/* ===================================================
   ALBIT — m.css  Mobile Optimization
   Breakpoints: 1024px (tablet) | 768px (mobile) | 480px (small)
   이 파일은 style.css 와 독립적으로 모바일만 담당합니다.
   =================================================== */

/* ── 햄버거 버튼: 데스크탑에서는 숨김 ── */
.nav-toggle { display: none; }


/* ══════════════════════════════════════
   TABLET  (max-width: 1024px)
══════════════════════════════════════ */
@media (max-width: 1024px) {
    .container { padding: 0 24px; }

    .hero h1 { font-size: 2.5rem; }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .category-card { padding: 30px; }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    .exhibition-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
}


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

    /* ── SCROLLBAR 숨김 ── */
    ::-webkit-scrollbar { width: 0; height: 0; }

    /* ── HEADER ── */
    header {
        height: 56px;
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 999;
        backdrop-filter: blur(16px);
        background: rgba(14,14,14,0.92);
    }

    .header-container {
        padding: 0 16px;
        height: 56px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .logo { gap: 8px; }
    .logo img { width: 28px; height: 28px; }
    .logo-text { font-size: 1rem; }

    /* ── 햄버거 버튼 ── */
    .nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
        margin-left: auto;
        z-index: 1001;
    }
    .nav-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--neon-blue);
        border-radius: 2px;
        transition: transform 0.3s, opacity 0.3s;
    }
    .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle.open span:nth-child(2) { opacity: 0; }
    .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* ── NAV 드로어 ── */
    .main-nav {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 56px; left: 0; right: 0;
        background: rgba(10,10,10,0.98);
        padding: 8px 0 20px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        z-index: 998;
        gap: 0;
        transform: translateY(-110%);
        transition: transform 0.3s ease;
        pointer-events: none;
    }
    .main-nav.open {
        transform: translateY(0);
        pointer-events: auto;
    }
    .nav-item {
        padding: 13px 24px;
        border-radius: 0;
        font-size: 0.9rem;
        border-bottom: 1px solid rgba(255,255,255,0.04);
        justify-content: flex-start;
    }
    .custom-lang-btn {
        margin: 12px 24px 0;
        align-self: flex-start;
    }

    /* ── BODY 상단 여백 (fixed header 보상) ── */
    body { padding-top: 56px; }

    /* ── HERO ── */
    .hero {
        min-height: 85vh;
        padding: 40px 0 30px;
    }
    .hero-orb { opacity: 0.35; }
    .hero-orb.orb1, .hero-orb.orb2 { display: none; }

    .hero h1,
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.2;
        white-space: normal;
        word-break: keep-all;
    }
    .hero p,
    .hero-sub1 { font-size: 1rem; }

    .hero-cta-wrap {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    .hero-scroll-btn { margin-top: 20px; }

    .hero-stats-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-top: 24px;
    }
    .hs-item { text-align: center; }

    /* ── FLOATING CTA ── */
    .floating-cta-wrapper,
    #floating-cta-wrap {
        bottom: 20px;
        right: 16px;
        left: auto;
        transform: none;
    }
    .cta-btn { font-size: 0.85rem; padding: 11px 20px; }
    .top-apply-btn { font-size: 0.8rem; padding: 9px 16px; }

    /* ── STATS ── */
    .section-stats { padding: 40px 0; }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .stat-card { padding: 20px 16px; }
    .stat-number { font-size: 2rem; }

    /* ── PROCESS / TIMELINE ── */
    .verification-timeline {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 0 4px;
    }
    .timeline-step {
        width: 100%;
        flex-direction: row;
        align-items: flex-start;
        gap: 16px;
        padding: 16px 0;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .step-icon-box {
        width: 48px;
        height: 48px;
        min-width: 48px;
        font-size: 1.2rem;
    }
    .step-meta { flex: 1; }
    .step-title { font-size: 0.95rem; margin-bottom: 4px; }
    .step-desc-content { font-size: 0.82rem; }

    .timeline-connector { display: none; }

    /* ── IDENTITY SELECTION MODAL ── */
    .selection-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .selection-card { padding: 24px 20px; }
    .modal-content {
        padding: 24px 20px;
        margin: 0 12px;
        max-width: calc(100vw - 24px);
    }
    .modal-header h3 { font-size: 1.3rem; }

    /* ── EXHIBITION ── */
    .exhibition-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .ex-card { padding: 20px; }

    /* ── CATEGORY GRID ── */
    .category-grid { grid-template-columns: 1fr; }
    .category-card { padding: 24px 20px; }

