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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
    min-height: 100vh;
    background: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
    position: relative;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: clamp(12px, 8vw, 24px) clamp(16px, 5vw, 24px) 16px;
    color: white;
    width: 100%;
    box-sizing: border-box;
    position: relative;
    z-index: 10;
}

.status-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
    font-weight: 600;
}

.status-right {
    display: flex;
    align-items: center;
    gap: 5px;
}

.signal-bar {
    width: 4px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1px;
}

.signal-bar:nth-child(1) { height: 4px; }
.signal-bar:nth-child(2) { height: 6px; }
.signal-bar:nth-child(3) { height: 8px; }
.signal-bar:nth-child(4) { height: 10px; opacity: 0.3; }

.wifi-icon {
    width: 15px;
    height: 15px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 3px;
    position: relative;
    margin: 0 3px;
}

.wifi-icon::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1px;
}

.battery {
    width: 24px;
    height: 12px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    position: relative;
}

.battery::after {
    content: '';
    position: absolute;
    right: -3px;
    top: 3px;
    width: 2px;
    height: 6px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 0 1px 1px 0;
}

.battery-fill {
    position: absolute;
    top: 1px;
    left: 1px;
    bottom: 1px;
    width: 70%;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1px;
}

.back-btn {
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    margin: -10px;
}

.header-title {
    font-size: 20px;
    font-weight: 600;
}

.settings-btn {
    cursor: pointer;
    padding: 8px;
    margin: -8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.settings-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Balance Section */
.balance-section {
    text-align: center;
    padding: clamp(20px, 8vw, 40px) 16px clamp(30px, 10vw, 60px);
    color: white;
    width: 100%;
    box-sizing: border-box;
}

.balance-label {
    font-size: clamp(14px, 4vw, 16px);
    opacity: 0.8;
    margin-bottom: clamp(8px, 2vw, 12px);
}

.balance-amount {
    font-size: clamp(28px, 10vw, 40px);
    font-weight: 700;
    line-height: 1.2;
    margin: 0 auto;
    max-width: 90%;
    word-break: break-word;
}

.balance-note {
    font-size: clamp(12px, 3.5vw, 14px);
    opacity: 0.7;
    margin-top: clamp(20px, 8vw, 40px);
}

/* Content Section */
.content {
    background: white;
    border-radius: 24px 24px 0 0;
    min-height: 60vh;
    position: relative;
    padding: 0 0 max(20px, env(safe-area-inset-bottom, 20px)) 0;
    flex: 1;
    width: 100%;
    box-sizing: border-box;
    margin-top: auto;
}

/* Alert Card */
.alert-card {
    margin: 16px;
    background: white;
    border-radius: 16px;
    padding: clamp(16px, 4vw, 20px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #00d4aa;
    box-sizing: border-box;
    width: calc(100% - 32px);
    max-width: 100%;
}

.alert-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.alert-icon {
    width: 24px;
    height: 24px;
    background: #00d4aa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    flex-shrink: 0;
}

.alert-title {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
    line-height: 1.3;
}

.alert-text {
    color: #5a6c7d;
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 20px;
}

.contact-btn {
    width: 100%;
    background: #00d4aa;
    color: white;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: #00b894;
    transform: translateY(-2px);
}

/* Transaction History */
.transaction-section {
    padding: clamp(12px, 4vw, 20px);
}

.section-title {
    font-size: clamp(16px, 4.5vw, 18px);
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: clamp(12px, 4vw, 20px);
}

.transaction-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: clamp(12px, 3vw, 16px) 0;
    border-bottom: 1px solid #f1f3f4;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
    box-sizing: border-box;
}

.transaction-item:hover {
    background: rgba(0, 212, 170, 0.05);
    margin: 0 calc(-1 * clamp(12px, 4vw, 20px));
    padding: clamp(12px, 3vw, 16px) clamp(12px, 4vw, 20px);
    border-radius: 8px;
}

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

.transaction-left {
    display: flex;
    align-items: center;
    gap: clamp(8px, 3vw, 12px);
    min-width: 0;
    flex: 1;
}

.transaction-icon {
    width: clamp(36px, 10vw, 44px);
    height: clamp(36px, 10vw, 44px);
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(14px, 4vw, 18px);
    flex-shrink: 0;
}

