/* === Root Variables & Theme === */
:root {
    --primary-color: #3e6bb4;
    --success-color: #1b8037;
    --error-color: #d32f2f;
    --warning-color: #ff9800;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --border-radius: 12px;
    --transition: 0.3s ease;
    --shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
    --spacing-xs: 6px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 40px;
    --input-border: #d1d1d1;
    --input-bg: #fff;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg-color) url('/_assets/img/bg.jpg') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    color: var(--text-color);
    padding: var(--spacing-lg);
}

/* === Logo === */
.logo {
    padding: var(--spacing-sm);
    text-align: center;
}

/* === Survey Container === */
.survey-container {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 850px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.6s ease;
    backdrop-filter: blur(4px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@media (hover: hover) {
    .survey-container:hover {
        transform: translateY(-4px);
        transition: transform var(--transition);
    }
}

/* === Titles === */
.survey-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.5px;
}

h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* === Form Structure === */
.survey-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* === Question Section === */
.question {
    margin-bottom: var(--spacing-md);
}

.question label {
    display: contents;
    font-size: 17px;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
}

/* === Input Elements === */
.question input,
.question select,
.question textarea,
.search-input {
    width: 100%;
    padding: 14px 16px !important;
    font-size: 16px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background-color: var(--input-bg);
    transition: all var(--transition);
    margin: 8px 0 !important;
    min-height: 56px;
}

.question input:focus,
.question select:focus,
.question textarea:focus,
.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(62, 107, 180, 0.25);
    outline: none;
}

/* === Radio & Checkbox === */
input[type="radio"],
input[type="checkbox"] {
    appearance: none;
    width: 26px;
    height: 20px !important;
    margin: 4px 6px !important;
    border: 2px solid var(--input-border);
    border-radius: 4px;
    background-color: #fff;
    cursor: pointer;
    position: relative;
    transition: all var(--transition);
    vertical-align: middle;
    padding: 5px !important;
    min-height: 26px !important;
}

input[type="radio"] {
    border-radius: 50%;
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

input[type="checkbox"]:checked::after {
    content: '✓';
    color: #fff;
    font-size: 13px;
    position: absolute;
    top: 1px;
    left: 4px;
}

input[type="radio"]:checked::after {
    content: '';
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* === Buttons === */
button {
    display: inline-block;
    padding: 12px 28px;
    font-size: 17px;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

button:focus-visible {
    outline: 3px solid var(--primary-color);
}

.previous-btn {
    background: #505d5b;
    color: #fff;
}

.previous-btn:hover {
    background: #6b7977;
}

.next-btn,
.save-btn {
    background: var(--success-color);
    color: #fff;
}
.submit-btn {
    background: var(--primary-color);
    color: #fff;
}

.next-btn:hover,
.save-btn:hover {
    background: #239848;
    transform: translateY(-2px);
}

.next-btn:active,
.save-btn:active {
    background: #1b8037;
    transform: scale(0.97);
}

.submit-btn:hover {
    background: #4375c7;
    transform: translateY(-2px);
}

.submit-btn:active {
    background: #4375c7;
    transform: scale(0.97);
}

/* === Button Loading State === */
button.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

button.loading::after {
    content: '';
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top: 2px solid #fff;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -9px 0 0 -9px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* === Steps Indicators === */
.steps-container {
    text-align: center;
    margin: var(--spacing-md) 0;
}

.step {
    display: inline-block;
    width: 18px;
    height: 18px;
    margin: 0 6px;
    background-color: #ccc;
    border-radius: 50%;
    color: #fff;
    line-height: 18px;
    font-size: 11px;
    transition: all var(--transition);
}

.step.active {
    background: var(--success-color);
    transform: scale(1.1);
}

.step.finish {
    background: #888;
}

/* === Buttons Container === */
.buttons-container {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.buttons-container button {
    flex: 1;
    min-width: 120px;
}

/* === Error Handling === */
.input-error {
    border-color: var(--error-color) !important;
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
}

/* === Responsive === */
@media (max-width: 768px) {
    .survey-container {
        padding: var(--spacing-md);
    }

    .survey-title {
        font-size: 24px;
    }

    button {
        font-size: 16px;
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    .survey-container {
        padding: var(--spacing-sm);
    }

    .survey-title {
        font-size: 20px;
    }

    .question label {
        font-size: 15px;
    }
}

/* === Print Mode === */
@media print {
    body {
        background: white !important;
    }

    .survey-container {
        box-shadow: none;
        border: none;
        background: white;
    }

    button,
    .logo {
        display: none !important;
    }
}

/* === Dark Mode === */
@media (prefers-color-scheme: dark) {
    body {
        background: #1e1e1e;
        color: #eee;
    }

    .survey-container {
        background: rgba(45, 45, 45, 0.95);
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    }

    .question input,
    .question select,
    .question textarea {
        background: #2d2d2d;
        border-color: #555;
        color: #fff;
    }

    .question label {
        color: #a0c4ff;
    }
}

.invalid {
    outline: 2px solid var(--error-color);
    outline-offset: -6px;
}

div.option {
    padding: 8px;
    border-bottom: 1px solid var(--input-border);
    cursor: pointer;
}

div.option:hover {
    transform: translateY(-4px);
    transition: transform var(--transition);
}

/* === RTL Support === */
[dir="rtl"],
.rtl {
    direction: rtl;
    text-align: right;
}

/* Flip text alignment for labels and inputs */
[dir="rtl"] .question label,
.rtl .question label {
    text-align: right;
}

[dir="rtl"] .survey-title,
.rtl .survey-title {
    text-align: center; /* keep titles centered */
}

/* Flip margins and paddings */
[dir="rtl"] input,
[dir="rtl"] select,
[dir="rtl"] textarea,
.rtl input,
.rtl select,
.rtl textarea {
    text-align: right;
    padding-right: 16px !important;
    padding-left: 14px !important;
}

/* Flip radio/checkbox positioning */
[dir="rtl"] input[type="checkbox"],
[dir="rtl"] input[type="radio"],
.rtl input[type="checkbox"],
.rtl input[type="radio"] {
    margin-right: 0 !important;
    margin-left: 6px !important;
}

/* Checkbox tick alignment */
[dir="rtl"] input[type="checkbox"]:checked::after,
.rtl input[type="checkbox"]:checked::after {
    left: auto;
    right: 4px;
}

/* Radio dot alignment */
[dir="rtl"] input[type="radio"]:checked::after,
.rtl input[type="radio"]:checked::after {
    left: 50%;
    right: auto;
    transform: translate(50%, -50%);
}

/* Buttons container should mirror layout */
[dir="rtl"] .buttons-container,
.rtl .buttons-container {
    flex-direction: row-reverse;
}

/* Steps alignment */
[dir="rtl"] .steps-container,
.rtl .steps-container {
    direction: rtl;
}

/* Option blocks */
[dir="rtl"] div.option,
.rtl div.option {
    text-align: right;
}