:root {
    --black: #0a0a0a;
    --white: #f5f5f0;
    --red: #e81c1c;
    --red-dark: #b01010;
    --red-glow: rgba(232, 28, 28, 0.12);
    --grey: #1a1a1a;
    --grey-mid: #2e2e2e;
    --grey-light: #888;
    --grey-border: #222;
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'Space Mono', monospace;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-h: 70px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    overflow-x: hidden;
    cursor: none;
}

/* ── VOUCHER CARD ── */
.voucher-card {
    background: var(--black);
    border: 1px solid var(--grey-border);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}
.voucher-card:hover { border-color: var(--grey-mid); }
.voucher-card.unused { border-color: rgba(232,28,28,0.3); }
.voucher-card.unused:hover { border-color: var(--red); }
.voucher-card.expired { opacity: 0.5; }

/* Đường gạch nối giữa 2 phần */
.voucher-card::before {
    content: '';
    position: absolute;
    left: 110px;
    top: 0; bottom: 0;
    width: 1px;
    border-left: 2px dashed var(--grey-border);
}
.voucher-card.unused::before { border-left-color: rgba(232,28,28,0.25); }

/* Bán nguyệt trái phải */
.voucher-card::after {
    content: '';
    position: absolute;
    left: 98px; top: 50%;
    transform: translateY(-50%);
    width: 24px; height: 24px;
    border-radius: 50%;
    background: var(--grey);
    border: 1px solid var(--grey-border);
    z-index: 1;
}

.voucher-left {
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 110px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 4px;
}
.voucher-discount {
    font-family: var(--font-display);
    font-size: 32px;
    line-height: 1;
    color: var(--red);
}
.voucher-discount-type {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--grey-light);
}
.voucher-right {
    margin-left: 126px;
    padding: 18px 18px 18px 0;
    display: flex; flex-direction: column;
    justify-content: center; gap: 6px;
}
.voucher-code {
    font-family: var(--font-mono);
    font-size: 15px;
    letter-spacing: 3px;
    color: var(--red);
    font-weight: 700;
}
.voucher-desc {
    font-size: 12px;
    color: var(--grey-light);
    line-height: 1.6;
}
.voucher-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--grey-border);
}
.voucher-expire {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--grey-light);
}
.voucher-status-badge {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 3px 10px;
}
.voucher-used-info {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--grey-light);
    margin-top: 4px;
}

/* Used overlay */
.voucher-card.used::after {
    content: 'ĐÃ DÙNG';
    position: absolute;
    top: 50%; right: 16px;
    transform: translateY(-50%) rotate(-15deg);
    font-family: var(--font-display);
    font-size: 20px;
    letter-spacing: 3px;
    color: rgba(255,255,255,.06);
    pointer-events: none;
    z-index: 2;
    border: 2px solid rgba(255,255,255,.06);
    padding: 4px 10px;
    white-space: nowrap;
}

/* Empty state */
.voucher-empty {
    grid-column: 1/-1;
    text-align: center;
    padding: 60px 20px;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--grey-light);
}
.voucher-empty-icon { font-size: 48px; margin-bottom: 16px; opacity: .3; }

.order-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.order-summary {
    flex: 1;
}

.btn-cancel-order {
    padding: 10px 16px;
    background: none;
    border: 1px solid var(--red);
    color: var(--red);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-cancel-order:hover {
    background: var(--red);
    color: white;
}

.modal-overlay {
    display: none;
}
.modal-overlay.open {
    display: flex;
}

.status-cancelled {
    background: rgba(232, 28, 28, 0.1);
    color: var(--red);
    border: 1px solid rgba(232, 28, 28, 0.3);
}


/* CURSOR */
#cursor {
    width: 12px;
    height: 12px;
    background: var(--red);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width .2s, height .2s;
}

#cursor-ring {
    width: 36px;
    height: 36px;
    border: 1px solid rgba(232, 28, 28, 0.5);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: width .2s, height .2s;
}

body.hovering #cursor {
    width: 8px;
    height: 8px;
    background: var(--white);
}

body.hovering #cursor-ring {
    width: 52px;
    height: 52px;
    border-color: var(--red);
}

