/**
 * STMICA - Sitamarhi Institute of Computer Application
 * Responsive Media Queries & Mobile-First Breakpoints
 * 
 * Breakpoints:
 * - Desktop: 1200px+
 * - Laptop: 992px - 1199px
 * - Tablet: 768px - 991px
 * - Mobile: 0px - 767px
 */

/* -----------------------------------------------------------------------------
   Laptop & Medium Desktops (max-width: 1199px)
----------------------------------------------------------------------------- */
@media (max-width: 1199px) {
    :root {
        --container-padding: 1.25rem;
    }

    .why-section-grid {
        grid-template-columns: 1fr 1.2fr 1fr;
        gap: var(--space-6);
    }

    .bottom-info-grid {
        gap: var(--space-4);
    }
}

/* -----------------------------------------------------------------------------
   Tablet & Small Laptops (max-width: 991px)
----------------------------------------------------------------------------- */
@media (max-width: 991px) {
    :root {
        --space-16: 3rem;
        --space-20: 3.5rem;
    }

    /* Header & Mobile Navigation */
    .nav-toggle {
        display: block;
    }

    .nav-actions {
        gap: var(--space-2);
    }

    .nav-cta-btn {
        padding: 0.45rem 1rem;
        font-size: var(--text-xs);
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        max-width: 85vw;
        height: 100vh;
        background-color: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-16) var(--space-6) var(--space-8);
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
        transition: right var(--transition-base);
        z-index: 1050;
        overflow-y: auto;
        gap: var(--space-2);
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-base);
        justify-content: space-between;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background-color: var(--bg-subtle);
        border-radius: var(--radius-sm);
        margin: var(--space-1) 0 var(--space-2) var(--space-4);
        display: none;
    }

    .nav-dropdown.show {
        display: block;
    }

    .nav-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background-color: rgba(15, 23, 42, 0.5);
        backdrop-filter: blur(2px);
        z-index: 1040;
    }

    .nav-backdrop.show {
        display: block;
    }

    /* Hero Section Stack */
    .hero-section {
        padding: var(--space-10) 0 var(--space-16) 0;
    }

    .hero-section .grid-cols-2 {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        justify-content: center;
    }

    .hero-visual-frame {
        max-width: 420px;
    }

    /* Features Bar Stack to 2x2 */
    .features-bar {
        margin-top: -2rem;
        padding: var(--space-5);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    /* Courses Grid to 2 Columns */
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    /* Why Choose STMICA Stack */
    .why-section-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .why-visual-frame {
        max-width: 450px;
        margin: 0 auto;
    }

    .stats-column {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    /* Bottom Info 3 Cards to Vertical Stack */
    .bottom-info-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    /* Footer Grid */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    /* Course Details Layout */
    .course-detail-layout {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .course-detail-sidebar {
        position: static;
    }

    /* Process Grid */
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Portal Entry Grid */
    .portal-entry-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    /* Portal Dashboard Grid */
    .portal-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    /* CTA Banner */
    .cta-banner {
        flex-direction: column;
        text-align: center;
        padding: var(--space-6);
        gap: var(--space-6);
    }

    .cta-banner-content {
        flex-direction: column;
        text-align: center;
    }
}

/* -----------------------------------------------------------------------------
   Mobile Devices (max-width: 767px)
----------------------------------------------------------------------------- */
@media (max-width: 767px) {
    :root {
        --text-5xl: 2.25rem;
        --text-4xl: 1.85rem;
        --container-padding: 1rem;
    }

    /* Top Utility Bar on Small Phones */
    .top-bar-contact {
        display: none; /* Keep clean on small phones; portal links stay prominent */
    }

    .top-bar .container {
        justify-content: center;
    }

    .top-bar-portals {
        gap: var(--space-3);
        font-size: 0.72rem;
    }

    /* Header */
    .navbar {
        height: 68px;
    }

    .brand-emblem {
        width: 38px;
        height: 38px;
    }

    .brand-name {
        font-size: 1.15rem;
    }

    .brand-tagline {
        font-size: 0.58rem;
    }

    .nav-cta-btn {
        padding: 0.35rem 0.75rem;
        font-size: 0.75rem;
    }

    /* Hero */
    .hero-title {
        font-size: 1.95rem;
    }

    .hero-subtitle {
        font-size: var(--text-base);
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

    /* Features Grid (1 or 2 Columns) */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    .feature-item {
        padding: var(--space-2) 0;
    }

    /* Courses Grid to 1 Column */
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .courses-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    /* Stats Grid to 1 or 2 Columns */
    .stats-column {
        grid-template-columns: 1fr;
    }

    /* Recognition Badges in Card */
    .recognition-badges-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);
    }

    .recognition-badge-card {
        padding: var(--space-2) 0.2rem;
    }

    .recognition-badge-card h5 {
        font-size: 0.62rem;
    }

    /* Process Grid */
    .process-grid {
        grid-template-columns: 1fr;
    }

    /* Portal Grids */
    .portal-grid-3, .portal-grid-2 {
        grid-template-columns: 1fr;
    }

    .portal-header-main {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .portal-user-meta {
        width: 100%;
        justify-content: space-between;
    }

    .portal-banner-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .lightbox-prev { left: 10px; }
    .lightbox-next { right: 10px; }
    .lightbox-close { top: -36px; right: 10px; }

    /* Footer Grid */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--space-2);
    }

    /* Ensure minimum touch targets */
    .btn {
        min-height: 44px;
    }

    .portal-link, .nav-link, .footer-links a, .update-item {
        min-height: 40px;
        display: inline-flex;
        align-items: center;
    }
}

/* Very narrow devices (< 380px) */
@media (max-width: 379px) {
    .brand-name {
        font-size: 1rem;
    }
    .brand-tagline {
        display: none;
    }
    .recognition-badges-grid {
        grid-template-columns: 1fr;
    }
}