:root {
    --ibs-bg-card: #fff;
    --ibs-border-card: #eef2f6;
    --ibs-shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.02), 0 20px 40px -8px rgba(0, 0, 0, 0.05);
    --ibs-header-bg: linear-gradient(90deg, #6366f1, #a855f7);
    --ibs-text-title: #0f172a;
    --ibs-text-secondary: #64748b;
    --ibs-text-primary: #1e293b;
    --ibs-bg-input-section: #f8fafc;
    --ibs-border-input-section: #f1f5f9;
    --ibs-bg-input: #fff;
    --ibs-text-input: #1e293b;
    --ibs-border-input: transparent;
    --ibs-focus-border: #6366f1;
    --ibs-focus-ring: rgba(99, 102, 241, 0.15);
    --ibs-icon-color: #6366f1;
    --ibs-bg-button: #0f172a;
    --ibs-text-button: #fff;
    --ibs-bg-button-hover: #1e293b;
    --ibs-bg-result: #fff;
    --ibs-border-result: #eef2f6;
    --ibs-text-result-value: #0f172a;
    --ibs-text-result-label: #94a3b8;
    --ibs-bg-bank-info: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    --ibs-border-bank-info: #e2e8f0;
    --ibs-bg-error: #fef2f2;
    --ibs-border-error: #fee2e2;
    --ibs-text-error: #dc2626;
    --ibs-bg-copy-btn: #f1f5f9;
    --ibs-text-copy-btn: #64748b;
}

.theme-dark {
    --ibs-bg-card: #0f172a;
    --ibs-border-card: rgba(255, 255, 255, 0.05);
    --ibs-text-title: #f8fafc;
    --ibs-text-secondary: #94a3b8;
    --ibs-text-primary: #f8fafc;
    --ibs-bg-input-section: rgba(30, 41, 59, 0.5);
    --ibs-border-input-section: rgba(255, 255, 255, 0.05);
    --ibs-bg-input: #1e293b;
    --ibs-text-input: #f8fafc;
    --ibs-border-input: #334155;
    --ibs-focus-border: #6366f1;
    --ibs-focus-ring: rgba(99, 102, 241, 0.15);
    --ibs-icon-color: #60a5fa;
    --ibs-bg-button: #6366f1;
    --ibs-text-button: #fff;
    --ibs-bg-button-hover: #4f46e5;
    --ibs-bg-result: #1e293b;
    --ibs-border-result: rgba(255, 255, 255, 0.05);
    --ibs-text-result-value: #f8fafc;
    --ibs-text-result-label: #94a3b8;
    --ibs-bg-bank-info: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --ibs-border-bank-info: rgba(255, 255, 255, 0.05);
    --ibs-bg-error: rgba(220, 38, 38, 0.1);
    --ibs-border-error: rgba(220, 38, 38, 0.2);
    --ibs-text-error: #fca5a5;
    --ibs-bg-copy-btn: #0f172a;
    --ibs-text-copy-btn: #94a3b8;
}

[data-theme='dark'] {
    --ibs-bg-card: #0f172a;
    --ibs-border-card: rgba(255, 255, 255, 0.05);
    --ibs-text-title: #f8fafc;
    --ibs-text-secondary: #94a3b8;
    --ibs-text-primary: #f8fafc;
    --ibs-bg-input-section: rgba(30, 41, 59, 0.5);
    --ibs-border-input-section: rgba(255, 255, 255, 0.05);
    --ibs-bg-input: #1e293b;
    --ibs-text-input: #f8fafc;
    --ibs-border-input: #334155;
    --ibs-focus-border: #6366f1;
    --ibs-focus-ring: rgba(99, 102, 241, 0.15);
    --ibs-icon-color: #60a5fa;
    --ibs-bg-button: #6366f1;
    --ibs-text-button: #fff;
    --ibs-bg-button-hover: #4f46e5;
    --ibs-bg-result: #1e293b;
    --ibs-border-result: rgba(255, 255, 255, 0.05);
    --ibs-text-result-value: #f8fafc;
    --ibs-text-result-label: #94a3b8;
    --ibs-bg-bank-info: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --ibs-border-bank-info: rgba(255, 255, 255, 0.05);
    --ibs-bg-error: rgba(220, 38, 38, 0.1);
    --ibs-border-error: rgba(220, 38, 38, 0.2);
    --ibs-text-error: #fca5a5;
    --ibs-bg-copy-btn: #0f172a;
    --ibs-text-copy-btn: #94a3b8;
}

.ibs-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    perspective: 1000px;
    padding: 2rem 1rem;
}

