:root {
    --bg-dark: #0F0F0F;
    --text-white: #FFFFFF;
    --accent-yellow: #FFD700;
    --input-bg: #1E1E1E;
    --optional-text: #AAAAAA;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition: all 0.3s ease;
    --grid-line: rgba(255, 255, 255, 0.02);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 30px 30px;
}

.container {
    width: 100%;
    max-width: 450px;
    margin: 0 auto;
}

.card {
    background: rgba(30, 30, 30, 0.9);
    border-radius: var(--border-radius-md);
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    font-size: 36px;
    color: var(--accent-yellow);
    margin-bottom: 15px;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.header p {
    color: var(--optional-text);
    font-size: 14px;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.input-wrapper {
    position: relative;
}

.label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
}

.required::after {
    content: "*";
    color: var(--accent-yellow);
    margin-left: 4px;
}

.optional {
    color: var(--optional-text);
    font-weight: 400;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--text-white);
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-yellow);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.validation-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-yellow);
    opacity: 0;
    transition: var(--transition);
}

.valid .validation-icon {
    opacity: 1;
}

.password-toggle {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    font-size: 18px;
    transition: var(--transition);
}

.password-toggle:hover, .password-toggle.active {
    color: var(--accent-yellow);
}

.strength-meter {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.strength-progress {
    height: 100%;
    width: 0%;
    background: var(--accent-yellow);
    border-radius: 2px;
    transition: var(--transition);
}

.hint {
    color: var(--optional-text);
    font-size: 12px;
    margin-top: 6px;
}

.currency-selector {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.currency-option {
    flex: 1;
    padding: 10px;
    border-radius: var(--border-radius-lg);
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.currency-option.active {
    background: var(--accent-yellow);
    color: var(--bg-dark);
    border-color: var(--accent-yellow);
}

.currency-option:hover:not(.active) {
    border-color: var(--accent-yellow);
}

.income-wrapper {
    position: relative;
}

.currency-prefix {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-yellow);
    font-weight: 600;
}

.income-input {
    padding-left: 40px;
}

.notification-toggle {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
}

.toggle-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 2px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transition: var(--transition);
}

input:checked + .toggle-slider {
    background-color: var(--accent-yellow);
}

input:checked + .toggle-slider:before {
    transform: translateX(25px);
    background-color: var(--bg-dark);
}

.btn {
    display: block;
    width: 100%;
    padding: 16px;
    border-radius: var(--border-radius-lg);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    margin-bottom: 15px;
    transform: scale(1);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent-yellow);
    color: var(--bg-dark);
    border: none;
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover {
    background: #ffcc00;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
}

.btn-ghost {
    background: transparent;
    border: 2px solid var(--accent-yellow);
    color: var(--text-white);
}

.btn-ghost:hover {
    background: rgba(255, 215, 0, 0.1);
}

.security-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--optional-text);
    font-size: 13px;
    margin-top: 20px;
}

.terms {
    text-align: center;
    color: var(--optional-text);
    font-size: 12px;
    margin-top: 15px;
}

.terms a {
    color: var(--accent-yellow);
    text-decoration: none;
}

/* Animation for invalid input */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 215, 0, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 215, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 215, 0, 0); }
}

.pulse {
    animation: pulse 0.5s;
}

@media (max-width: 768px) {
    .card {
        padding: 30px 20px;
        width: 95%;
        margin: 0 auto;
    }
    
    .container {
        max-width: 100%;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 60%;
    }
}