:root {
    color-scheme: dark;
    --bg: #0b0f0d;
    --card: #121916;
    --card-border: #1d2923;
    --text: #ecf7f0;
    --muted: #87968e;
    --green: #4bd88c;
    --green-dark: #183d2b;
    --red: #ff6b6b;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
}

body {
    min-height: 100vh;
}

#app {
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    padding: 20px 16px 32px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--green);
}

.username {
    color: var(--muted);
    font-size: 14px;
    max-width: 55%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.status-card,
.balance-card,
.device-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.status-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px;
    margin-bottom: 12px;
}

.status-icon {
    font-size: 20px;
    color: var(--green);
}

.status-title {
    font-size: 16px;
    font-weight: 700;
}

.status-subtitle {
    margin-top: 4px;
    color: var(--muted);
    font-size: 13px;
}

.balance-card {
    padding: 20px;
    margin-bottom: 28px;
}

.card-label {
    color: var(--muted);
    font-size: 13px;
}

.balance {
    margin-top: 6px;
    font-size: 32px;
    font-weight: 800;
}

.section-title {
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: 700;
}

.devices {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.device-card {
    padding: 15px;
}

.device-name {
    font-weight: 700;
}

.device-info {
    margin-top: 5px;
    color: var(--muted);
    font-size: 13px;
}

.empty {
    padding: 18px;
    text-align: center;
    color: var(--muted);
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 24px;
}

.button {
    width: 100%;
    border: 0;
    border-radius: 14px;
    padding: 15px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.button.primary {
    background: var(--green);
    color: #07120c;
}

.button.secondary {
    background: var(--green-dark);
    color: var(--green);
}

.button:disabled {
    opacity: 0.5;
    cursor: default;
}

.error {
    margin-top: 16px;
    padding: 12px;
    border-radius: 12px;
    background: #351818;
    color: var(--red);
    font-size: 13px;
}

.hidden {
    display: none;
}

.tariffs-section {
    margin-top: 28px;
}

.tariffs {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tariff-card {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
}

.tariff-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.tariff-name {
    font-size: 16px;
    font-weight: 700;
}

.tariff-price {
    color: var(--green);
    font-size: 18px;
    font-weight: 800;
    white-space: nowrap;
}

.tariff-info {
    margin-top: 7px;
    color: var(--muted);
    font-size: 13px;
}

.tariff-buy {
    margin-top: 14px;
    width: 100%;
    border: 0;
    border-radius: 12px;
    padding: 12px;
    background: var(--green-dark);
    color: var(--green);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.tariff-buy:disabled {
    opacity: 0.5;
    cursor: default;
}

.tariff-buy.primary {
    background: var(--green);
    color: #07120c;
}

.trial-card {
    margin-bottom: 18px;
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
}

.trial-title {
    font-size: 16px;
    font-weight: 700;
}

.trial-info {
    margin-top: 7px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
}

.trial-card .tariff-buy {
    margin-top: 14px;
}



.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 10px;
}

.payment-method-button {
    width: 100%;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 12px;
    background: var(--green-dark);
    color: var(--green);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.payment-method-button:disabled {
    opacity: 0.5;
    cursor: default;
}