:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --background-color: #000000;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --success-color: #50E3C2;
    --warning-color: #FFB800;
    --danger-color: #FF6B6B;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 2rem 1rem;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

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

.header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header h1 i {
    margin-right: 0.5rem;
    -webkit-text-fill-color: var(--primary-color);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.1);
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card h2 i {
    color: var(--primary-color);
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

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

/* Presets Grid */
.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.preset-btn {
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
}

.preset-btn i {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.preset-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.2);
}

.preset-btn:hover i {
    color: var(--secondary-color);
}

.preset-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: var(--background-color);
}

.preset-btn.active i {
    color: var(--background-color);
}

/* Configuration */
.config-group {
    margin-bottom: 2rem;
}

.config-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.config-group label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.value-display {
    background: var(--gradient);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--background-color);
}

.slider {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    margin: 1rem 0;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient);
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Checkbox Group */
.checkbox-group {
    margin-top: 2rem;
}

.checkbox-group h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-group h3 i {
    color: var(--primary-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease;
    position: relative;
}

.checkbox-label:hover {
    background: rgba(255, 255, 255, 0.05);
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    height: 20px;
    width: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--card-border);
    border-radius: 4px;
    margin-right: 0.75rem;
    position: relative;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.checkbox-label input:checked ~ .checkmark {
    background: var(--gradient);
    border-color: transparent;
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid var(--background-color);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-label input:checked ~ .checkmark:after {
    display: block;
}

.label-text {
    flex: 1;
    color: var(--text-color);
    font-size: 0.95rem;
}

/* Generate Button */
.generate-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--gradient);
    border: none;
    border-radius: 12px;
    color: var(--background-color);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 2rem;
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.card-header .generate-btn {
    width: auto;
    margin-top: 0;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(74, 144, 226, 0.3);
}

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

.generate-btn i {
    font-size: 1.2rem;
}

/* Passwords List */
.passwords-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.password-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.password-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-color);
}

.password-display {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    word-break: break-all;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    letter-spacing: 1px;
}

.copy-btn {
    background: var(--gradient);
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    color: var(--background-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
    flex-shrink: 0;
}

.copy-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
}

.copy-all-btn {
    background: var(--gradient);
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    color: var(--background-color);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
}

.copy-all-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
}

/* Strength Meter */
.strength-meter {
    width: 100%;
    height: 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin: 1rem 0;
}

.strength-bar {
    height: 100%;
    width: 0%;
    border-radius: 10px;
    transition: all 0.3s ease;
    background: var(--gradient);
}

.strength-text {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
}

.strength-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.strength-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.strength-feature i {
    color: var(--success-color);
}

.strength-feature.weak i {
    color: var(--danger-color);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient);
    color: var(--background-color);
    padding: 1rem 1.5rem;
    border-radius: 12px;
    display: none;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast.show {
    display: flex;
}

.toast i {
    font-size: 1.2rem;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .card {
        padding: 1.5rem;
    }

    .presets-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

    .preset-btn {
        padding: 1rem 0.5rem;
        font-size: 0.9rem;
    }

    .password-item {
        flex-direction: column;
        align-items: stretch;
    }

    .copy-btn {
        width: 100%;
        justify-content: center;
    }

    .toast {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
    }
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.app-footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

.app-footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.app-footer a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.app-footer .footer-link {
    color: var(--secondary-color);
}

.app-footer .footer-link:hover {
    color: var(--primary-color);
}

.app-footer .bmc-logo {
    display: inline-block;
    margin-top: 1rem;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.app-footer .bmc-logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.app-footer .bmc-logo img {
    height: 60px;
    width: 217px;
}

.app-footer .view-all-apps-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1rem auto 0 auto;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    width: fit-content;
}

.app-footer .view-all-apps-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 242, 255, 0.3);
    text-decoration: none;
}