/* OnlySwap CSS - Blau, Weiß, Dunkelgrau Theme */
:root {
    --primary-blue: #2563eb;
    --light-blue: #3b82f6;
    --dark-blue: #1d4ed8;
    --dark-gray: #374151;
    --darker-gray: #1f2937;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --border-color: #d1d5db;
    --error-color: #ef4444;
    --success-color: #10b981;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    min-height: 100vh;
    color: var(--dark-gray);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo h1 {
    color: var(--primary-blue);
    font-size: 1.8rem;
    font-weight: 700;
}

.connect-btn {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.connect-btn:hover {
    background: var(--dark-blue);
}

.wallet-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--light-gray);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.wallet-info span {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.disconnect-btn {
    background: var(--error-color);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.disconnect-btn:hover {
    opacity: 0.8;
}

/* Main Content */
main {
    padding: 2rem 0;
}

.swap-container {
    max-width: 480px;
    margin: 0 auto;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.swap-header {
    background: var(--primary-blue);
    color: var(--white);
    padding: 1.5rem;
    text-align: center;
}

.swap-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.swap-form {
    padding: 2rem;
}

.token-input {
    position: relative;
    margin-bottom: 1rem;
}

.token-input label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.input-group {
    display: flex;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.input-group:focus-within {
    border-color: var(--primary-blue);
}

.input-group input {
    flex: 1;
    border: none;
    padding: 1rem;
    font-size: 1.1rem;
    outline: none;
    background: var(--white);
}

/* MAX button */
.max-btn {
    background: var(--light-gray);
    color: var(--dark-gray);
    border: none;
    padding: 0 0.75rem;
    margin: 0.25rem 0;
    border-left: 1px solid var(--border-color);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
}

.max-btn:hover {
    background: var(--border-color);
}

.token-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--light-gray);
    cursor: pointer;
    user-select: none;
    min-width: 120px;
    justify-content: center;
    transition: background 0.3s ease;
}

.token-selector:hover {
    background: var(--border-color);
}

.dropdown-arrow {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.balance {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
    text-align: right;
}

/* Token Dropdown */
.token-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
    max-height: 300px;
    overflow-y: auto;
}

.token-dropdown.show {
    display: block;
}

.token-option {
    padding: 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--light-gray);
    transition: background 0.3s ease;
}

.token-option:hover {
    background: var(--light-gray);
}

.token-option:last-child {
    border-bottom: none;
}

.custom-token-input {
    padding: 1rem;
    border-top: 2px solid var(--light-gray);
    background: var(--light-gray);
}

.custom-token-input input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.custom-token-input button {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.custom-token-input button:hover {
    background: var(--dark-blue);
}

/* Swap Direction Button */
.swap-button-container {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.swap-direction-btn {
    background: var(--white);
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.swap-direction-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: rotate(180deg);
}

/* Trade Info */
.trade-info {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.info-row:last-child {
    margin-bottom: 0;
}

/* Main Swap Button */
.swap-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.swap-btn:disabled {
    background: var(--border-color);
    color: var(--dark-gray);
    cursor: not-allowed;
}

.swap-btn:not(:disabled) {
    background: var(--primary-blue);
    color: var(--white);
}

.swap-btn:not(:disabled):hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.modal-content h3 {
    color: var(--dark-gray);
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--dark-gray);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.modal-content button {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
}

.modal-content button:hover {
    background: var(--dark-blue);
}

/* Loader */
.loader {
    border: 3px solid var(--light-gray);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fee notice */
.fee-notice {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--dark-gray);
    text-align: center;
    opacity: 0.9;
}

/* Footer */
footer {
    margin-top: 2rem;
    padding: 1rem 0;
    background: var(--white);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}

.footer-content a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.footer-content a:hover {
    text-decoration: underline;
}

.footer-social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-social-link svg {
    width: 18px;
    height: 18px;
    display: inline-block;
    vertical-align: middle;
    fill: currentColor;
}

.footer-content .copyright {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .swap-container {
        margin: 1rem;
    }
    
    .swap-form {
        padding: 1.5rem;
    }
    
    .wallet-info span {
        font-size: 0.8rem;
        max-width: 150px;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .input-group {
        flex-direction: column;
    }
    
    .token-selector {
        border-top: 1px solid var(--border-color);
        justify-content: space-between;
        min-width: auto;
    }
    
    .custom-token-input input {
        font-size: 0.8rem;
    }
}