.transaction-icon.withdraw {
    color: #ff4757;
}

.transaction-icon.refund {
    color: #00d4aa;
}

.transaction-details {
    min-width: 0;
    overflow: hidden;
}

.transaction-details h4 {
    font-size: clamp(14px, 4vw, 16px);
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.transaction-date {
    font-size: clamp(12px, 3.2vw, 14px);
    color: #8e8e93;
    white-space: nowrap;
}

.transaction-right {
    display: flex;
    align-items: center;
    gap: clamp(4px, 2vw, 8px);
    margin-left: 8px;
    flex-shrink: 0;
}

.transaction-amount {
    font-size: clamp(14px, 4vw, 16px);
    font-weight: 600;
    white-space: nowrap;
}

.transaction-amount.negative {
    color: #ff4757;
}

.transaction-amount.positive {
    color: #00d4aa;
}

.transaction-status {
    font-size: clamp(10px, 2.8vw, 12px);
    color: #8e8e93;
    white-space: nowrap;
}

.chevron {
    font-size: clamp(14px, 4vw, 16px);
    color: #c7c7cc;
    flex-shrink: 0;
}

.no-transactions {
    text-align: center;
    padding: clamp(24px, 8vw, 40px) 20px;
    color: #8e8e93;
    font-size: clamp(12px, 3.5vw, 14px);
}

/* Bottom indicator */
.bottom-indicator {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    max-width: 134px;
    height: 5px;
    background: #000;
    border-radius: 3px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    pointer-events: none;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: white;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalFadeIn 0.3s ease-out;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin: auto;
    display: flex;
    flex-direction: column;
    transform: translateY(20px);
    transition: transform 0.3s ease-out;
}

.modal.active .modal-content {
    transform: translateY(0);
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 24px;
    color: #666;
    background: rgba(255, 255, 255, 0.9);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    border: none;
    padding: 0;
}

.modal-image {
    width: 100%;
    max-height: 400px;
    overflow: hidden;
}

.modal-image img {
    width: 100%;
    height: auto;
    display: block;
}

.modal-actions {
    padding: 16px 20px;
    border-bottom: 1px solid #f0f0f0;
}

.download-btn {
    width: 100%;
    padding: 14px;
    background: #00d4aa;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.download-btn:hover {
    background: #00b894;
    transform: translateY(-1px);
}

.download-btn:active {
    transform: translateY(0);
}

.description-section {
    padding: 0 20px 20px;
}

.toggle-description {
    width: 100%;
    background: none;
    border: none;
    padding: 12px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 14px;
    color: #555;
    cursor: pointer;
}

.toggle-description i {
    transition: transform 0.3s ease;
}

.description-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0;
    margin: 0;
}

.description-content.show {
    max-height: 500px;
    padding-top: 12px;
}

.description-content p {
    margin: 0 0 12px 0;
    color: #444;
    line-height: 1.5;
}

.description-content ol {
    padding-left: 20px;
    margin: 0;
}

.description-content li {
    margin-bottom: 8px;
    color: #555;
    line-height: 1.4;
}

/* Welcome modal tidy styles */
.welcome-modal {
    max-width: 440px;
}

.welcome-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 16px;
}

.welcome-header i {
    font-size: 48px;
    color: #ff9800;
}

.welcome-body {
    padding: 12px 20px 20px;
    text-align: left;
}

.welcome-text {
    margin: 0;
    color: #444;
    line-height: 1.6;
}

/* Animations */
@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.content {
    animation: slideUp 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.alert-card {
    animation: fadeIn 0.6s ease-out 0.2s both;
}

.transaction-item {
    animation: fadeIn 0.4s ease-out both;
}

.transaction-item:nth-child(2) { animation-delay: 0.1s; }
.transaction-item:nth-child(3) { animation-delay: 0.2s; }
.transaction-item:nth-child(4) { animation-delay: 0.3s; }

/* Toast notification */
.toast {
    position: fixed;
    left: 50%;
    bottom: max(20px, env(safe-area-inset-bottom, 20px));
    transform: translateX(-50%) translateY(20px);
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.25);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}