:root {
    --avia-blue-700: #1565c0;
    --avia-blue-600: #1976d2;
    --avia-blue-500: #1e88e5;
    --avia-blue-400: #42a5f5;
    --avia-blue-300: #64b5f6;
    --avia-ink: #0f172a; /* متن تیره */
    --avia-ink-2: #334155; /* متن ثانویه */
    --avia-border: #e2e8f0; /* خط جداکننده */
    --avia-bg: #ffffff; /* پس‌زمینه اصلی */
    --avia-soft: #f1f5f9; /* پس‌زمینه نرم */
    --avia-error: #ef4444;
    --avia-success: #16a34a;
    --avia-radius: 18px;
    --avia-shadow: 0 12px 30px rgba(16, 112, 224, .12);
    --avia-shadow-soft: 0 8px 20px rgba(16, 112, 224, .08);
    --avia-t: .35s cubic-bezier(.22,.61,.36,1);
}

html, body {
    margin: 0;
    padding: 0;
    background: var(--avia-bg);
    color: var(--avia-ink);
    font-family: system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,"Noto Naskh Arabic",Tahoma,sans-serif
}

img {
    max-width: 100%;
    display: block
}

/* کانتینر اصلی */
.avia-container {
    min-height: 100svh;
    display: grid;
    grid-template-columns: 1.05fr 1.25fr; /* چپ تصویر / راست محتوا */
    background: radial-gradient(1200px 1200px at 120% -20%, rgba(30,136,229,.10), transparent 60%), radial-gradient(900px 900px at -10% 120%, rgba(66,165,245,.12), transparent 60%);
    font-family: peyda;
}

/* ستون تصویر (چپ) */
.avia-left {
    position: relative;
    padding: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(120deg, rgba(25,118,210,.08), rgba(100,181,246,.08));
    overflow: hidden;
}

.avia-illu-wrap {
    width: min(560px, 92%);
    aspect-ratio: 4 / 3;
    border-radius: calc(var(--avia-radius) + 6px);
    background: var(--avia-soft);
    box-shadow: var(--avia-shadow);
    position: relative;
    overflow: hidden;
    animation: aviaFloat 8s ease-in-out infinite;
    border: 1px solid rgba(30,136,229,.18);
}

.avia-illu {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 20px;
}

.avia-illu-badge {
    position: absolute;
    inset: auto auto 18px 18px;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(30,136,229,.20);
    box-shadow: var(--avia-shadow-soft);
    border-radius: 999px;
    padding: 8px 14px;
    font-weight: 600;
    color: var(--avia-blue-700);
    font-size: 14px;
}

@keyframes aviaFloat {
    0%,100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-8px)
    }
}

/* ستون محتوا (راست) */
.avia-right {
    padding: clamp(18px,3.5vw,36px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.avia-card {
    width: min(880px, 100%);
    background: #fff;
    border: 1px solid var(--avia-border);
    border-radius: calc(var(--avia-radius) + 6px);
    box-shadow: var(--avia-shadow);
    padding: clamp(16px, 2.8vw, 28px);
}

.avia-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 14px;
}

.avia-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg,var(--avia-blue-500),var(--avia-blue-400));
    color: #fff;
    font-size: 22px;
    box-shadow: var(--avia-shadow-soft);
    flex: 0 0 auto;
}

.avia-title {
    font-size: clamp(18px, 1.6vw, 24px);
    line-height: 1.35;
    margin: 0;
    color: var(--avia-ink);
    font-weight: 800;
}

.avia-desc {
    margin: .35rem 0 0 0;
    color: var(--avia-ink-2);
    font-size: 15px;
}

/* نوار پیشرفت */
.avia-progress {
    margin: 18px 0 14px;
    background: var(--avia-soft);
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--avia-border);
}

    .avia-progress > i {
        display: block;
        height: 100%;
        width: 0%;
        background: linear-gradient(90deg,var(--avia-blue-500),var(--avia-blue-300));
        transition: width var(--avia-t);
    }

.avia-step-label {
    font-size: 13px;
    color: var(--avia-ink-2);
    margin-bottom: 8px;
}

/* محتوای مرحله */
.avia-stage {
    position: relative;
    min-height: 280px;
}

