@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300..700&display=swap');

:root {
    /* Premium Navy & White Palette */
    --bg-dark: #050b14;
    --bg-main: #0a1426;
    --surface-color: #111f38;
    --surface-hover: #172a4a;
    --input-bg: #070e1c;
    
    --primary-color: #FFFFFF;
    --primary-hover: #f0f0f0;
    
    --text-main: #FFFFFF;
    --text-muted: #a3b8cc;
    --border-color: #1e3357;
    --border-light: rgba(255, 255, 255, 0.15);
    
    --error-color: #ff4d4d;
    --success-color: #2ECC71;
    
    --font-family: 'Bricolage Grotesque', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

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

body {
    font-family: var(--font-family);
    background: radial-gradient(circle at top right, var(--bg-main) 0%, var(--bg-dark) 100%);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Background Texture/Grid for premium depth */
.app-container::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
    pointer-events: none;
}

/* Form Section */
.form-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    position: relative;
    overflow-y: auto;
}

/* The central card */
.form-container {
    width: 100%;
    max-width: 640px;
    background: linear-gradient(180deg, var(--surface-color) 0%, #0d192e 100%);
    border: 1px solid var(--border-color);
    border-top: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 4rem;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(0, 0, 0, 0.2); /* Double shadow for crisp edge */
}

/* Progress bar */
.progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--input-bg);
    margin-bottom: 1.5rem;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.5);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #A0B4D1, #FFFFFF);
    width: 33.33%;
    transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 0 10px rgba(255,255,255,0.4);
}

.step-indicator {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.form-step {
    display: none;
    animation: fadeInStep 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    opacity: 0;
    transform: translateY(15px);
}

.form-step.active {
    display: block;
}

@keyframes fadeInStep {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-step h2 {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-main);
    font-weight: 600;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.subtitle {
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1.125rem;
    font-weight: 300;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 2.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 1rem;
    font-weight: 500;
    font-size: 1rem;
    color: var(--primary-color);
}

/* Radio & Checkbox Cards */
.radio-group, .checkbox-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.radio-group.vertical {
    grid-template-columns: 1fr;
    gap: 1rem;
}

.checkbox-group {
    grid-template-columns: 1fr;
    gap: 1rem;
}

.radio-card, .checkbox-card {
    position: relative;
    cursor: pointer;
    display: block;
}

.radio-card input, .checkbox-card input {
    position: absolute;
    opacity: 0;
}

/* The card style */
.card-content {
    display: flex;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.radio-card input:checked + .card-content,
.checkbox-card input:checked + .card-content {
    background-color: var(--surface-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2), inset 0 0 0 1px var(--primary-color);
}

.radio-card:hover .card-content,
.checkbox-card:hover .card-content {
    border-color: var(--text-muted);
}

/* Radio rows for vertical lists */
.radio-row {
    display: flex;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    color: var(--text-muted);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.radio-row:hover {
    border-color: var(--text-muted);
}

.radio-row input {
    margin-right: 1.25rem;
    appearance: none;
    background-color: transparent;
    margin-left: 0;
    font-size: inherit;
    color: currentColor;
    width: 1.25rem;
    height: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: grid;
    place-content: center;
    transition: var(--transition);
}

.radio-row input::before {
    content: "";
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    transform: scale(0);
    transition: 0.2s transform ease-in-out;
    background-color: var(--bg-main);
}

.radio-row:has(input:checked) {
    background-color: var(--surface-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2), inset 0 0 0 1px var(--primary-color);
}

.radio-row:has(input:checked) input {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.radio-row:has(input:checked) input::before {
    transform: scale(1);
}

/* Select */
.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 0.8rem;
}

select {
    width: 100%;
    appearance: none;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 1.25rem 1.5rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color);
}

/* Inputs */
.text-input {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 1.25rem 1.5rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color), 0 0 15px rgba(255,255,255,0.05);
}

.text-input::placeholder {
    color: #4a5c78;
}

/* Buttons */
.actions {
    margin-top: 3.5rem;
    display: flex;
    justify-content: flex-end;
}

.actions.split {
    justify-content: space-between;
}

.btn {
    padding: 1.25rem 2.5rem;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-main);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.15);
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
}

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

/* Error States */
.error-state {
    animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

.error-state .radio-card,
.error-state .radio-row,
.error-state .checkbox-card,
.error-state .card-content {
    border-color: var(--error-color) !important;
}

.error-state select,
.error-state input[type="text"],
.error-state input[type="email"],
.error-state input[type="tel"] {
    border-color: var(--error-color) !important;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Warning & Success States */
.pf-warning, .success-state {
    text-align: center;
    padding: 3rem 0;
}

.icon-warning, .icon-success {
    font-size: 5rem;
    margin-bottom: 2rem;
}

.icon-success {
    color: var(--success-color);
}

.pf-warning p, .success-state p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 992px) {
    .form-section {
        padding: 2rem 1rem;
    }
}

@media (max-width: 600px) {
    .form-container {
        padding: 2.5rem 1.5rem;
        border-radius: 12px;
    }
    
    .form-step h2 {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .radio-group, .checkbox-group {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column-reverse;
        gap: 1rem;
    }
    
    .actions.split {
        flex-direction: column-reverse;
    }
    
    .btn {
        width: 100%;
        padding: 1.125rem;
    }
}