border: 2px solid var(--lcv-gray-200);
    border-radius: var(--lcv-radius-sm);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background .2s, border-color .2s;
    white-space: nowrap;
}
.lcv-qr-toggle-btn:hover { background: var(--lcv-gray-200); border-color: var(--lcv-gray-400); }
.lcv-qr-toggle-btn.active { background: var(--lcv-gray-900); color: #fff; border-color: var(--lcv-gray-900); }

/* ── QR Scanner ─────────────────────────────────────────────────────── */
.lcv-qr-scanner-wrap {
    margin-top: 24px;
    border-top: 1px solid var(--lcv-gray-200);
    padding-top: 20px;
    animation: lcvFadeUp .3s ease both;
}
.lcv-qr-scanner-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    font-size: .9rem;
    color: var(--lcv-gray-600);
}
.lcv-stop-scan {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--lcv-gray-200);
    border-radius: 6px;
    padding: 5px 12px;
    font-size: .85rem;
    cursor: pointer;
    color: var(--lcv-gray-600);
    transition: background .2s;
}
.lcv-stop-scan:hover { background: var(--lcv-gray-100); }
#lcv-reader { width: 100%; max-width: 420px; margin: 0 auto; border-radius: var(--lcv-radius-sm); overflow: hidden; }
#lcv-reader video { border-radius: var(--lcv-radius-sm); }

/* ── States ─────────────────────────────────────────────────────────── */
.lcv-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 0 8px;
    gap: 12px;
    animation: lcvFadeUp .3s ease both;
}
.lcv-state p { margin: 0; font-size: .97rem; color: var(--lcv-gray-600); }
.lcv-state-icon {
    width: 60px; height: 60px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.lcv-icon-error { background: #fff0f0; color: var(--lcv-red); }
.lcv-try-again {
    background: none; border: 2px solid var(--lcv-red);
    color: var(--lcv-red); padding: 8px 24px; border-radius: 8px;
    font-weight: 600; cursor: pointer; font-size: .9rem;
    transition: background .2s, color .2s;
}
.lcv-try-again:hover { background: var(--lcv-red); color: #fff; }

/* Loading ring */
.lcv-loader-ring {
    width: 48px; height: 48px;
    border: 4px solid var(--lcv-gray-200);
    border-top-color: var(--lcv-red);
    border-radius: 50%;
    animation: lcvSpin .8s linear infinite;
}

/* Spin util */
.lcv-spin { animation: lcvSpin .7s linear infinite; display: block; }

/* ── Result ─────────────────────────────────────────────────────────── */
.lcv-result { animation: lcvFadeUp .5s ease both; }

/* Status Banner */
.lcv-status-banner {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-radius: var(--lcv-radius);
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}
.lcv-status-banner.valid   { background: linear-gradient(135deg,#f0fdf4,#dcfce7); border: 1px solid #bbf7d0; }
.lcv-status-banner.expired { background: linear-gradient(135deg,#fffbeb,#fef3c7); border: 1px solid #fde68a; }
.lcv-status-banner.revoked { background: linear-gradient(135deg,#fff0f0,#fee2e2); border: 1px solid #fecaca; }

.lcv-status-icon {
    width: 48px; height: 48px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-size: 22px;
}
.valid   .lcv-status-icon { background: #dcfce7; color: #15803d; }
.expired .lcv-status-icon { background: #fef3c7; color: #b45309; }
.revoked .lcv-status-icon { background: #fee2e2; color: #dc2626; }

.lcv-status-text { flex: 1; }
.lcv-status-text strong { display: block; font-size: 1.05rem; color: var(--lcv-gray-900); }
.lcv-status-text span   { font-size: .87rem; color: var(--lcv-gray-600); }

.lcv-status-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
}
.valid   .lcv-status-badge { background: #bbf7d0; color: #15803d; }
.expired .lcv-status-badge { background: #fde68a; color: #92400e; }
.revoked .lcv-status-badge { background: #fecaca; color: #991b1b; }

/* Cards */
.lcv-card {
    background: var(--lcv-white);
    border-radius: var(--lcv-radius);
    box-shadow: var(--lcv-shadow);
    padding: 28px 32px;
    margin-bottom: 20px;
    border: 1px solid var(--lcv-gray-100);
}
.lcv-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--lcv-gray-900);
    margin: 0 0 22px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--lcv-gray-100);
}