::-webkit-scrollbar {
    width: 3px;
}

::-webkit-scrollbar-track {
    background: var(--black);
}

::-webkit-scrollbar-thumb {
    background: var(--red);
}

/* NAV */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 40px;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--grey-border);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 28px;
    letter-spacing: 3px;
    color: var(--white);
    text-decoration: none;
    cursor: none;
}

.nav-logo span {
    color: var(--red);
}

.nav-back {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--grey-light);
    text-decoration: none;
    cursor: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color var(--transition);
}

.nav-back:hover {
    color: var(--red);
}

/* LAYOUT */
.profile-wrap {
    padding: calc(var(--nav-h) + 48px) 40px 80px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 32px;
    align-items: start;
}

/* ── SIDEBAR ── */
.sidebar {
    position: sticky;
    top: calc(var(--nav-h) + 24px);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.profile-card {
    background: var(--grey);
    padding: 36px 28px;
    border: 1px solid var(--grey-border);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--red), transparent);
}

.avatar-wrap {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: var(--grey-mid);
    border: 2px solid var(--grey-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 40px;
    color: var(--red);
    margin: 0 auto;
    transition: border-color var(--transition);
}

.avatar-wrap:hover .avatar {
    border-color: var(--red);
}

.avatar-edit {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--red);
    border: 2px solid var(--black);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    cursor: none;
}

.profile-name {
    font-family: var(--font-display);
    font-size: 24px;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.profile-email {
    font-size: 12px;
    color: var(--grey-light);
    margin-bottom: 20px;
}

.profile-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 6px 14px;
    background: var(--red-glow);
    border: 1px solid var(--red);
    color: var(--red);
}

.profile-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--grey-border);
    margin-top: 24px;
    border-top: 1px solid var(--grey-border);
}

.stat-box {
    background: var(--grey);
    padding: 16px 12px;
    text-align: center;
}

.stat-box-num {
    font-family: var(--font-display);
    font-size: 26px;
    color: var(--white);
    line-height: 1;
}

.stat-box-label {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--grey-light);
    text-transform: uppercase;
    margin-top: 4px;
}

/* Sidebar nav */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-nav-item {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 14px 20px;
    background: var(--grey);
    border: 1px solid transparent;
    color: var(--grey-light);
    cursor: none;
    transition: var(--transition);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-nav-item:hover {
    color: var(--white);
    border-color: var(--grey-border);
}

.sidebar-nav-item.active {
    color: var(--white);
    border-color: var(--red);
    background: var(--red-glow);
}

.sidebar-nav-item.active .nav-dot {
    background: var(--red);
}

.nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--grey-mid);
    transition: background var(--transition);
}

/* ── MAIN CONTENT ── */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Section */
.section-block {
    background: var(--grey);
    border: 1px solid var(--grey-border);
    display: none;
}

.section-block.active {
    display: block;
}

.section-block-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--grey-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-block-title {
    font-family: var(--font-display);
    font-size: 28px;
    letter-spacing: 1px;
}

.section-block-tag {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--red);
    margin-bottom: 6px;
}

.btn-edit {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 10px 20px;
    background: none;
    border: 1px solid var(--grey-border);
    color: var(--grey-light);
    cursor: none;
    transition: var(--transition);
}

.btn-edit:hover {
    border-color: var(--red);
    color: var(--white);
}

.btn-save {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 10px 24px;
    background: var(--red);
    border: none;
    color: var(--white);
    cursor: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-save::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--white);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-save:hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

.btn-save:hover {
    color: var(--black);
}

.btn-save span {
    position: relative;
    z-index: 1;
}

/* Form fields */
.fields-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 32px;
}

.field-full {
    grid-column: 1 / -1;
}

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

.field-label {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--grey-light);
}

.field-value {
    font-size: 14px;
    color: var(--white);
    padding: 12px 0;
    border-bottom: 1px solid var(--grey-border);
}

