:root {
    --primary: #0F172A; /* Slate 900 for a very clean, professional, non-intimidating look */
    --primary-hover: #334155;
    --bg-color: #F8FAFC; /* Slate 50 */
    --card-bg: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --border-focus: #CBD5E1;
    --success: #059669;
    --success-light: #D1FAE5;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 24px 16px;
    line-height: 1.5;
}

.container {
    background: var(--card-bg);
    max-width: 480px;
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
    margin-top: 2vh;
}

.stepper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px 24px 16px 24px;
    gap: 8px;
}

.step-item {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.step-item.active {
    color: var(--primary);
    font-weight: 600;
}

.step-arrow {
    color: var(--border-color);
    font-size: 0.75rem;
}

.step-container {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.step {
    min-width: 100%;
    padding: 16px 32px 40px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.step-header {
    margin-bottom: 8px;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
    letter-spacing: -0.025em;
}

.step-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 1;
    transform: translateY(0);
    transition: all 0.5s ease;
}

.form-group.hidden-field {
    opacity: 0;
    transform: translateY(10px);
    height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
    pointer-events: none;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 14px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
    background-color: #FFFFFF;
    color: var(--text-main);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94A3B8;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15, 23, 42, 0.05);
}

.helper-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.feedback-text {
    font-size: 0.875rem;
    color: var(--success);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px;
    background-color: var(--success-light);
    border-radius: 8px;
    animation: fadeIn 0.5s ease;
}

.btn {
    padding: 16px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    width: 100%;
    text-align: center;
    margin-top: 16px;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    background-color: var(--border-color);
    color: var(--text-muted);
    cursor: not-allowed;
    transform: none;
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border-color);
}

.btn-outline:hover {
    background-color: var(--bg-color);
}

.privacy-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
    background: #F1F5F9;
    padding: 12px 16px;
    border-radius: 8px;
}

.result-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    padding: 16px 0;
}

.icon-large {
    font-size: 48px;
    margin-bottom: 8px;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.address-card {
    background-color: #F8FAFC;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 8px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.5s ease;
}

.address-card.show {
    opacity: 1;
    transform: translateY(0);
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px 0;
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden-element {
    display: none !important;
}