    /* ── TEAM ── */
    .team-scroll-wrapper { padding: 0 16px; }
    .team-grid {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 16px;
        padding-bottom: 12px;
        scroll-snap-type: x mandatory;
    }
    .team-card {
        min-width: 220px;
        max-width: 220px;
        scroll-snap-align: start;
        flex-shrink: 0;
    }

    /* ── STARTUP CARDS ── */
    .startup-card { padding: 16px; }
    .card-inner {
        flex-direction: column;
        gap: 16px;
    }
    .startup-logo { align-items: center; }
    .startup-info,
    .startup-performance,
    .startup-status-container {
        width: 100% !important;
        border-left: none !important;
        padding-left: 0 !important;
    }
    .patent-data-bar { flex-wrap: wrap; }

    /* ── INVESTOR CARDS ── */
    .investor-card { height: auto !important; }
    .investor-card .card-inner {
        flex-direction: column;
        gap: 16px;
        padding: 20px 16px;
    }
    .partner-basic,
    .partner-resource,
    .partner-performance,
    .partner-labels-status {
        width: 100% !important;
        border-left: none !important;
        padding-left: 0 !important;
    }
    .albit-match-box { text-align: left; }
    .capability-tags { justify-content: flex-start; }

    /* ── ALBIT MODAL (request modal) ── */
    .albit-modal .modal-content {
        width: calc(100vw - 24px);
        max-width: 100%;
        padding: 20px 16px;
        margin: 12px;
        max-height: 90vh;
        overflow-y: auto;
    }
    .form-grid {
        grid-template-columns: 1fr !important;
    }
    .form-group.full-width { grid-column: auto; }

    /* ── APPLY FORMS ── */
    .form-section .container { padding: 0 16px; }
    .glass-lv4,
    .glass-lv1 {
        padding: 24px 16px !important;
        margin: 12px 0;
    }
    .input-group { margin-bottom: 16px; }
    .form-row-dual { grid-template-columns: 1fr !important; }
    .grid-3-col { grid-template-columns: 1fr !important; }
    .tag-selector { gap: 8px; }
    .tag-item span { font-size: 0.8rem; padding: 6px 12px; }

    /* ── SOLUTION ROW ── */
    .solution-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .solution-row .checkbox-custom { align-self: flex-end; }

    /* ── FOOTER ── */
    .main-footer { padding: 30px 0 20px; }
    .footer-container {
        flex-direction: column;
        gap: 16px;
        padding: 0 20px;
    }
    .footer-top-row {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .footer-line { display: none; }
    .footer-links {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }
    .footer-item { font-size: 0.82rem; }
    .copyright { font-size: 0.78rem; }

    /* ── SECTION TITLES ── */
    .section-title,
    h2.text-grad-blue-purple,
    h2.text-grad-blue-male,
    h2.text-grad-neon-blue {
        font-size: 1.7rem !important;
    }
    .section-subtitle { font-size: 0.9rem; }

    /* ── ADMIN TABLE ── */
    .admin-table { display: block; overflow-x: auto; }
    .admin-table th,
    .admin-table td { font-size: 0.82rem; min-width: 100px; }
    .tabs { overflow-x: auto; white-space: nowrap; padding-bottom: 5px; }

    /* ── LABEL BOX ── */
    .label-box { font-size: 0.78rem; padding: 5px 12px; }

    /* ── GLASS LV2 CARDS ── */
    .glass-lv2 { padding: 16px; }
}


/* ══════════════════════════════════════
   SMALL MOBILE  (max-width: 480px)
══════════════════════════════════════ */
@media (max-width: 480px) {

    .container { padding: 0 14px; }

    .hero h1,
    .hero-title { font-size: 1.75rem; }

    .hero p { font-size: 0.9rem; }

    .cta-btn,
    .btn-primary {
        width: 100%;
        padding: 14px;
        text-align: center;
        justify-content: center;
    }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-card { padding: 16px 12px; }
    .stat-number { font-size: 1.7rem; }

    .section-title,
    h2.text-grad-blue-purple,
    h2.text-grad-blue-male,
    h2.text-grad-neon-blue {
        font-size: 1.45rem !important;
    }

    .ex-card { padding: 16px; }
    .team-card { min-width: 190px; max-width: 190px; }

    .glass-lv4,
    .glass-lv1 { padding: 18px 14px !important; }

    /* 모달 전체화면에 가깝게 */
    .modal-content,
    .albit-modal .modal-content {
        width: 100%;
        margin: 0;
        border-radius: 16px 16px 0 0;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 92vh;
    }
    .modal-overlay,
    .albit-modal {
        align-items: flex-end;
    }
}