.avia-step {
    opacity: 0;
    transform: translateX(28px);
    pointer-events: none;
    transition: opacity var(--avia-t), transform var(--avia-t);
    position: absolute;
    inset: 0;
    display: grid;
    align-content: start;
    gap: 16px;
}

    .avia-step.is-active {
        opacity: 1;
        transform: none;
        pointer-events: auto;
        position: relative;
        animation: aviaStepIn var(--avia-t);
    }

@keyframes aviaStepIn {
    from {
        opacity: 0;
        transform: translateX(24px)
    }

    to {
        opacity: 1;
        transform: none
    }
}

.avia-qgroup {
    padding: 14px;
    border: 1px solid var(--avia-border);
    border-radius: var(--avia-radius);
    background: #fafcff;
    transition: box-shadow var(--avia-t), border-color var(--avia-t);
}

    .avia-qgroup:hover {
        box-shadow: var(--avia-shadow-soft)
    }

.avia-qtitle {
    font-weight: 700;
    margin: 0 0 10px 0;
    color: var(--avia-ink)
}

.avia-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 10px;
}

.avia-option {
    border: 1px solid var(--avia-border);
    background: #fff;
    border-radius: 12px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: border-color var(--avia-t), transform var(--avia-t), box-shadow var(--avia-t);
}

    .avia-option input {
        accent-color: var(--avia-blue-600)
    }

    .avia-option:hover {
        transform: translateY(-2px);
        box-shadow: var(--avia-shadow-soft);
        border-color: rgba(30,136,229,.35)
    }

/* پیام خطا */
.avia-error {
    display: none;
    color: #b91c1c;
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    padding: 8px 12px;
    font-size: 13px;
}

    .avia-error.is-show {
        display: block
    }

/* دکمه‌ها */
.avia-actions {
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.avia-btn {
    appearance: none;
    border: 0;
    cursor: pointer;
    border-radius: 14px;
    padding: 12px 18px;
    font-weight: 800;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

    .avia-btn:disabled {
        opacity: .5;
        cursor: not-allowed;
        transform: none !important
    }

.avia-btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--avia-blue-600), var(--avia-blue-400));
    box-shadow: var(--avia-shadow);
}

    .avia-btn-primary:hover {
        transform: translateY(-1px)
    }

.avia-btn-ghost {
    background: #eef6ff;
    border: 1px solid rgba(25,118,210,.25);
    color: var(--avia-blue-700)
}

    .avia-btn-ghost:hover {
        background: #e3f2ff
    }

/* پیشنهاد مقاصد (از مرحله ۴ به بعد) */
.avia-suggest {
    display: none;
    margin-top: 6px;
}

    .avia-suggest.is-show {
        display: block;
        animation: aviaStepIn var(--avia-t)
    }

    .avia-suggest h4 {
        margin: 10px 0 10px;
        font-size: 16px
    }

.avia-suggest-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 10px;
}

.avia-dest-card {
    border: 1px solid var(--avia-border);
    border-radius: 16px;
    background: linear-gradient(180deg,#ffffff, #f7fbff);
    padding: 12px;
    box-shadow: var(--avia-shadow-soft);
    transition: transform var(--avia-t), box-shadow var(--avia-t), border-color var(--avia-t);
}

    .avia-dest-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--avia-shadow);
        border-color: rgba(30,136,229,.35)
    }

.avia-dest-title {
    font-weight: 800;
    margin: 0;
    color: var(--avia-blue-700)
}

.avia-tags {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px
}

.avia-tag {
    font-size: 12px;
    padding: 5px 8px;
    border-radius: 999px;
    background: #eaf4ff;
    border: 1px solid rgba(30,136,229,.25);
    color: #0b4a86;
}

/* ریسپانسیو */
@media (max-width: 1100px) {
    .avia-container {
        grid-template-columns: 1fr
    }

    .avia-left {
        order: -1
    }
    /* تصویر بالا */
    .avia-illu-wrap {
        width: min(720px, 96%);
        aspect-ratio: 16 / 10
    }

    .avia-suggest-grid {
        grid-template-columns: 1fr
    }

    .avia-options {
        grid-template-columns: 1fr
    }
}