:root {
    --opal-primary: #0d6efd;
    --opal-bg: #f8fafc;
    --opal-card: #ffffff;
    --opal-gradient: linear-gradient(180deg, #f0f6ff 0%, #ffffff 100%);
}

html,
body {
    font-family: "Cairo", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--opal-bg);
}

.hero {
    background: var(--opal-gradient);
}

.hero-logo {
    width: 120px;
    height: auto;
}

.main-title {
    font-weight: 900;
    letter-spacing: -0.3px;
}

.card {
    border: 1px solid rgba(0, 0, 0, .06);
    border-radius: 14px;
}

.card .card-header {
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    border-top-left-radius: 14px;
    border-top-right-radius: 14px;
}

.instructions-card .card-title i,
.action-card .card-title i {
    opacity: .9;
}

/* قائمة خطوات أنيقة */
.step-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
}

.step-list>li {
    position: relative;
    padding-inline-start: 2.25rem;
    margin-bottom: .75rem;
}

.step-list>li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    inset-inline-start: 0;
    top: 0;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: #e9f2ff;
    color: #0b5ed7;
    font-weight: 700;
    font-size: .9rem;
}

/* أزرار التاب */
.nav-tabs .nav-link {
    border: none;
    color: inherit;
}

.nav-tabs .nav-link.active {
    background: #f7f9fc;
    border-radius: 10px;
    font-weight: 700;
}

/* حجم زر التسجيل */
.btn-lg {
    padding-block: .9rem;
    font-weight: 700;
}

/* تراكب بسيط للوضع الداكن */
@media (prefers-color-scheme: dark) {
    :root {
        --opal-bg: #0b0f14;
        --opal-card: #11161d;
        --opal-gradient: linear-gradient(180deg, #0f1620 0%, #0b0f14 100%);
    }

    body {
        background: var(--opal-bg);
        color: #ffffff;
    }

    .card {
        background: var(--opal-card);
        border-color: rgba(255, 255, 255, .06);
    }

    .card .card-header {
        border-bottom-color: rgba(255, 255, 255, .08);
        background: transparent;
    }

    .nav-tabs .nav-link.active {
        background: rgba(255, 255, 255, .06);
    }

    .form-text,
    .text-body-secondary {
        color: #ffffff !important;
    }

    .border-top,
    .border-bottom {
        border-color: rgba(255, 255, 255, .08) !important;
    }
}

/* Timeline */
.timeline-steps {
    position: relative;
    padding: 1rem 0
}

.timeline-steps .step {
    position: relative;
    text-align: center
}

.timeline-steps .step .circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    margin: 0 auto 8px auto;
    border: 2px solid rgba(0, 0, 0, .12)
}

.timeline-steps .step .label {
    font-size: .9rem
}

.timeline-steps .step.done .circle {
    background: #ffffff;
    border-color: #28a745
}

.timeline-steps .step.active .circle {
    background: #ffffff;
    border-color: #0d6efd
}

.timeline-steps .step.pending .circle {
    background: #f8f9fa
}

.timeline-steps .rail {
    position: absolute;
    top: 17px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: rgba(0, 0, 0, .12)
}

@media (prefers-color-scheme: dark) {
    .timeline-steps .rail {
        background: rgba(255, 255, 255, .12)
    }

    .timeline-steps .step .circle {
        border-color: rgba(255, 255, 255, .18)
    }
}