/**
 * Mobile Responsive — Full Overhaul
 * Fixes layout, overflow, sidebar, buttons, grids for ≤768px
 */

/* ===== Sidebar Mobile Toggle ===== */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    width: 44px;
    height: 44px;
    background: rgba(35, 41, 55, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent-primary);
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 4px;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.mobile-menu-toggle.active .hamburger span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle.active .hamburger span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 99;
    animation: fadeIn 0.3s ease;
}
.sidebar-overlay.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== MOBILE: ≤768px ===== */
@media (max-width: 768px) {

    /* Show hamburger */
    .mobile-menu-toggle {
        display: flex;
    }

    /* Sidebar off-screen by default */
    .sidebar {
        position: fixed;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 100;
        width: 260px;
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    /* Main content fills screen */
    .main-content {
        margin-left: 0 !important;
        padding: 16px !important;
        padding-top: 68px !important;
        width: 100%;
        min-width: 0;
        overflow-x: hidden;
    }

    /* Page headers stack */
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .page-title {
        font-size: 22px;
    }

    /* Dashboard header */
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .dashboard-header .header-actions {
        width: 100%;
    }

    .dashboard-header .header-actions .btn {
        width: 100%;
    }

    /* Stats row — 2 columns on mobile */
    .stats-row {
        display: grid !important;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .stat-card-new {
        min-width: 0 !important;
    }

    /* Dashboard content columns stack */
    .dashboard-content {
        flex-direction: column !important;
    }

    .dash-col:first-child,
    .dash-col:last-child {
        flex: 1 1 auto;
    }

    /* Task cards — auto height on mobile */
    .task-card-equal,
    #assigned-tasks-card.task-card-equal {
        max-height: none;
        min-height: auto;
    }

    /* Cards — reduce padding */
    .card {
        padding: 16px;
    }

    /* Momentum timeline — smaller rings */
    .pulse-ring {
        width: 30px;
        height: 30px;
    }
    .pulse-count { font-size: 10px; }
    .pulse-day-label { font-size: 9px; }

    /* Readiness chart — smaller */
    .pie-chart-container {
        width: 180px;
        height: 180px;
    }
    .pie-center-content {
        width: 100px;
        height: 100px;
    }
    .pie-value { font-size: 32px; }

    /* Modals full width */
    .modal-content,
    .custom-modal {
        width: 92% !important;
        max-width: 92% !important;
        margin: 16px auto;
    }

    /* ===== Interview Page ===== */
    .interview-layout {
        flex-direction: column !important;
    }

    .left-panel,
    .right-panel {
        width: 100% !important;
        min-width: 0 !important;
    }

    .interview-actions.bottom-right {
        flex-direction: column;
        gap: 10px;
    }

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

    /* ===== Resume Page ===== */
    .resume-layout,
    .resume-grid {
        grid-template-columns: 1fr !important;
    }

    /* ===== Skill Gap Page ===== */
    .analysis-hero {
        grid-template-columns: 1fr !important;
    }

    .skill-grid,
    .skills-grid {
        grid-template-columns: 1fr !important;
    }

    .role-input-container {
        width: 100% !important;
    }

    /* Explorer drawer full width on mobile */
    .explorer-drawer {
        width: 100% !important;
        right: -100% !important;
    }
    .explorer-drawer.active {
        right: 0 !important;
    }

    /* ===== Roadmap Page ===== */
    .roadmap-overview {
        flex-direction: column !important;
    }

    .roadmap-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    /* ===== Profile Page ===== */
    .profile-layout {
        flex-direction: column !important;
        gap: 16px;
    }

    .profile-sidebar-card {
        width: 100% !important;
        min-width: 0 !important;
    }

    .profile-main-content {
        width: 100% !important;
        min-width: 0 !important;
    }

    .overview-grid {
        grid-template-columns: 1fr !important;
    }

    .progress-row {
        flex-direction: column;
        gap: 10px;
    }

    .progress-mini-card {
        width: 100%;
    }

    .social-showcase-grid {
        grid-template-columns: 1fr !important;
    }

    /* Heatmap scroll on mobile */
    .heatmap-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .heatmap-graph {
        min-width: 700px;
    }

    /* ===== Feedback Page ===== */
    .feedback-grid {
        grid-template-columns: 1fr !important;
    }

    /* ===== Auth Page ===== */
    .auth-container {
        flex-direction: column;
    }

    .auth-sidebar {
        padding: 24px 16px;
    }

    .auth-hero {
        display: none !important;
    }

    .auth-form-wrap {
        max-width: 100%;
    }

    /* ===== Index / Landing Page ===== */
    .hero {
        min-height: auto;
        padding: 100px 16px 60px;
    }

    .hero-title {
        font-size: clamp(28px, 8vw, 48px) !important;
    }

    .hero-subtitle {
        font-size: 15px !important;
        padding: 0 8px;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        padding: 0 8px;
    }

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

    .features-highlights {
        padding: 60px 0;
    }

    .features-grid {
        grid-template-columns: 1fr !important;
        gap: 16px;
    }

    .feat-header {
        padding: 24px 20px 16px;
    }

    .feat-body {
        padding: 0 20px 24px;
    }

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

    /* Steps slider */
    .steps3d-stage {
        height: auto !important;
    }

    /* FAQ */
    .faq-container {
        max-width: 100%;
    }

    .faq-trigger {
        padding: 14px 16px;
    }

    .faq-question {
        font-size: 14px;
        padding-right: 16px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr !important;
        gap: 24px;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    /* Back to top */
    .back-to-top {
        bottom: 20px;
        right: 20px;
    }

    /* ===== Global Touch Targets ===== */
    .btn,
    button:not(.hamburger span),
    .sidebar-link {
        min-height: 44px;
    }

    /* Prevent horizontal overflow everywhere */
    html, body {
        overflow-x: hidden;
    }

    /* Legal pages */
    .legal-content {
        padding: 16px !important;
    }

    .legal-nav {
        flex-direction: column;
        gap: 8px;
    }

    /* Onboarding */
    .wizard-card {
        padding: 20px 16px;
    }

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

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

    /* Celebration modal */
    .celebration-modal {
        width: 92% !important;
        max-width: 92% !important;
        padding: 24px 16px;
    }
}

/* ===== SMALL MOBILE: ≤480px ===== */
@media (max-width: 480px) {
    .stats-row {
        grid-template-columns: 1fr !important;
    }

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

    .hero-title {
        font-size: 26px !important;
    }

    .pie-chart-container {
        width: 150px;
        height: 150px;
    }
    .pie-center-content {
        width: 80px;
        height: 80px;
    }
    .pie-value { font-size: 24px; }
    .pie-label { font-size: 8px; letter-spacing: 1.5px; }
}

/* ===== TABLET: 769px–1024px ===== */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }

    .main-content {
        margin-left: 220px;
    }

    .sidebar.collapsed ~ .main-content {
        margin-left: 70px;
    }

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

    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
}