.field-input {
    padding: 12px 16px;
    background: var(--grey-mid);
    border: 1px solid var(--grey-border);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition);
    width: 100%;
}

.field-input:focus {
    border-color: var(--red);
}

.field-input::placeholder {
    color: var(--grey-light);
}

.field-input[readonly] {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ADDRESS CARDS */
.addresses-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 32px;
}

.address-card {
    padding: 24px;
    border: 1px solid var(--grey-border);
    position: relative;
    transition: var(--transition);
    background: var(--black);
}

.address-card:hover {
    border-color: var(--grey-mid);
}

.address-card.default {
    border-color: var(--red);
}

.address-card.default::before {
    content: 'MẶC ĐỊNH';
    position: absolute;
    top: -1px;
    right: 20px;
    font-family: var(--font-mono);
    font-size: 8px;
    letter-spacing: 2px;
    background: var(--red);
    color: var(--white);
    padding: 3px 10px;
}

.address-name {
    font-family: var(--font-display);
    font-size: 18px;
    margin-bottom: 6px;
}

.address-phone {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--grey-light);
    margin-bottom: 10px;
}

.address-text {
    font-size: 13px;
    color: var(--grey-light);
    line-height: 1.6;
}

.address-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.address-btn {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: none;
    border: none;
    color: var(--grey-light);
    cursor: none;
    padding: 0;
    transition: color var(--transition);
}

.address-btn:hover {
    color: var(--red);
}

.address-add {
    border: 1px dashed var(--grey-border);
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: none;
    transition: var(--transition);
    background: var(--black);
}

.address-add:hover {
    border-color: var(--red);
}

.address-add-icon {
    font-size: 28px;
    opacity: 0.3;
}

.address-add-text {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--grey-light);
}

/* ORDERS */
.orders-list {
    padding: 0 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 24px;
}

.order-card {
    border: 1px solid var(--grey-border);
    background: var(--black);
    transition: border-color var(--transition);
}

.order-card:hover {
    border-color: var(--grey-mid);
}

.order-header {
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--grey-border);
    cursor: none;
}

.order-id {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--white);
}

.order-date {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--grey-light);
}

.order-status {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 4px 12px;
}

.status-delivered {
    background: rgba(0, 200, 100, 0.1);
    color: #00c864;
    border: 1px solid rgba(0, 200, 100, 0.3);
}

.status-shipping {
    background: rgba(255, 165, 0, 0.1);
    color: #ffa500;
    border: 1px solid rgba(255, 165, 0, 0.3);
}

.status-processing {
    background: var(--red-glow);
    color: var(--red);
    border: 1px solid rgba(232, 28, 28, 0.3);
}

.order-items {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.order-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.order-item-emoji {
    font-size: 28px;
    width: 48px;
    height: 48px;
    background: var(--grey-mid);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.order-item-info {
    flex: 1;
}

.order-item-name {
    font-family: var(--font-display);
    font-size: 16px;
}

.order-item-sub {
    font-size: 12px;
    color: var(--grey-light);
    margin-top: 2px;
}

.order-item-price {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
}

.order-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--grey-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.order-total-label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--grey-light);
    text-transform: uppercase;
}

.order-total-val {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 700;
    color: var(--red);
}

/* SECURITY */
.security-list {
    padding: 8px 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 8px;
}

.security-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--grey-border);
}

.security-item:last-child {
    border-bottom: none;
}

.security-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.security-icon {
    width: 40px;
    height: 40px;
    border: 1px solid var(--grey-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.security-title {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--white);
    margin-bottom: 4px;
}

.security-desc {
    font-size: 12px;
    color: var(--grey-light);
}

.security-status {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.status-on {
    color: #00c864;
}

.status-off {
    color: var(--grey-light);
}

.toggle-btn {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 8px 16px;
    background: none;
    border: 1px solid var(--grey-border);
    color: var(--grey-light);
    cursor: none;
    transition: var(--transition);
    margin-left: 16px;
}

.toggle-btn:hover {
    border-color: var(--red);
    color: var(--white);
}

/* NOTIFICATION PREFS */
.notif-list {
    padding: 8px 32px 32px;
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.notif-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
    border-bottom: 1px solid var(--grey-border);
}

