/* ===== Variables ===== */
:root {
    --positronic-blue: #0080FF;
    --positronic-cyan: #00E5FF;
    --positronic-electric: #00BFFF;
    --positronic-glow: #1a3a5c;
    --positronic-electric: #00c853;
    --positronic-dark: #0D1B2A;
    --positronic-darker: #060D1A;
    --text-primary: #ffffff;
    --text-secondary: #8e8ea0;
    --card-bg: rgba(255, 255, 255, 0.04);
    --card-border: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.12);
    --danger: #ff4444;
    --success: #00c853;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--positronic-darker);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* ===== Top Bar ===== */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: rgba(15, 15, 26, 0.95);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-logo {
    height: 36px;
    width: 36px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--positronic-dark, #0D1B2A);
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--positronic-blue), var(--positronic-cyan));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    color: white;
    text-shadow: 1px 1px 0 rgba(0,0,0,0.3);
}

.brand-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 11px;
    color: var(--positronic-cyan);
    text-shadow: 1px 1px 0 rgba(139, 0, 0, 0.5);
}

.topbar-network {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.network-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #666;
    transition: all 0.3s;
}

.network-dot.connected { background: var(--success); box-shadow: 0 0 8px rgba(0, 200, 83, 0.5); }
.network-dot.disconnected { background: var(--danger); }

/* ===== App Container ===== */
.app {
    max-width: 480px;
    margin: 0 auto;
    padding: 20px 16px;
}

/* ===== Welcome Screen ===== */
.welcome-card {
    text-align: center;
    padding: 60px 24px;
}

.welcome-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 32px;
    color: white;
    text-shadow: 2px 2px 0 rgba(0,0,0,0.3);
}

.welcome-logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--positronic-dark, #0D1B2A);
    filter: drop-shadow(0 6px 25px rgba(0, 229, 255, 0.4)) drop-shadow(0 0 40px rgba(0, 128, 255, 0.2));
}

.welcome-card h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 18px;
    color: var(--positronic-cyan);
    margin-bottom: 12px;
    text-shadow: 1px 1px 0 rgba(139, 0, 0, 0.3);
}

.welcome-card > p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 32px;
}

.welcome-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.welcome-features {
    display: flex;
    justify-content: center;
    gap: 32px;
}

.wf-item {
    text-align: center;
}

.wf-icon {
    font-size: 24px;
    margin-bottom: 6px;
}

.wf-item span {
    font-size: 11px;
    color: var(--text-secondary);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--positronic-blue), #0066CC);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 128, 255, 0.3);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 128, 255, 0.4); }

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    border: 1px solid var(--card-border);
}

.btn-secondary:hover { background: rgba(255, 255, 255, 0.12); }

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
    padding: 8px 16px;
    font-size: 12px;
}

.btn-outline:hover { border-color: var(--positronic-cyan); color: var(--positronic-cyan); }

.btn-danger {
    background: rgba(255, 68, 68, 0.15);
    color: var(--danger);
    border: 1px solid rgba(255, 68, 68, 0.2);
    padding: 8px 16px;
    font-size: 12px;
}

.btn-danger:hover { background: rgba(255, 68, 68, 0.25); }

.btn-lg { padding: 16px 32px; font-size: 15px; }
.btn-sm { padding: 8px 16px; font-size: 12px; }
.btn-block { width: 100%; }

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

/* ===== Account Header ===== */
.account-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.account-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.account-address {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: monospace;
    font-size: 13px;
    color: var(--positronic-cyan);
}

.copy-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    padding: 2px 4px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.copy-btn:hover { opacity: 1; }

.account-actions {
    display: flex;
    gap: 8px;
}

/* ===== Balance Card ===== */
.balance-card {
    background: linear-gradient(135deg, rgba(0, 128, 255, 0.1), rgba(0, 229, 255, 0.1));
    border: 1px solid rgba(0, 229, 255, 0.15);
    border-radius: 16px;
    padding: 28px 24px;
    text-align: center;
    margin-bottom: 20px;
}

.balance-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.balance-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 10px;
    margin-bottom: 4px;
}

.balance-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 28px;
    color: var(--positronic-cyan);
    text-shadow: 2px 2px 0 rgba(139, 0, 0, 0.2);
}

.balance-symbol {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-secondary);
}

.balance-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.balance-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.status-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.status-player { background: rgba(74, 158, 255, 0.15); color: #4a9eff; }
.status-miner { background: rgba(0, 229, 255, 0.15); color: var(--positronic-cyan); }
.status-node { background: rgba(0, 200, 83, 0.15); color: var(--success); }
.status-nvn { background: rgba(107, 63, 160, 0.15); color: #a78bfa; }

.status-progress {
    font-size: 11px;
    color: var(--text-secondary);
}

/* ===== Quick Actions ===== */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.qa-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.qa-btn:hover {
    border-color: var(--positronic-cyan);
    background: rgba(0, 229, 255, 0.05);
}

.qa-btn.active {
    border-color: var(--positronic-cyan);
    background: rgba(0, 229, 255, 0.1);
}

.qa-icon {
    width: 36px;
    height: 36px;
    margin: 0 auto 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.qa-send { background: linear-gradient(135deg, var(--positronic-blue), #ff4444); }
.qa-receive { background: linear-gradient(135deg, var(--success), #00a844); }
.qa-stake { background: linear-gradient(135deg, var(--positronic-cyan), #e6a800); }
.qa-history { background: linear-gradient(135deg, var(--positronic-glow), #8b5cf6); }

