:root {
    --verde-escuro: #0f2e1e;
    --verde-escuro-2: #123b26;
    --verde-accent: #3fb53f;
    --creme: #f8f3e6;
    --preto: #16201a;
    --cinza-texto: #6b6f6a;
    --erro: #c0392b;
    --radius-lg: 28px;
    --radius-md: 14px;
    --radius-pill: 999px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    color: var(--creme);
    display: flex;
    flex-direction: column;
    background:
        linear-gradient(180deg, rgba(8, 20, 12, 0.35) 0%, rgba(8, 18, 12, 0.55) 45%, rgba(6, 15, 10, 0.88) 100%),
        url('../img/bg-rastreamento.jpeg') center/cover no-repeat;
    background-attachment: fixed;
}

h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.topbar {
    padding: 28px 32px;
}

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

.hero {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 20px 80px;
}

.card {
    width: 100%;
    max-width: 620px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: var(--radius-lg);
    padding: 48px 44px;
}

.card h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.08;
    margin: 0 0 16px;
    color: var(--creme);
}

.card h1 .line {
    display: block;
}

.card h1 .accent {
    color: var(--verde-accent);
}

.subtitle {
    font-size: 16px;
    color: rgba(248, 243, 230, 0.8);
    margin: 0 0 32px;
    line-height: 1.5;
    max-width: 440px;
}

form label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
    color: rgba(248, 243, 230, 0.85);
}

.input-row {
    display: flex;
    align-items: stretch;
    gap: 10px;
}

.input-row input {
    flex: 1;
    min-width: 0;
    border: none;
    border-radius: var(--radius-pill);
    padding: 17px 24px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    background: var(--creme);
    color: var(--preto);
}

.input-row input::placeholder {
    color: var(--cinza-texto);
}

.input-row input:focus {
    outline: 2px solid var(--verde-accent);
    outline-offset: 2px;
}

.input-row button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-shrink: 0;
    border: none;
    border-radius: var(--radius-pill);
    padding: 16px 26px;
    background: var(--creme);
    color: var(--preto);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.input-row button:hover {
    background: #ffffff;
    transform: translateY(-1px);
}

.input-row button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--preto);
    color: var(--creme);
    font-size: 13px;
}

.resultado {
    margin-top: 28px;
}

.resultado:empty {
    margin-top: 0;
}

.resultado-loading,
.resultado-erro,
.resultado-vazio {
    border-radius: var(--radius-md);
    padding: 16px 18px;
    font-size: 14px;
}

.resultado-loading {
    background: rgba(255, 255, 255, 0.1);
    color: var(--creme);
}

.resultado-erro {
    background: rgba(192, 57, 43, 0.18);
    border: 1px solid rgba(192, 57, 43, 0.4);
    color: #ffd7d0;
}

.resultado-conteudo {
    background: var(--creme);
    color: var(--preto);
    border-radius: var(--radius-md);
    padding: 20px;
    font-size: 14px;
    line-height: 1.6;
    overflow-x: auto;
}

.footer {
    text-align: center;
    padding: 24px 20px;
    font-size: 13px;
    color: rgba(248, 243, 230, 0.6);
}

.footer a {
    color: var(--verde-accent);
    font-weight: 600;
    text-decoration: none;
}

@media (max-width: 640px) {
    .card {
        padding: 32px 24px;
    }
    .card h1 {
        font-size: 32px;
    }
    .input-row {
        flex-direction: column;
    }
    .input-row button {
        justify-content: center;
    }
}