/* Mobile-first Base Styles */
:root {
    --container-padding: 1rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* Grid System */
.grid {
    display: grid;
    gap: 1rem;
    width: 100%;
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Card Styles */
.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Bank Account Styles */
.bank-accounts-grid {
    display: grid;
    gap: 1rem;
    margin: 1rem 0;
}

.bank-account {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 768px) {
    .bank-account {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.bank-info {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.bank-info i {
    font-size: 2rem;
    color: var(--primary);
}

.add-bank-account {
    background: var(--grey);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.add-bank-account:hover {
    background: var(--primary-light);
    color: var(--white);
}

/* Calculator Styles */
.calculator-section {
    margin: 2rem 0;
}

.calculator-grid {
    display: grid;
    gap: 2rem;
    margin-top: 1rem;
}

@media (min-width: 768px) {
    .calculator-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.calculator-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* Status Badge Styles */
.status-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge i {
    font-size: 1rem;
}

/* Investment Stats Grid */
.investment-stats {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .investment-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .investment-stats {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* FAQ Styles */
.faq-item {
    border: 1px solid var(--grey);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    padding: 1rem;
    background: var(--white);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 1rem;
    max-height: 500px;
}

.faq-item.active .fa-chevron-down {
    transform: rotate(180deg);
}

/* Support Topics Grid */
.topics-grid {
    display: grid;
    gap: 1rem;
    margin: 1rem 0;
}

@media (min-width: 768px) {
    .topics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .topics-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.topic-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.topic-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.topic-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* Popup Styles */
.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.popup-content {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

@media (max-width: 480px) {
    .popup-content {
        width: 95%;
        padding: 1rem;
    }
}

.popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-popup {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-grey);
}

/* Payment Method Selection */
.payment-methods {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .payment-methods {
        grid-template-columns: repeat(2, 1fr);
    }
}

.payment-method {
    border: 2px solid var(--grey);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.payment-method:hover {
    border-color: var(--primary-light);
}

.payment-method.selected {
    border-color: var(--primary);
    background: var(--grey);
}

.payment-method img {
    max-width: 120px;
    height: auto;
    margin-bottom: 1rem;
}