.ibs-card {
    background: var(--ibs-bg-card);
    border: 1px solid var(--ibs-border-card);
    border-radius: 32px;
    padding: 3rem;
    box-shadow: var(--ibs-shadow-card);
    position: relative;
    overflow: hidden;
    color-scheme: light;
}

.theme-dark .ibs-card,
[data-theme='dark'] .ibs-card {
    color-scheme: dark;
}

.ibs-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--ibs-header-bg);
}

.ibs-header {
    text-align: left;
    margin-bottom: 3rem;
}

.ibs-header h3 {
    font-size: 2.25rem;
    font-weight: 950;
    color: var(--ibs-text-title);
    letter-spacing: -0.04em;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.ibs-header p {
    color: var(--ibs-text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    line-height: 1.6;
}

.ibs-input-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    background: var(--ibs-bg-input-section);
    padding: 2rem;
    border-radius: 24px;
    border: 1px solid var(--ibs-border-input-section);
}

.ibs-input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.ibs-input-group label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--ibs-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ibs-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--ibs-bg-input);
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    border: 2px solid var(--ibs-border-input);
    transition: all 0.3s ease;
}

.ibs-input-wrapper:focus-within {
    border-color: var(--ibs-focus-border);
    box-shadow: 0 0 0 4px var(--ibs-focus-ring);
}

.ibs-input-wrapper input {
    width: 100%;
    padding: 1.5rem;
    border: none;
    background: transparent;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--ibs-text-input);
    outline: none;
    letter-spacing: 0.02em;
}

.ibs-input-wrapper input::placeholder {
    color: var(--ibs-text-secondary);
    opacity: 0.5;
}

.ibs-input-icon {
    margin-right: 1.5rem;
    font-size: 1.75rem;
    opacity: 0.6;
    flex-shrink: 0;
}

.ibs-btn-convert {
    width: 100%;
    padding: 1.25rem;
    background: var(--ibs-bg-button);
    color: var(--ibs-text-button);
    border: none;
    border-radius: 20px;
    font-size: 1.1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.ibs-btn-convert:hover {
    background: var(--ibs-bg-button-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.ibs-results-section {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    animation: ibs-slide-up 0.5s ease-out;
}

.ibs-results-section.ibs-hidden {
    display: none;
}

.ibs-error-message.ibs-hidden {
    display: none;
}

.ibs-btn-copy-success span[data-icon] {
    background-color: #10b981;
}

@keyframes ibs-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ibs-result-card {
    background: var(--ibs-bg-result);
    border: 1px solid var(--ibs-border-result);
    padding: 1.5rem 2rem;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.ibs-result-card:hover {
    border-color: var(--ibs-border-card);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.05);
}

.ibs-result-label {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--ibs-text-result-label);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.ibs-result-value {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--ibs-text-result-value);
    letter-spacing: -0.02em;
    overflow-wrap: break-word;
}

.ibs-btn-copy-result {
    position: absolute;
    top: 1rem;
    right: 1rem;
    cursor: pointer;
    background: var(--ibs-bg-copy-btn);
    border: none;
    padding: 8px;
    border-radius: 10px;
    color: var(--ibs-text-copy-btn);
    transition: all 0.2s;
    display: flex;
    font-size: 1.2rem;
}

.ibs-btn-copy-result:hover {
    background: var(--ibs-focus-border);
    color: #fff;
    transform: scale(1.1);
}

.ibs-btn-copy-success {
    background: #10b981;
}

.ibs-bank-info {
    grid-column: span 2;
    background: var(--ibs-bg-bank-info);
    padding: 2rem;
    border-radius: 24px;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    border: 1px solid var(--ibs-border-bank-info);
}

.ibs-bank-logo-placeholder {
    width: 64px;
    height: 64px;
    background: var(--ibs-bg-input);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ibs-border-result);
    font-size: 2rem;
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.04);
    flex-shrink: 0;
}

.ibs-bank-details {
    flex: 1;
}

.ibs-bank-name-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--ibs-text-secondary);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

.ibs-bank-name-value {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--ibs-text-result-value);
    letter-spacing: -0.03em;
}

.ibs-error-message {
    grid-column: span 2;
    background: var(--ibs-bg-error);
    border: 1px solid var(--ibs-border-error);
    padding: 1.25rem;
    border-radius: 20px;
    color: var(--ibs-text-error);
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .ibs-card {
        padding: 2rem;
    }

    .ibs-header h3 {
        font-size: 1.75rem;
    }

    .ibs-input-wrapper input {
        font-size: 1.2rem;
    }
}

@media (max-width: 640px) {
    .ibs-results-section {
        grid-template-columns: 1fr;
    }

    .ibs-bank-info {
        grid-column: span 1;
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .ibs-error-message {
        grid-column: span 1;
    }
}