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

html,
body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f3f4f6;
    color: #111827;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-header {
    border-bottom: 1px solid rgba(209, 213, 219, 0.8);
    padding: 0.5rem 0;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    height: 40px;
    width: auto;
    display: block;
}

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #020617;
    box-shadow: 0 10px 25px rgba(34, 197, 94, 0.35);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-weight: 600;
    letter-spacing: 0.01em;
}

.brand-subtitle {
    font-size: 0.8rem;
    color: rgba(75, 85, 99, 0.95);
}

.site-main {
    flex: 1;
    display: flex;
}

.tracking-section {
    flex: 1;
    padding: 3.5rem 0 3rem;
    background:
        linear-gradient(
            180deg,
            rgba(251, 146, 60, 0.95) 0%,
            rgba(244, 114, 182, 0.9) 35%,
            rgba(243, 244, 246, 0.98) 100%
        );
}

@media (min-width: 768px) {
    .tracking-section {
        padding: 5rem 0 4rem;
    }
}

.tracking-card {
    background: rgba(255, 255, 255, 0.94);
    border-radius: 1.5rem;
    padding: 2rem 1.6rem 1.9rem;
    box-shadow:
        0 22px 60px rgba(15, 23, 42, 0.35),
        0 0 0 1px rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(22px);
}

@media (min-width: 768px) {
    .tracking-card {
        padding: 2.5rem 2.2rem 2.2rem;
    }
}

h1 {
    font-size: 2.2rem;
    margin: 0 0 0.75rem;
    color: #111827;
}

.lead {
    margin: 0 0 2rem;
    color: rgba(75, 85, 99, 0.98);
}

.tracking-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

@media (min-width: 640px) {
    .tracking-form {
        flex-direction: row;
        align-items: flex-start;
        column-gap: 0.75rem;
        row-gap: 0.5rem;
        flex-wrap: wrap;
    }
}

.field-group {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.tracking-form input[type="text"],
.tracking-form input[type="email"] {
    flex: 1;
    padding: 0.75rem 0.9rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(209, 213, 219, 0.9);
    background: #f9fafb;
    color: #111827;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.tracking-form input[type="text"]::placeholder,
.tracking-form input[type="email"]::placeholder {
    color: rgba(156, 163, 175, 0.95);
}

.tracking-form input[type="text"]:focus,
.tracking-form input[type="email"]:focus {
    border-color: #fb923c;
    box-shadow: 0 0 0 1px rgba(251, 146, 60, 0.5), 0 10px 40px rgba(15, 23, 42, 0.25);
    background: #ffffff;
}

.tracking-form button {
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, #fb923c, #f97316);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 14px 35px rgba(22, 163, 74, 0.35);
    transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
    white-space: nowrap;
}

.tracking-form button:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 45px rgba(249, 115, 22, 0.45);
    filter: brightness(1.03);
}

.tracking-form button:active {
    transform: translateY(0);
    box-shadow: 0 10px 25px rgba(249, 115, 22, 0.35);
}

.hint {
    font-size: 0.85rem;
    color: rgba(107, 114, 128, 0.95);
    margin-bottom: 1.75rem;
}

.success-message {
    font-size: 0.9rem;
    color: #047857;
    margin-top: 0.25rem;
    margin-bottom: 0.75rem;
}

.field-error {
    font-size: 0.8rem;
    color: #b91c1c;
    margin-top: 0.25rem;
}

.input-error {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.3);
}

.hint code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    background: rgba(243, 244, 246, 0.9);
    padding: 0.15rem 0.4rem;
    border-radius: 0.35rem;
    border: 1px solid rgba(209, 213, 219, 0.9);
}

.results {
    background: #ffffff;
    border-radius: 1.25rem;
    border: 1px solid rgba(209, 213, 219, 0.9);
    padding: 1.5rem 1.3rem 1.4rem;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.9);
    margin-bottom: 1.75rem;
}

.results h2 {
    margin: 0 0 0.75rem;
    font-size: 1.15rem;
}

.results-content {
    font-size: 0.95rem;
    color: rgba(55, 65, 81, 0.98);
}

.results-content strong {
    color: #111827;
}

.results-meta {
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: rgba(107, 114, 128, 0.95);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(248, 250, 252, 0.95);
    border: 1px solid rgba(209, 213, 219, 0.9);
    margin-right: 0.5rem;
}

.badge-status {
    background: rgba(52, 211, 153, 0.08);
    border-color: rgba(16, 185, 129, 0.7);
    color: #047857;
}

.help {
    margin-top: 0.75rem;
}

.help h3 {
    margin: 0 0 0.35rem;
    font-size: 0.95rem;
}

.help p {
    margin: 0;
    font-size: 0.85rem;
    color: rgba(107, 114, 128, 0.95);
}

.site-footer {
    padding: 1.25rem 0 1.75rem;
    border-top: 1px solid rgba(229, 231, 235, 0.95);
    background: #f9fafb;
    font-size: 0.8rem;
    color: rgba(107, 114, 128, 0.95);
}

.site-footer p {
    margin: 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}