.notif-item:last-child {
    border-bottom: none;
}

.notif-title {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--white);
    margin-bottom: 3px;
}

.notif-desc {
    font-size: 12px;
    color: var(--grey-light);
}

.switch {
    width: 44px;
    height: 24px;
    background: var(--grey-mid);
    border-radius: 12px;
    position: relative;
    cursor: none;
    transition: background var(--transition);
    flex-shrink: 0;
}

.switch.on {
    background: var(--red);
}

.switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--white);
    transition: transform var(--transition);
}

.switch.on::after {
    transform: translateX(20px);
}

/* SOS DEVICES */
.devices-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 32px;
}

.device-card {
    padding: 24px;
    border: 1px solid var(--grey-border);
    background: var(--black);
    position: relative;
    transition: var(--transition);
}

.device-card:hover {
    border-color: var(--grey-mid);
}

.device-card.online {
    border-color: rgba(0, 200, 100, 0.4);
}

.device-card.online::before {
    content: '';
    position: absolute;
    top: 16px;
    right: 16px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #00c864;
    box-shadow: 0 0 8px #00c864;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 200, 100, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(0, 200, 100, 0);
    }
}

.device-emoji {
    font-size: 36px;
    margin-bottom: 14px;
}

.device-name {
    font-family: var(--font-display);
    font-size: 20px;
    margin-bottom: 4px;
}

.device-model {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--grey-light);
    margin-bottom: 16px;
}

.device-stat {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--grey-light);
}

.device-stat-icon {
    font-size: 14px;
}

.device-stat strong {
    color: var(--white);
}

.battery-bar {
    flex: 1;
    height: 4px;
    background: var(--grey-mid);
    border-radius: 2px;
    overflow: hidden;
}

.battery-fill {
    height: 100%;
    background: #00c864;
    border-radius: 2px;
    transition: width 1s ease;
}

.battery-fill.low {
    background: var(--red);
}

/* TOAST */
.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 9999;
    background: var(--grey);
    border-left: 3px solid var(--red);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 260px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    font-size: 18px;
}

.toast-text {
    font-size: 13px;
}

/* MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    backdrop-filter: blur(4px);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--grey);
    border: 1px solid var(--grey-border);
    padding: 40px;
    width: 480px;
    max-width: 90vw;
    transform: translateY(20px);
    transition: transform var(--transition);
    position: relative;
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 32px;
    margin-bottom: 8px;
}

.modal-sub {
    font-size: 13px;
    color: var(--grey-light);
    margin-bottom: 28px;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: none;
    border: 1px solid var(--grey-border);
    color: var(--grey-light);
    font-size: 16px;
    cursor: none;
    transition: var(--transition);
}

.modal-close:hover {
    border-color: var(--red);
    color: var(--red);
}

/* ANIMATIONS */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.fade-in {
    animation: fadeUp 0.5s ease forwards;
}

/* ══════════════════════════
   SAFE SENIOR - DEMO NOTICE
══════════════════════════ */

.demo-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;

    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(5px);

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.demo-overlay.open {
    opacity: 1;
    visibility: visible;
}

.demo-box {
    position: relative;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
    padding: 38px 34px 30px;

    background: #1A1A1A;
    border: 1px solid #333;
    border-top: 3px solid #FF1E2D;

    color: #F5F5F5;
    font-family: inherit;

    transform: translateY(18px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.demo-overlay.open .demo-box {
    transform: translateY(0);
}

.demo-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 42px;
    height: 42px;
    margin-bottom: 22px;

    border: 1px solid #FF1E2D;
    border-radius: 50%;

    color: #FF1E2D;
    font-family: Georgia, serif;
    font-size: 26px;
    font-style: italic;
}

.demo-tag {
    margin-bottom: 10px;
    color: #FF1E2D;

    font-family: var(--font-mono, monospace);
    font-size: 10px;
    letter-spacing: 4px;
}

