:root {
    color-scheme: light dark;
    --bg: var(--tg-theme-bg-color, #0f1115);
    --surface: var(--tg-theme-secondary-bg-color, #181b22);
    --card: var(--tg-theme-section-bg-color, #1c2028);
    --text: var(--tg-theme-text-color, #f3f4f6);
    --muted: var(--tg-theme-hint-color, #9ca3af);
    --accent: var(--tg-theme-button-color, #7c5cff);
    --accent-text: var(--tg-theme-button-text-color, #ffffff);
    --link: var(--tg-theme-link-color, #8ea7ff);
    --danger: var(--tg-theme-destructive-text-color, #ff6b6b);
    --border: color-mix(in srgb, var(--text) 12%, transparent);
    --shadow: 0 16px 40px rgba(0, 0, 0, .22);
    --radius: 20px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    padding: 0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
button, input, textarea, select { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

.app-shell { min-height: 100vh; min-height: var(--tg-viewport-stable-height, 100vh); }
.screen { width: min(100%, 720px); margin: 0 auto; padding: 18px 16px 28px; }
.center-screen { min-height: 80vh; display: grid; place-items: center; align-content: center; gap: 18px; text-align: center; }

.brand-mark {
    width: 76px; height: 76px; border-radius: 24px;
    display: grid; place-items: center;
    background: linear-gradient(145deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #00d4ff));
    color: var(--accent-text); font-size: 36px; font-weight: 900; letter-spacing: -2px;
    box-shadow: 0 18px 40px color-mix(in srgb, var(--accent) 35%, transparent);
}
.spinner {
    width: 30px; height: 30px; border-radius: 50%;
    border: 3px solid color-mix(in srgb, var(--muted) 25%, transparent);
    border-top-color: var(--accent); animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.muted { color: var(--muted); }
.eyebrow { color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.h1 { margin: 6px 0 6px; font-size: clamp(27px, 8vw, 38px); line-height: 1.05; letter-spacing: -.04em; }
.lead { margin: 0; color: var(--muted); line-height: 1.55; }

.verify-wrap { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; gap: 18px; }
.verify-card, .card {
    border: 1px solid var(--border); background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
}
.verify-card { padding: 18px; }
.info-strip { display: flex; gap: 12px; align-items: flex-start; background: color-mix(in srgb, var(--accent) 10%, var(--surface)); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); padding: 14px; border-radius: 16px; }
.info-strip .icon { font-size: 22px; }
.info-strip p { margin: 0; color: var(--muted); line-height: 1.45; font-size: 14px; }

.field { display: grid; gap: 8px; margin-top: 16px; }
.field label { font-size: 13px; font-weight: 700; }
.input, .textarea, .select {
    width: 100%; border: 1px solid var(--border); background: var(--surface); color: var(--text);
    border-radius: 14px; padding: 14px 15px; outline: none; transition: border-color .18s, box-shadow .18s;
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.textarea { min-height: 120px; resize: vertical; }

.primary-button, .secondary-button, .danger-button {
    width: 100%; min-height: 50px; border: 0; border-radius: 15px; padding: 12px 16px; font-weight: 800; cursor: pointer;
}
.primary-button { background: var(--accent); color: var(--accent-text); box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 28%, transparent); }
.secondary-button { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.danger-button { background: color-mix(in srgb, var(--danger) 14%, var(--surface)); color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 28%, transparent); }
.primary-button:disabled, .secondary-button:disabled { opacity: .55; cursor: wait; }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.verify-status { margin-top: 14px; min-height: 20px; color: var(--muted); font-size: 14px; line-height: 1.45; }
.verify-status.error { color: var(--danger); }
.verify-status.success { color: #38d996; }
.support-link { color: var(--link); text-decoration: none; font-weight: 700; }

.dashboard { padding-top: 14px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.user-block { min-width: 0; }
.user-block .hello { color: var(--muted); font-size: 13px; }
.user-block h1 { margin: 3px 0 0; font-size: 22px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status-pill { display: inline-flex; align-items: center; gap: 7px; border-radius: 999px; padding: 8px 11px; font-size: 12px; font-weight: 800; background: color-mix(in srgb, #38d996 13%, var(--surface)); color: #38d996; border: 1px solid color-mix(in srgb, #38d996 30%, transparent); }
.status-pill.inactive { background: color-mix(in srgb, var(--danger) 13%, var(--surface)); color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 15%, transparent); }

.billing-hero {
    position: relative; overflow: hidden; padding: 20px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 92%, #111), color-mix(in srgb, var(--accent) 55%, #0a1120));
    color: var(--accent-text); border-radius: 24px; min-height: 175px;
    box-shadow: 0 20px 45px color-mix(in srgb, var(--accent) 28%, transparent);
}
.billing-hero::after { content: ""; position: absolute; width: 180px; height: 180px; border-radius: 50%; right: -70px; top: -80px; background: rgba(255,255,255,.12); }
.billing-label { opacity: .78; font-size: 13px; }
.billing-amount { font-size: clamp(29px, 8vw, 42px); font-weight: 900; letter-spacing: -.04em; margin: 8px 0 12px; }
.billing-meta { display: flex; justify-content: space-between; align-items: end; gap: 14px; position: relative; z-index: 1; }
.pppoe-chip { display: inline-flex; padding: 8px 10px; border-radius: 11px; background: rgba(255,255,255,.13); font-size: 12px; font-weight: 700; max-width: 60%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.profile-mini { text-align: right; }
.profile-mini strong { display: block; font-size: 14px; }
.profile-mini span { opacity: .72; font-size: 11px; }

