/* ============================================================
   MaziShare App Shell — Mobile-First CSS
   Shared across: Login, Events, Create, Dashboard, QRCode, Join
   ============================================================ */

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
    --bg:           #050508;
    --bg-elevated:  rgba(18, 18, 26, 0.95);
    --bg-card:      rgba(15, 15, 22, 0.85);
    --bg-input:     rgba(255, 255, 255, 0.05);
    --bg-muted:     rgba(255, 255, 255, 0.06);

    --text:         #FFFFFF;
    --text-muted:   #8892A4;
    --text-faint:   #475569;

    --accent:       #4F46E5;
    --accent-light: #818CF8;
    --accent-glow:  rgba(79, 70, 229, 0.35);
    --accent-2:     #06B6D4;

    --success:      #10B981;
    --error:        #EF4444;
    --warning:      #F59E0B;

    --border:       rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.14);
    --border-focus: rgba(99, 102, 241, 0.6);

    --radius-sm:    10px;
    --radius-md:    16px;
    --radius-lg:    20px;
    --radius-xl:    24px;

    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);

    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-top:    env(safe-area-inset-top, 0px);
}

/* ── Base ───────────────────────────────────────────────────── */
html {
    height: 100%;
    /* Prevent elastic scroll on iOS causing white flash */
    background: var(--bg);
}

body.app-body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px; /* Never below 16px — prevents iOS auto-zoom */
    line-height: 1.5;
    height: 100dvh; /* dvh = dynamic viewport height, fixes iOS Safari toolbar */
    overflow: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* ── App Page Shell ─────────────────────────────────────────── */
.app-page {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    overflow: hidden;
    position: relative;
}

/* Scrollable content area inside a page */
.app-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding-bottom: calc(24px + var(--safe-bottom));
    overscroll-behavior-y: contain;
}

/* ── Background Glow Orbs ───────────────────────────────────── */
.app-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: 0;
    animation: orb-drift 20s infinite alternate ease-in-out;
}
.app-orb-1 {
    width: 380px; height: 380px;
    background: rgba(79, 70, 229, 0.22);
    top: -120px; left: -80px;
}
.app-orb-2 {
    width: 300px; height: 300px;
    background: rgba(6, 182, 212, 0.16);
    bottom: -60px; right: -60px;
    animation-delay: -8s;
}
@keyframes orb-drift {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 40px) scale(1.08); }
}

/* Content sits above orbs */
.app-page > * { position: relative; z-index: 1; }

/* ── Top Navigation Bar ─────────────────────────────────────── */
.app-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    padding: 0 16px;
    padding-top: var(--safe-top);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    background: rgba(5, 5, 8, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.app-nav-title {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.app-nav-action {
    background: none;
    border: none;
    color: var(--text);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition);
}
.app-nav-action:active { background: var(--bg-muted); }

/* Back button chevron */
.app-back-btn {
    color: var(--accent-light);
    font-size: 15px;
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 0;
    transition: opacity var(--transition);
}
.app-back-btn:active { opacity: 0.6; }

/* ── Logo Mark ──────────────────────────────────────────────── */
.app-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: -0.03em;
}
.app-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-radius: 10px;
    box-shadow: 0 0 18px var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ── Glass Card ─────────────────────────────────────────────── */
.app-card {
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 24px;
}

.app-card-hover {
    transition: border-color var(--transition), transform var(--transition);
}
.app-card-hover:active {
    border-color: var(--border-hover);
    transform: scale(0.985);
}

/* ── Section Label ──────────────────────────────────────────── */
.app-section-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-faint);
    margin-bottom: 10px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    height: 54px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.45; pointer-events: none; }

/* Primary — indigo */
.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 24px rgba(79, 70, 229, 0.3);
}
.btn-primary:active {
    box-shadow: 0 2px 12px rgba(79, 70, 229, 0.2);
}

/* Secondary — ghost glass */
.btn-secondary {
    background: var(--bg-muted);
    border: 1px solid var(--border);
    color: var(--text);
}
.btn-secondary:active { background: rgba(255,255,255,0.1); }

/* Danger */
.btn-danger {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

/* Icon button (small square) */
.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-muted);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    transition: background var(--transition);
    flex-shrink: 0;
}
.btn-icon:active { background: rgba(255,255,255,0.12); }

/* Loading state inside button */
.btn .btn-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    flex-shrink: 0;
}
.btn .btn-label { transition: opacity var(--transition); }
.btn.loading .btn-label { opacity: 0; }
.btn.loading .btn-spinner { display: block; }
.btn .btn-spinner { display: none; }

/* Text link button */
.btn-link {
    background: none;
    border: none;
    color: var(--accent-light);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 8px;
    transition: opacity var(--transition);
    font-family: var(--font);
}
.btn-link:active { opacity: 0.6; }

/* ── Input Fields ───────────────────────────────────────────── */
.app-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px; /* MUST stay 16px — prevents iOS zoom */
    font-weight: 500;
    padding: 16px;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-appearance: none;
    appearance: none;
}
.app-input::placeholder { color: var(--text-faint); }
.app-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* Code-style input (large, centered, all-caps) */
.app-input-code {
    text-align: center;
    font-size: 28px;
    font-weight: 900;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    height: 70px;
}

/* Input with label */
.app-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.app-field-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}
.app-field-error {
    font-size: 13px;
    color: var(--error);
    display: none;
}
.app-field.has-error .app-input { border-color: var(--error); }
.app-field.has-error .app-field-error { display: block; }

/* ── Pills & Badges ─────────────────────────────────────────── */
.code-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--accent-light);
    padding: 4px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.2em;
}