.demo-title {
    margin: 0 0 22px;
    color: #F5F5F5;

    font-family: var(--font-display, inherit);
    font-size: 25px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 1px;
}

.demo-text {
    margin: 0 0 14px;
    color: #AAA;

    font-size: 13px;
    line-height: 1.9;
}

.demo-thanks {
    margin: 20px 0 28px;
    padding-left: 14px;

    border-left: 2px solid #FF1E2D;
    color: #F5F5F5;

    font-size: 12px;
    line-height: 1.8;
}

.demo-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.demo-actions button {
    flex: 1;
    min-height: 46px;
    padding: 12px 15px;

    border-radius: 0;
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;

    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.demo-actions .btn-outline {
    background: transparent;
    border: 1px solid #555;
    color: #DDD;
}

.demo-actions .btn-outline:hover {
    border-color: #FF1E2D;
    color: #FF1E2D;
}

.demo-actions .btn-primary {
    background: #FF1E2D;
    border: 1px solid #FF1E2D;
    color: #FFF;
}

.demo-actions .btn-primary:hover {
    background: #D91524;
    border-color: #D91524;
}

@media (max-width: 480px) {
    .demo-box {
        padding: 28px 22px 24px;
    }

    .demo-title {
        font-size: 21px;
    }

    .demo-actions {
        flex-direction: column;
    }

    .demo-actions button {
        width: 100%;
        flex: auto;
    }
}/* ══════════════════════════
   SAFE SENIOR - DEMO NOTICE
══════════════════════════ */

.demo-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;

    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(5px);

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.demo-overlay.open {
    opacity: 1;
    visibility: visible;
}

.demo-box {
    position: relative;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
    padding: 38px 34px 30px;

    background: #1A1A1A;
    border: 1px solid #333;
    border-top: 3px solid #FF1E2D;

    color: #F5F5F5;
    font-family: inherit;

    transform: translateY(18px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.demo-overlay.open .demo-box {
    transform: translateY(0);
}

.demo-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 42px;
    height: 42px;
    margin-bottom: 22px;

    border: 1px solid #FF1E2D;
    border-radius: 50%;

    color: #FF1E2D;
    font-family: Georgia, serif;
    font-size: 26px;
    font-style: italic;
}

.demo-tag {
    margin-bottom: 10px;
    color: #FF1E2D;

    font-family: var(--font-mono, monospace);
    font-size: 10px;
    letter-spacing: 4px;
}

.demo-title {
    margin: 0 0 22px;
    color: #F5F5F5;

    font-family: var(--font-display, inherit);
    font-size: 25px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 1px;
}

.demo-text {
    margin: 0 0 14px;
    color: #AAA;

    font-size: 13px;
    line-height: 1.9;
}

.demo-thanks {
    margin: 20px 0 28px;
    padding-left: 14px;

    border-left: 2px solid #FF1E2D;
    color: #F5F5F5;

    font-size: 12px;
    line-height: 1.8;
}

.demo-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.demo-actions button {
    flex: 1;
    min-height: 46px;
    padding: 12px 15px;

    border-radius: 0;
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;

    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.demo-actions .btn-outline {
    background: transparent;
    border: 1px solid #555;
    color: #DDD;
}

.demo-actions .btn-outline:hover {
    border-color: #FF1E2D;
    color: #FF1E2D;
}

.demo-actions .btn-primary {
    background: #FF1E2D;
    border: 1px solid #FF1E2D;
    color: #FFF;
}

.demo-actions .btn-primary:hover {
    background: #D91524;
    border-color: #D91524;
}

@media (max-width: 480px) {
    .demo-box {
        padding: 28px 22px 24px;
    }

    .demo-title {
        font-size: 21px;
    }

    .demo-actions {
        flex-direction: column;
    }

    .demo-actions button {
        width: 100%;
        flex: auto;
    }
}/* ══════════════════════════
   SAFE SENIOR - DEMO NOTICE
══════════════════════════ */

.demo-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;

    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(5px);

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.demo-overlay.open {
    opacity: 1;
    visibility: visible;
}