.section-title { margin: 24px 2px 12px; display: flex; justify-content: space-between; align-items: center; }
.section-title h2 { margin: 0; font-size: 17px; }
.section-title span { color: var(--muted); font-size: 12px; }
.menu-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px; }
.menu-button { min-height: 112px; text-align: left; border: 1px solid var(--border); background: var(--card); color: var(--text); border-radius: 18px; padding: 15px; cursor: pointer; box-shadow: 0 8px 22px rgba(0,0,0,.08); }
.menu-button:active { transform: scale(.985); }
.menu-icon { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; font-size: 22px; background: color-mix(in srgb, var(--accent) 12%, var(--surface)); margin-bottom: 14px; }
.menu-button strong { display: block; font-size: 14px; }
.menu-button small { display: block; color: var(--muted); margin-top: 4px; line-height: 1.35; }

.usage-card { padding: 16px; }
.usage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.usage-item { background: var(--surface); border-radius: 14px; padding: 12px 8px; text-align: center; }
.usage-item strong { display: block; font-size: 13px; }
.usage-item span { display: block; color: var(--muted); font-size: 10px; margin-top: 5px; }

.footer-actions { display: grid; gap: 10px; margin-top: 22px; }

.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: flex-end; justify-content: center; }
.modal.hidden { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.58); backdrop-filter: blur(3px); }
.modal-card { position: relative; width: min(100%, 720px); max-height: min(88vh, 900px); overflow: auto; background: var(--bg); border-radius: 24px 24px 0 0; border: 1px solid var(--border); box-shadow: 0 -20px 50px rgba(0,0,0,.3); padding: 10px 16px calc(24px + env(safe-area-inset-bottom)); animation: slideUp .2s ease-out; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } }
.modal-handle { width: 46px; height: 5px; background: var(--border); border-radius: 999px; margin: 0 auto 10px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; position: sticky; top: -10px; z-index: 2; padding: 8px 0 12px; background: var(--bg); }
.modal-header h2 { margin: 3px 0 0; font-size: 22px; }
.icon-button { width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; }
.modal-body { padding-bottom: 6px; }

.invoice-list, .complaint-list { display: grid; gap: 10px; }
.invoice-card, .complaint-card { border: 1px solid var(--border); background: var(--card); border-radius: 16px; padding: 14px; }
.invoice-top, .complaint-top { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.invoice-card strong.amount { font-size: 17px; }
.meta { color: var(--muted); font-size: 12px; margin-top: 6px; line-height: 1.45; }
.badge { display: inline-flex; border-radius: 999px; padding: 6px 9px; font-size: 10px; font-weight: 800; }
.badge.paid { color: #38d996; background: color-mix(in srgb, #38d996 12%, var(--surface)); }
.badge.unpaid { color: #ffb84d; background: color-mix(in srgb, #ffb84d 13%, var(--surface)); }
.badge.open { color: #66a7ff; background: color-mix(in srgb, #66a7ff 13%, var(--surface)); }
.empty-state { text-align: center; padding: 34px 12px; color: var(--muted); }
.empty-state .emoji { font-size: 38px; margin-bottom: 10px; }

.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom)); transform: translate(-50%, 20px); z-index: 100; width: min(calc(100% - 32px), 520px); padding: 12px 14px; border-radius: 14px; background: color-mix(in srgb, var(--text) 92%, transparent); color: var(--bg); font-weight: 700; font-size: 13px; opacity: 0; pointer-events: none; transition: .2s; box-shadow: var(--shadow); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: var(--danger); color: #fff; }

@media (min-width: 560px) {
    .screen { padding-left: 22px; padding-right: 22px; }
    .menu-grid { grid-template-columns: repeat(3, 1fr); }
    .modal-card { border-radius: 24px; margin-bottom: 18px; max-height: 86vh; }
}

/* Number-first verification */
.account-choice-list { display: grid; gap: 10px; }
.account-choice {
    width: 100%; min-height: 64px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
    border-radius: 15px; padding: 12px 14px; display: flex; align-items: center; justify-content: space-between;
    gap: 14px; text-align: left; cursor: pointer;
}
.account-choice span { min-width: 0; }
.account-choice strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.account-choice small { display: block; color: var(--muted); margin-top: 4px; }
.account-choice > b { color: var(--accent); font-size: 28px; line-height: 1; }
.account-choice:active { transform: scale(.99); }
.account-choice:disabled { opacity: .55; cursor: wait; }