:root {
    --bg-color: #0b0d12;
    --card-bg: #14171f;
    --card-border: #232732;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --danger-glow: rgba(239, 68, 68, 0.2);
    --input-bg: #0f1118;
    --input-border: #2d3240;
    --input-focus: rgba(99, 102, 241, 0.3);
    --focus-border: #6366f1;
    --success: #10b981;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    line-height: 1.5;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(239, 68, 68, 0.04), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(99, 102, 241, 0.04), transparent 25%);
}

.container {
    width: 100%;
    max-width: 480px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* Subtle glowing top border for premium feel */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, 0.5), transparent);
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

.icon-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    margin-bottom: 1rem;
    box-shadow: 0 0 20px var(--danger-glow);
}

.warning-icon {
    width: 28px;
    height: 28px;
    color: var(--danger);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

input[type="email"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: all 0.2s ease;
    outline: none;
}

input[type="email"]:focus,
select:focus {
    border-color: var(--focus-border);
    box-shadow: 0 0 0 3px var(--input-focus);
}

input::placeholder {
    color: #475569;
}

/* Custom Select styling */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
}

select option {
    background-color: var(--card-bg);
    color: var(--text-primary);
}

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

.checkbox-container {
    display: flex;
    align-items: flex-start;
    position: relative;
    cursor: pointer;
    user-select: none;
    margin-bottom: 0;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: relative;
    top: 2px;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--danger);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--danger);
    border-color: var(--danger);
    box-shadow: 0 0 10px var(--danger-glow);
}

.checkbox-container input:focus-visible ~ .checkmark {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

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

.checkbox-text {
    margin-left: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.actions {
    display: flex;
    gap: 1rem;
}

button {
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    outline: none;
    position: relative;
}

.btn-cancel {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--input-border);
    flex: 1;
}

.btn-cancel:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: #3f4555;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
    border: 1px solid transparent;
    flex: 2;
    box-shadow: 0 4px 14px 0 var(--danger-glow);
}

.btn-danger:hover {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(239, 68, 68, 0.3);
}

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

.btn-danger:focus-visible {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.4);
}

.btn-danger:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading Spinner */
.spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-loading span {
    display: none;
}

.btn-loading .spinner {
    display: block;
}

/* Success Message */
.hidden {
    display: none !important;
}

.success-message {
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.success-icon {
    width: 56px;
    height: 56px;
    color: var(--success);
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(16, 185, 129, 0.3));
}

.success-message h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Form transition out */
.form-hiding {
    animation: fadeOut 0.3s ease-in forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; transform: scale(0.95); }
}