.demo-box {
    position: relative;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
    padding: 38px 34px 30px;

    background: #1A1A1A;
    border: 1px solid #333;
    border-top: 3px solid #FF1E2D;

    color: #F5F5F5;
    font-family: inherit;

    transform: translateY(18px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.demo-overlay.open .demo-box {
    transform: translateY(0);
}

.demo-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 42px;
    height: 42px;
    margin-bottom: 22px;

    border: 1px solid #FF1E2D;
    border-radius: 50%;

    color: #FF1E2D;
    font-family: Georgia, serif;
    font-size: 26px;
    font-style: italic;
}

.demo-tag {
    margin-bottom: 10px;
    color: #FF1E2D;

    font-family: var(--font-mono, monospace);
    font-size: 10px;
    letter-spacing: 4px;
}

.demo-title {
    margin: 0 0 22px;
    color: #F5F5F5;

    font-family: var(--font-display, inherit);
    font-size: 25px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 1px;
}

.demo-text {
    margin: 0 0 14px;
    color: #AAA;

    font-size: 13px;
    line-height: 1.9;
}

.demo-thanks {
    margin: 20px 0 28px;
    padding-left: 14px;

    border-left: 2px solid #FF1E2D;
    color: #F5F5F5;

    font-size: 12px;
    line-height: 1.8;
}

.demo-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.demo-actions button {
    flex: 1;
    min-height: 46px;
    padding: 12px 15px;

    border-radius: 0;
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;

    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.demo-actions .btn-outline {
    background: transparent;
    border: 1px solid #555;
    color: #DDD;
}

.demo-actions .btn-outline:hover {
    border-color: #FF1E2D;
    color: #FF1E2D;
}

.demo-actions .btn-primary {
    background: #FF1E2D;
    border: 1px solid #FF1E2D;
    color: #FFF;
}

.demo-actions .btn-primary:hover {
    background: #D91524;
    border-color: #D91524;
}

@media (max-width: 480px) {
    .demo-box {
        padding: 28px 22px 24px;
    }

    .demo-title {
        font-size: 21px;
    }

    .demo-actions {
        flex-direction: column;
    }

    .demo-actions button {
        width: 100%;
        flex: auto;
    }
}/* ══════════════════════════
   SAFE SENIOR - DEMO NOTICE
══════════════════════════ */

.demo-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;

    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(5px);

    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.demo-overlay.open {
    opacity: 1;
    visibility: visible;
}

.demo-box {
    position: relative;
    width: 100%;
    max-width: 500px;
    box-sizing: border-box;
    padding: 38px 34px 30px;

    background: #1A1A1A;
    border: 1px solid #333;
    border-top: 3px solid #FF1E2D;

    color: #F5F5F5;
    font-family: inherit;

    transform: translateY(18px);
    transition: transform 0.25s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.demo-overlay.open .demo-box {
    transform: translateY(0);
}

.demo-icon {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 42px;
    height: 42px;
    margin-bottom: 22px;

    border: 1px solid #FF1E2D;
    border-radius: 50%;

    color: #FF1E2D;
    font-family: Georgia, serif;
    font-size: 26px;
    font-style: italic;
}

.demo-tag {
    margin-bottom: 10px;
    color: #FF1E2D;

    font-family: var(--font-mono, monospace);
    font-size: 10px;
    letter-spacing: 4px;
}

.demo-title {
    margin: 0 0 22px;
    color: #F5F5F5;

    font-family: var(--font-display, inherit);
    font-size: 25px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 1px;
}

.demo-text {
    margin: 0 0 14px;
    color: #AAA;

    font-size: 13px;
    line-height: 1.9;
}

.demo-thanks {
    margin: 20px 0 28px;
    padding-left: 14px;

    border-left: 2px solid #FF1E2D;
    color: #F5F5F5;

    font-size: 12px;
    line-height: 1.8;
}

.demo-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.demo-actions button {
    flex: 1;
    min-height: 46px;
    padding: 12px 15px;

    border-radius: 0;
    font-family: var(--font-mono, monospace);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;

