/* === UPS Official Theme === */
:root {
    --ups-brown: #351c15;
    --ups-gold: #ffb500;
    --ups-light-gray: #f7f7f7;
    --ups-dark-gray: #555;
    --white: #fff;
    --border-color: #e0e0e0;
    --success-green: #2e7d32;
    --alert-bg: #fff3e0;
    --font-family: 'UPS Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background: var(--ups-light-gray);
    color: var(--ups-brown);
    line-height: 1.5;
}

a {
    text-decoration: none;
    color: var(--ups-brown);
}

/* Header */
.ups-header {
    background: var(--ups-brown);
    color: var(--white);
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.ups-logo {
    height: 32px;
    margin-right: 20px;
}

.ups-header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.ups-search {
    display: flex;
    align-items: center;
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
    height: 36px;
}

.ups-search input {
    border: none;
    padding: 0 10px;
    font-size: 14px;
    width: 200px;
    outline: none;
    color: var(--ups-brown);
}

.ups-search button {
    background: var(--ups-gold);
    border: none;
    padding: 0 12px;
    cursor: pointer;
    font-weight: bold;
    color: var(--ups-brown);
    font-family: var(--font-family);
}

.ups-nav-links {
    display: flex;
    gap: 20px;
    font-size: 14px;
    font-weight: 600;
}

.ups-nav-links a {
    color: var(--white);
}

/* Main Container */
.container {
    max-width: 960px;
    margin: 30px auto;
    padding: 0 20px;
}

/* Card */
.card, .tracking-card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.08);
    padding: 30px;
    margin-bottom: 20px;
}

/* Tracking Number Display */
.tracking-number-display {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

/* Status Badge */
.status-badge {
    display: inline-block;
    background: #e8f5e9;
    color: var(--success-green);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

/* Progress Steps */
.progress-steps {
    display: flex;
    justify-content: space-between;
    margin: 25px 0;
    position: relative;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--ups-gold);
    z-index: 0;
}

.step {
    position: relative;
    z-index: 1;
    text-align: center;
    flex: 1;
    font-size: 13px;
    font-weight: 600;
}

.step-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--ups-gold);
    color: var(--ups-brown);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 5px;
    font-size: 14px;
}

.step.completed .step-icon {
    background: #4caf50;
    color: white;
}

.step.current .step-icon {
    background: var(--ups-brown);
    color: white;
}

/* Alert Box */
.alert-box {
    background: var(--alert-bg);
    padding: 15px;
    border-radius: 6px;
    margin: 20px 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--ups-brown);
    color: var(--white);
    text-align: center;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 16px;
    font-family: var(--font-family);
    transition: background 0.2s;
}

.btn:hover {
    background: #4d2b22;
}

.btn-primary {
    background: var(--ups-gold);
    color: var(--ups-brown);
    text-transform: uppercase;
}

.btn-primary:hover {
    background: #e6a300;
}

/* Form Elements */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--ups-brown);
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    font-family: var(--font-family);
    color: var(--ups-brown);
}

.form-group input:focus {
    outline: none;
    border-color: var(--ups-gold);
}

.row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.col-md-6 {
    flex: 1;
    min-width: 250px;
}

.error {
    color: #d32f2f;
    font-size: 14px;
    margin-top: 5px;
}

/* Footer */
.footer {
    background: var(--ups-brown);
    color: var(--white);
    text-align: center;
    padding: 20px;
    font-size: 13px;
    margin-top: 40px;
}

@media (max-width: 600px) {
    .ups-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .ups-header-right {
        margin-top: 10px;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }
    .ups-search input {
        width: 140px;
    }
    .progress-steps {
        flex-wrap: wrap;
        gap: 10px;
    }
    .step {
        flex: 0 0 45%;
    }
    .row {
        flex-direction: column;
    }
}