/**
 * DoliForms - Slideshow mode styles
 *
 * Copyright (C) 2025 Massaoud Bouzenad <massaoud@dzprod.net>
 *
 * Companion stylesheet for js/respond_slideshow.js
 * Provides progress bar, navigation buttons, slide transitions,
 * validation shake animation and error messages.
 *
 * @file    css/respond_slideshow.css
 * @ingroup doliforms
 */

/* =========================================================================
   PROGRESS BAR
   ========================================================================= */

.doliforms-progress-wrapper {
    margin-bottom: 30px;
}

.doliforms-progress-bar {
    width: 100%;
    height: 6px;
    background: #e0e0e0;
    border-radius: 3px;
    overflow: hidden;
}

.doliforms-progress-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 3px;
    transition: width 0.4s ease;
}

.doliforms-progress-text {
    text-align: center;
    margin-top: 8px;
    font-size: 13px;
    color: #888;
    font-weight: 500;
}

/* =========================================================================
   SLIDE TRANSITIONS
   ========================================================================= */

.doliforms-question {
    /* Slides hidden by default; JS toggles display */
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.doliforms-question.slide-active {
    opacity: 1;
    transform: translateY(0);
}

/* Consent block follows the same pattern */
.doliforms-consent {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.doliforms-consent[style*="display: block"] {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================================================
   NAVIGATION BUTTONS
   ========================================================================= */

.doliforms-slideshow-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid #e0e0e0;
    flex-wrap: wrap;
}

.btn-slide {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
    line-height: 1;
}

.btn-slide .arrow {
    font-size: 16px;
}

/* Previous */
.btn-prev {
    background: #f0f0f0;
    color: #555;
    border-color: #ddd;
}

.btn-prev:hover {
    background: #e0e0e0;
    border-color: #ccc;
    color: #333;
}

/* Next */
.btn-next {
    background: #007bff;
    color: #fff;
}

.btn-next:hover {
    background: #0056b3;
}

/* Skip */
.btn-skip {
    background: transparent;
    color: #888;
    border-color: #ddd;
}

.btn-skip:hover {
    background: #f9f9f9;
    color: #555;
    border-color: #bbb;
}

/* Submit */
.btn-submit {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: #fff;
    border-color: transparent;
}

.btn-submit:hover {
    background: linear-gradient(135deg, #218838, #1aa882);
    box-shadow: 0 2px 8px rgba(40, 167, 69, 0.35);
}

/* Start */
.btn-start {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border-color: transparent;
    padding: 14px 36px;
    font-size: 16px;
}

.btn-start:hover {
    background: linear-gradient(135deg, #5a6fd6, #6a4194);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.4);
}

/* Disabled state (mandatory question without answer) */
.btn-slide.btn-disabled,
.btn-slide:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* Focus outlines for keyboard nav */
.btn-slide:focus-visible {
    outline: 3px solid #667eea;
    outline-offset: 2px;
}

/* =========================================================================
   INTRO SLIDE
   ========================================================================= */

.doliforms-intro-slide {
    display: none;
    text-align: center;
    padding: 40px 20px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.doliforms-intro-slide.slide-active {
    opacity: 1;
    transform: translateY(0);
}

.doliforms-intro-slide .intro-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.doliforms-intro-slide .intro-title {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
}

.doliforms-intro-slide .intro-description {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    max-width: 560px;
    margin: 0 auto 20px;
}

.doliforms-intro-slide .intro-meta {
    font-size: 13px;
    color: #999;
}

/* =========================================================================
   SLIDE VALIDATION ERROR
   ========================================================================= */

.doliforms-slide-error {
    margin-top: 12px;
    padding: 10px 14px;
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid #dc3545;
    border-radius: 4px;
    font-size: 14px;
    animation: fadeInError 0.3s ease;
}

@keyframes fadeInError {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   SHAKE ANIMATION (validation fail)
   ========================================================================= */

@keyframes doliforms-shake {
    0%, 100% { transform: translateX(0); }
    15%      { transform: translateX(-8px); }
    30%      { transform: translateX(8px); }
    45%      { transform: translateX(-6px); }
    60%      { transform: translateX(6px); }
    75%      { transform: translateX(-3px); }
    90%      { transform: translateX(3px); }
}

.doliforms-question.shake {
    animation: doliforms-shake 0.5s ease;
}

/* =========================================================================
   RESPONSIVE
   ========================================================================= */

@media (max-width: 600px) {
    .doliforms-slideshow-nav {
        flex-direction: column;
        gap: 8px;
    }

    .btn-slide {
        justify-content: center;
        width: 100%;
        padding: 14px 20px;
    }

    /* On mobile, order: Next/Submit first, then Skip, then Prev */
    .btn-next  { order: 1; }
    .btn-submit { order: 1; }
    .btn-skip  { order: 2; }
    .btn-prev  { order: 3; }
}