    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.demo-actions .btn-outline {
    background: transparent;
    border: 1px solid #555;
    color: #DDD;
}

.demo-actions .btn-outline:hover {
    border-color: #FF1E2D;
    color: #FF1E2D;
}

.demo-actions .btn-primary {
    background: #FF1E2D;
    border: 1px solid #FF1E2D;
    color: #FFF;
}

.demo-actions .btn-primary:hover {
    background: #D91524;
    border-color: #D91524;
}

@media (max-width: 480px) {
    .demo-box {
        padding: 28px 22px 24px;
    }

    .demo-title {
        font-size: 21px;
    }

    .demo-actions {
        flex-direction: column;
    }

    .demo-actions button {
        width: 100%;
        flex: auto;
    }
}
/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* ── Thiết bị cảm ứng: ẩn cursor tuỳ chỉnh ── */
@media (hover: none), (pointer: coarse) {
    * { cursor: auto !important; }
    #cursor, #cursor-ring { display: none !important; }
}

/* ── Tablet ≤ 900px ── */
@media (max-width: 900px) {
    nav { padding: 0 20px; }

    .profile-wrap {
        grid-template-columns: 1fr;
        padding: calc(var(--nav-h) + 24px) 20px 60px;
        gap: 20px;
    }
    .sidebar { position: static; }

    /* Menu tab → thanh cuộn ngang */
    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        gap: 6px;
        padding-bottom: 4px;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }
    .sidebar-nav::-webkit-scrollbar { display: none; }
    .sidebar-nav-item {
        flex: 0 0 auto;
        white-space: nowrap;
        padding: 12px 16px;
    }

    .fields-grid,
    .addresses-grid,
    .devices-grid { grid-template-columns: 1fr; }
}

/* ── Mobile ≤ 600px ── */
@media (max-width: 600px) {
    nav { padding: 0 16px; height: 60px; }
    :root { --nav-h: 60px; }
    .nav-logo { font-size: 24px; }

    .profile-wrap { padding: calc(var(--nav-h) + 16px) 16px 48px; }

    /* Profile card gọn hơn */
    .profile-card { padding: 28px 20px; }
    .avatar { width: 80px; height: 80px; font-size: 34px; }
    .profile-name { font-size: 22px; }
    .profile-stats { grid-template-columns: repeat(4, 1fr); }
    .stat-box { padding: 12px 4px; }
    .stat-box-num { font-size: 22px; }
    .stat-box-label { font-size: 8px; letter-spacing: 0.5px; }

    /* Header mỗi tab: xếp dọc */
    .section-block-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 20px;
    }
    .section-block-header > div[style*="display:flex"] {
        width: 100%;
        flex-wrap: wrap;
    }
    .section-block-title { font-size: 24px; }
    #voucher-filter { width: 100%; min-width: 0 !important; }

    /* Padding các vùng nội dung */
    .fields-grid,
    .addresses-grid,
    .devices-grid { padding: 20px; gap: 14px; }
    .orders-list { padding: 0 16px 20px; margin-top: 16px; }
    .security-list,
    .notif-list { padding: 4px 20px 20px; }

    /* Voucher: ghi đè style inline của JS */
    #vouchers-grid {
        grid-template-columns: 1fr !important;
        padding: 16px !important;
        gap: 12px !important;
    }

    /* Địa chỉ, đơn hàng */
    .address-actions { flex-wrap: wrap; row-gap: 8px; }
    .order-header { padding: 14px 16px; gap: 10px; }
    .order-items { padding: 14px 16px; }
    .order-footer { padding: 12px 16px; }

    /* Bảo mật: nút xuống dòng dưới nội dung */
    .security-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }
    .security-item > div:last-child { width: 100%; }
    .toggle-btn { margin-left: 0; }

    /* Modal */
    .modal {
        padding: 28px 20px;
        width: 100%;
        max-width: calc(100vw - 24px);
        max-height: 90vh;
        overflow-y: auto;
    }
    .modal-title { font-size: 26px; }

    /* Toast */
    .toast { left: 16px; right: 16px; bottom: 16px; min-width: 0; }
}