.qa-btn span {
    font-size: 11px;
    color: var(--text-secondary);
}

/* ===== Tab Content ===== */
.tab-content {
    margin-bottom: 20px;
}

.tab-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.input {
    width: 100%;
    padding: 12px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.input:focus {
    border-color: var(--positronic-cyan);
}

.input::placeholder {
    color: #555;
}

.input-with-btn {
    display: flex;
    gap: 8px;
}

.input-with-btn .input { flex: 1; }

.max-btn {
    padding: 0 14px;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 10px;
    color: var(--positronic-cyan);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.max-btn:hover { background: rgba(0, 229, 255, 0.2); }

/* ===== Transaction Summary ===== */
.tx-summary {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 16px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 4px 0;
}

.summary-total {
    border-top: 1px solid var(--card-border);
    margin-top: 6px;
    padding-top: 8px;
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== Receive ===== */
.receive-card {
    text-align: center;
}

.qr-placeholder {
    width: 180px;
    height: 180px;
    margin: 0 auto 20px;
    background: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.qr-inner {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--positronic-blue), var(--positronic-cyan));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-m {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 48px;
    color: white;
    text-shadow: 2px 2px 0 rgba(0,0,0,0.2);
}

.address-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.address-display code {
    font-size: 12px;
    color: var(--positronic-cyan);
    word-break: break-all;
    background: rgba(0, 229, 255, 0.08);
    padding: 8px 12px;
    border-radius: 8px;
}

.receive-hint {
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* ===== Staking ===== */
.stake-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.stake-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
}

.stake-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.stake-value {
    font-weight: 700;
    color: var(--positronic-cyan);
    font-size: 14px;
}

.stake-btns {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.stake-btns .btn { flex: 1; }

.stake-note {
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-secondary);
    padding: 12px;
    background: rgba(107, 63, 160, 0.1);
    border: 1px solid rgba(107, 63, 160, 0.2);
    border-radius: 10px;
    line-height: 1.6;
}

.stake-note strong {
    color: #a78bfa;
}

.stake-actions-panel {
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
}

/* ===== History ===== */
.tx-list { display: flex; flex-direction: column; gap: 8px; }

.tx-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 10px;
    transition: background 0.2s;
}

.tx-item:hover { background: rgba(255, 255, 255, 0.04); }

.tx-icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.tx-icon-circle.tx-out { background: rgba(0, 128, 255, 0.15); }
.tx-icon-circle.tx-in { background: rgba(0, 200, 83, 0.15); }
.tx-icon-circle.tx-stake-icon { background: rgba(0, 229, 255, 0.15); }

.tx-details { flex: 1; min-width: 0; }

.tx-type-label {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 2px;
}

.tx-addr {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tx-amount-col {
    text-align: right;
    flex-shrink: 0;
}

.tx-amount-value {
    font-size: 14px;
    font-weight: 700;
}

.tx-amount-value.tx-positive { color: var(--success); }
.tx-amount-value.tx-negative { color: var(--danger); }

.tx-time {
    font-size: 10px;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
}

.empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; margin-bottom: 6px; }
.empty-hint { font-size: 12px; color: var(--text-secondary); }

/* ===== Status Bar ===== */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.sb-item { text-align: center; }

.sb-label {
    display: block;
    font-size: 9px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

.sb-value {
    font-size: 12px;
    font-weight: 700;
    color: var(--positronic-cyan);
}

.sb-ai { color: var(--success); }

/* ===== Modals ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
}

.modal {
    background: var(--positronic-dark);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    width: 100%;
    max-width: 440px;
    overflow: hidden;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--card-border);
}

.modal-header h2 {
    font-size: 16px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0 4px;
}

.modal-close:hover { color: white; }

.modal-body {
    padding: 24px;
}

.modal-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

/* ===== Key Display ===== */
.key-result {
    margin-bottom: 16px;
}

.key-group {
    margin-bottom: 14px;
}

.key-group label {
    display: block;
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.key-value {
    font-family: monospace;
    font-size: 12px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    word-break: break-all;
    line-height: 1.5;
    color: var(--text-primary);
    user-select: all;
}

.key-address { color: var(--positronic-cyan); }
.key-private { color: var(--danger); border-color: rgba(255, 68, 68, 0.2); }

.danger-text { color: var(--danger); }

.warning-box {
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 10px;
    padding: 14px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.warning-box strong { color: var(--positronic-cyan); }

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--positronic-dark);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 12px 24px;
    font-size: 13px;
    z-index: 300;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* ===== TX Confirm ===== */
.tx-confirm-icon {
    text-align: center;
    font-size: 48px;
    margin-bottom: 16px;
}

.tx-confirm-msg {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .app { padding: 12px 10px; }
    .account-header { flex-direction: column; gap: 12px; align-items: flex-start; }
    .account-actions { align-self: flex-end; }
    .balance-value { font-size: 22px; }
    .quick-actions { grid-template-columns: repeat(4, 1fr); gap: 6px; }
    .qa-btn { padding: 12px 4px; }
    .topbar { padding: 10px 12px; }
    .brand-text { font-size: 9px; }
}

/* Scroll reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }