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

:root {
    --bg-dark: #0f172a;
    --text-light: #f8fafc;
    --accent-orange: #fb6b25; /* RIVO orange */
    --accent-orange-hover: #e05815;
    --border-color: #334155;
    --btn-bg: #1e293b;
    --btn-hover: #334155;
    --selected-bg: rgba(251, 107, 37, 0.15);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Prevent scrolling, single page feel */
}

/* TOP BAR */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    border-bottom: 1px solid var(--border-color);
}

.logo-text {
    font-weight: 900;
    font-size: 1.2rem;
    letter-spacing: 2px;
    color: var(--text-light);
}

.progress-container {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    width: 200px;
}

.progress-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: #94a3b8;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 0; /* Industrial sharp edges */
}

.progress-fill {
    height: 100%;
    background-color: var(--accent-orange);
    width: 0%;
    transition: width 0.4s ease;
}

/* QUESTION CONTAINER */
.question-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start; /* Left aligned typeform style */
    padding: 40px 10%;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
    position: relative;
}

/* ANIMATION */
.slide-in {
    animation: slideIn 0.5s forwards ease;
}
.slide-out {
    animation: slideOut 0.4s forwards ease;
}

@keyframes slideIn {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}
@keyframes slideOut {
    0% { opacity: 1; transform: translateY(-30px); }
    100% { opacity: 0; transform: translateY(-30px); }
}

/* QUESTION STYLES */
.q-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 40px;
    color: #fff;
    max-width: 800px;
}

.q-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 500px;
}

/* Option Button */
.opt-btn {
    background-color: var(--btn-bg);
    border: 1px solid var(--border-color);
    color: #cbd5e1;
    padding: 15px 20px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    border-radius: 0; /* Industrial */
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.opt-btn:hover {
    background-color: var(--btn-hover);
    border-color: #475569;
}

.opt-btn.selected {
    background-color: var(--selected-bg);
    border-color: var(--accent-orange);
    color: #fff;
}

/* Scale 1-5 */
.scale-container {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.scale-btn {
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--btn-bg);
    border: 1px solid var(--border-color);
    color: #fff;
    font-size: 1.5rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.scale-btn.selected {
    background-color: var(--accent-orange);
    border-color: var(--accent-orange);
}

.scale-labels {
    display: flex;
    justify-content: space-between;
    width: 340px; /* 5 * 60 + 4 * 10 */
    margin-top: 10px;
    font-size: 0.8rem;
    color: #94a3b8;
    text-transform: uppercase;
    font-weight: 600;
}

/* Text Inputs */
.text-input {
    width: 100%;
    max-width: 700px;
    background-color: transparent;
    border: none;
    border-bottom: 2px solid var(--border-color);
    color: #fff;
    font-size: 1.5rem;
    padding: 15px 0;
    outline: none;
    transition: border-color 0.3s;
    font-family: 'Inter', sans-serif;
    resize: none;
    min-height: 50px;
}

.text-input:focus {
    border-bottom-color: var(--accent-orange);
}

/* BOTTOM BAR */
.bottom-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    border-top: 1px solid var(--border-color);
}

.keyboard-hint {
    font-size: 0.8rem;
    color: #64748b;
}

.keyboard-hint strong {
    color: #cbd5e1;
}

.btn {
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--accent-orange);
    color: #fff;
}
.btn-primary:not(:disabled):hover {
    background-color: var(--accent-orange-hover);
}

.btn-secondary {
    background-color: var(--btn-bg);
    color: #cbd5e1;
}
.btn-secondary:not(:disabled):hover {
    background-color: var(--btn-hover);
}

/* Responsive */
@media (max-width: 768px) {
    .q-title { font-size: 1.8rem; }
    .scale-btn { width: 50px; height: 50px; font-size: 1.2rem; }
    .scale-labels { width: 290px; }
    .bottom-bar { flex-direction: column-reverse; gap: 15px; padding: 20px; }
    .btn { width: 100%; }
    .keyboard-hint { display: none; }
    .top-bar { padding: 15px 20px; }
    .question-container { padding: 30px 20px; }
}