:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --secondary: #10B981;
    --background: #0F172A;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --border: rgba(255, 255, 255, 0.1);
    --error: #EF4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--background);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* Background shapes for aesthetics */
.background-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: rgba(79, 70, 229, 0.3);
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: rgba(16, 185, 129, 0.2);
    bottom: -150px;
    right: -100px;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: rgba(236, 72, 153, 0.2);
    top: 40%;
    left: 60%;
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
    z-index: 10;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(to right, #60A5FA, #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-header p {
    color: var(--text-muted);
    font-size: 15px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin-top: 20px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.4s ease;
}

/* Form Steps */
.step {
    display: none;
    animation: fadeIn 0.4s ease;
}

.step.active {
    display: block;
}

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

h2 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 24px;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.row {
    display: flex;
    gap: 15px;
}

.half {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
}

input, select {
    width: 100%;
    padding: 14px 16px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 16px;
    font-family: inherit;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

option {
    background: var(--background);
    color: var(--text-main);
}

.button-group {
    display: flex;
    gap: 15px;
}

button {
    width: 100%;
    padding: 14px 20px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-text {
    background: transparent;
    color: var(--text-muted);
    padding: 10px;
}

.btn-text:hover {
    color: var(--text-main);
}

.error-message {
    color: var(--error);
    font-size: 13px;
    margin-top: 10px;
    min-height: 18px;
}

.text-center {
    text-align: center;
}

.hidden {
    display: none !important;
}

.mt-4 { margin-top: 16px; }

/* Loading Spinner */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Valuation Results */
.valuation-price {
    font-size: 48px;
    font-weight: 700;
    color: var(--secondary);
    margin: 20px 0 5px;
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.valuation-margin {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 20px;
}

.confidence-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.confidence-badge span {
    color: var(--secondary);
    text-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.cta-box {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    margin-top: 20px;
}

.cta-box h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.cta-box p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

@media (max-width: 480px) {
    .glass-card { padding: 30px 20px; }
    .valuation-price { font-size: 36px; }
}