:root {
    /* BILD ADS Theme Colors */
    --bg-color: #050816;
    /* Dark Navy */
    --bg-secondary: #0b102b;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-color: #3b82f6;
    /* Bright Blue */
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    /* Blue to Purple */
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.2);
    --input-focus: #3b82f6;
    --error-color: #ef4444;

    --font-family: 'Inter', sans-serif;
    --transition-speed: 0.4s;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header */
.site-header {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 100;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 1px;
    color: white;
    text-transform: uppercase;
}

/* Progress Bar */
.progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    z-index: 90;
}

.progress-bar {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* Form Container */
.form-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

/* Steps / Slides */
.step {
    width: 100%;
    opacity: 0;
    /* transform: translateY(20px); Removed default transform to handle via classes */
    transition: all var(--transition-speed) cubic-bezier(0.25, 1, 0.5, 1);
    display: none;
    /* Hidden by default */
}

.step.active {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

/* Animations */
.step.fade-out-up {
    opacity: 0;
    transform: translateY(-50px);
    display: block;
}

.step.fade-out-down {
    opacity: 0;
    transform: translateY(50px);
    display: block;
}

.step.fade-in-up {
    animation: fadeInUp var(--transition-speed) forwards;
}

.step.fade-in-down {
    animation: fadeInDown var(--transition-speed) forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Typography */
.question-number {
    color: var(--accent-color);
    font-size: 1rem;
    margin-bottom: 1rem;
    display: block;
    font-weight: 500;
}

h1,
h2 {
    font-size: 2rem;
    font-weight: 400;
    /* Light/Regular feel like Typeform */
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 300;
}

/* Inputs */
.input-group {
    margin-bottom: 2rem;
    position: relative;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"] {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--input-border);
    color: var(--text-primary);
    font-size: 1.8rem;
    padding: 10px 0;
    outline: none;
    font-family: var(--font-family);
    transition: border-color 0.3s;
}

input:focus {
    border-color: var(--accent-color);
}

input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

/* Multiple Choice Options */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.option-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
}

.option-item .key-hint {
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    margin-right: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.option-item.selected {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* Buttons */
.btn-group {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

button {
    padding: 12px 32px;
    font-size: 1.1rem;
    border-radius: 50px;
    /* Pill shape */
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

/* Back Button */
.back-button-container {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 95;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    /* Disabled when invisible */
}

.back-button-container.visible {
    opacity: 1;
    pointer-events: auto;
}

.btn-back {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    transition: all 0.3s;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-back:hover {
    color: var(--accent-color);
    transform: translateX(-5px);
}

.back-text {
    display: none;
    /* Hidden by default, maybe show on hover or desktop */
}

@media (min-width: 768px) {
    .back-text {
        display: inline;
    }
}

/* Error Message */
.error-message {
    color: var(--error-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}

.error-message.visible {
    display: block;
}

/* Branding Footer */
.branding-footer {
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
}

/* Responsive */
@media (max-width: 600px) {

    h1,
    h2 {
        font-size: 1.5rem;
    }

    input {
        font-size: 1.4rem;
    }

    .form-container {
        padding: 20px;
    }

    .option-item {
        padding: 10px 15px;
        font-size: 1rem;
    }
}
/* New Logo Styles */
.logo-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    width: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%); /* Light Blue to Indigo */
    box-shadow: 0 4px 10px rgba(56, 189, 248, 0.3);
}

.logo-icon-inner {
    height: 18px;
    width: 18px;
    background-color: white;
    border-radius: 5px;
}

.logo-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.025em;
    color: white;
}