.provider-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
}
.provider-pill.google  { background: rgba(66, 133, 244, 0.12); color: #60A5FA; }
.provider-pill.dropbox { background: rgba(0, 97, 254, 0.12);   color: #93C5FD; }
.provider-pill.guest   { background: rgba(16, 185, 129, 0.12); color: #6EE7B7; }

.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
    animation: pulse-dot 2s infinite;
    display: inline-block;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(1.4); }
}

/* ── Sticky Bottom Bar ──────────────────────────────────────── */
.app-bottom-bar {
    padding: 12px 16px;
    padding-bottom: calc(12px + var(--safe-bottom));
    border-top: 1px solid var(--border);
    background: rgba(5, 5, 8, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

/* ── Toast Notifications ────────────────────────────────────── */
#app-toast {
    position: fixed;
    bottom: calc(24px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    max-width: calc(100vw - 48px);
    min-width: 220px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s, transform 0.25s;
    white-space: nowrap;
    backdrop-filter: blur(16px);
}
#app-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
#app-toast.success { background: rgba(16, 185, 129, 0.15); border: 1px solid rgba(16, 185, 129, 0.4); color: #6EE7B7; }
#app-toast.error   { background: rgba(239, 68, 68, 0.15);  border: 1px solid rgba(239, 68, 68, 0.4);  color: #FCA5A5; }
#app-toast.info    { background: rgba(79, 70, 229, 0.15);  border: 1px solid rgba(79, 70, 229, 0.4);  color: var(--accent-light); }

/* ── Loading Spinner (standalone) ───────────────────────────── */
.app-spinner {
    width: 28px; height: 28px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-light);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
.app-spinner-sm { width: 18px; height: 18px; border-width: 2px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Full page loading overlay */
.app-loading-overlay {
    position: fixed; inset: 0;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 9000;
    transition: opacity 0.3s;
}
.app-loading-overlay.hidden { opacity: 0; pointer-events: none; }

/* ── Empty State ────────────────────────────────────────────── */
.app-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 48px 24px;
    gap: 12px;
}
.app-empty-icon {
    width: 64px; height: 64px;
    border-radius: 18px;
    background: var(--bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
}
.app-empty-title { font-size: 18px; font-weight: 700; }
.app-empty-subtitle { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* ── Divider ────────────────────────────────────────────────── */
.app-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-faint);
    font-size: 13px;
}
.app-divider::before,
.app-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ── Progress Bar ───────────────────────────────────────────── */
.app-progress-wrap {
    background: var(--bg-muted);
    border-radius: 999px;
    height: 6px;
    overflow: hidden;
}
.app-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 999px;
    transition: width 0.25s ease;
}

/* ── Screen (multi-screen pattern, like Camera.cshtml) ──────── */
.screen {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
    transform: translateX(20px);
    display: flex;
    flex-direction: column;
}
.screen.active {
    opacity: 1;
    pointer-events: all;
    transform: translateX(0);
}
.screen.slide-back { transform: translateX(-20px); }

/* ── Avatar / Initial Circle ────────────────────────────────── */
.app-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
    cursor: pointer;
}

/* ── Bottom Sheet ───────────────────────────────────────────── */
.app-sheet-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s;
}
.app-sheet-backdrop.open { opacity: 1; pointer-events: all; }

.app-sheet {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 16px 20px;
    padding-bottom: calc(20px + var(--safe-bottom));
    z-index: 501;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.app-sheet.open { transform: translateY(0); }

.app-sheet-handle {
    width: 36px; height: 4px;
    background: var(--border-hover);
    border-radius: 2px;
    margin: 0 auto 20px;
}

.app-sheet-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: opacity var(--transition);
}
.app-sheet-item:last-child { border-bottom: none; }
.app-sheet-item:active { opacity: 0.6; }
.app-sheet-item.danger { color: var(--error); }

/* ── Utility ────────────────────────────────────────────────── */
.hidden   { display: none !important; }
.sr-only  { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.flex-row { display: flex; align-items: center; }
.flex-col { display: flex; flex-direction: column; }
.gap-8    { gap: 8px; }
.gap-12   { gap: 12px; }
.gap-16   { gap: 16px; }
.p-16     { padding: 16px; }
.p-20     { padding: 20px; }
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); font-size: 14px; }
.fw-700  { font-weight: 700; }
.mt-auto { margin-top: auto; }

/* ── Pull to Refresh ────────────────────────────────────────── */
@keyframes loading-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.loading-spin {
    animation: loading-spin 1s linear infinite;
}

.ptr-indicator {
    height: 0;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
    transition: height 0.2s ease, opacity 0.2s;
    opacity: 0;
    width: 100%;
}
.ptr-indicator.ready .app-spinner {
    border-top-color: var(--success);
}
.ptr-indicator.active {
    opacity: 1;
}

/* ── PWA Install Banner ─────────────────────────────────────── */
#pwa-install-banner {
    position: fixed;
    bottom: calc(16px + var(--safe-bottom));
    left: 12px;
    right: 12px;
    background: var(--bg-elevated);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-xl);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 9999;
    box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
    transform: translateY(120%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

#pwa-install-banner.visible {
    transform: translateY(0);
}

.pwa-banner-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.pwa-banner-text {
    flex: 1;
}

.pwa-btn-install {
    transition: transform 0.2s, background 0.2s;
}

.pwa-btn-install:active {
    transform: scale(0.95);
}

.pwa-btn-close:active {
    opacity: 0.5;
}

@media (min-width: 600px) {
    #pwa-install-banner {
        left: auto;
        right: 24px;
        width: 400px;
    }
}