/* Student Card */
.lcv-student-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.lcv-student-info { flex: 1; }
.lcv-student-name {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--lcv-gray-900);
    margin: 0 0 8px;
}
.lcv-student-id {
    font-size: .95rem;
    color: var(--lcv-gray-600);
    margin: 0;
}
.lcv-student-id strong { color: var(--lcv-gray-900); }

.lcv-student-photo {
    width: 96px; height: 96px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--lcv-gray-100);
    background: var(--lcv-gray-100);
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    position: relative;
}
.lcv-student-photo img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute; top:0; left:0;
}
.lcv-photo-placeholder { color: var(--lcv-gray-400); }

/* Details Grid */
.lcv-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 32px;
    margin-bottom: 28px;
}
@media (max-width: 560px) { .lcv-details-grid { grid-template-columns: 1fr; } }

.lcv-detail-item { display: flex; flex-direction: column; gap: 5px; }
.lcv-detail-label {
    font-size: .8rem;
    font-weight: 700;
    color: var(--lcv-gray-600);
    text-transform: uppercase;
    letter-spacing: .6px;
}
.lcv-detail-value { font-size: 1rem; color: var(--lcv-gray-900); font-weight: 500; }
.lcv-cert-no-val { font-family: monospace; font-size: 1.05rem; color: var(--lcv-red); font-weight: 700; }

/* Action Row */
.lcv-action-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    border-top: 1px solid var(--lcv-gray-100);
    padding-top: 22px;
}

/* Buttons */
.lcv-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: var(--lcv-radius-sm);
    font-size: .93rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background .2s, transform .15s, box-shadow .2s;
}
.lcv-btn:hover { transform: translateY(-1px); }
.lcv-btn:active { transform: scale(.97); }

.lcv-btn-primary {
    background: var(--lcv-red);
    color: #fff;
}
.lcv-btn-primary:hover { background: var(--lcv-red-dark); box-shadow: 0 4px 14px rgba(208,32,46,.3); color: #fff; }

.lcv-btn-secondary {
    background: var(--lcv-gray-900);
    color: #fff;
}
.lcv-btn-secondary:hover { background: #000; box-shadow: 0 4px 14px rgba(0,0,0,.25); color: #fff; }

.lcv-btn-outline {
    background: none;
    color: var(--lcv-red);
    border: 2px solid var(--lcv-red);
}
.lcv-btn-outline:hover { background: var(--lcv-red); color: #fff; }

/* PDF */
.lcv-pdf-viewer {
    width: 100%;
    border-radius: var(--lcv-radius-sm);
    overflow: hidden;
    background: var(--lcv-gray-900);
}
.lcv-pdf-viewer iframe {
    width: 100%;
    height: 600px;
    border: none;
    display: block;
}

/* Verify Another */
.lcv-verify-another {
    text-align: center;
    padding: 8px 0 20px;
}

/* ── Animations ─────────────────────────────────────────────────────── */
@keyframes lcvFadeDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes lcvFadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes lcvSpin {
    to { transform: rotate(360deg); }
}
@keyframes lcvPop {
    0%   { transform: scale(0.8); opacity: 0; }
    60%  { transform: scale(1.06); opacity: 1; }
    100% { transform: scale(1); }
}
@keyframes lcvCheckDraw {
    from { stroke-dashoffset: 60; }
    to   { stroke-dashoffset: 0; }
}

.lcv-result .lcv-card {
    animation: lcvFadeUp .45s ease both;
}
.lcv-result .lcv-card:nth-child(2) { animation-delay: .05s; }
.lcv-result .lcv-card:nth-child(3) { animation-delay: .12s; }
.lcv-result .lcv-card:nth-child(4) { animation-delay: .20s; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .lcv-search-card { padding: 20px; }
    .lcv-input-row   { flex-direction: column; }
    .lcv-verify-btn, .lcv-qr-toggle-btn { width: 100%; justify-content: center; }
    .lcv-student-card { flex-direction: column-reverse; align-items: flex-start; }
    .lcv-card { padding: 20px; }
    .lcv-action-row { flex-direction: column; }
    .lcv-btn { justify-content: center; }
}