.auth-screen {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #0b141a;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
}

.auth-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 440px;
    padding: 36px 32px;
    text-align: center;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.auth-logo-badge {
    width: 56px;
    height: 56px;
    background-color: var(--primary);
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.auth-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.auth-subtitle {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 26px;
}

.phone-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    width: 100%;
    box-sizing: border-box;
}

.country-select {
    width: 105px;
    min-width: 85px;
    flex-shrink: 0;
    padding: 12px 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface-secondary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.88rem;
    outline: none;
    box-sizing: border-box;
}

.phone-number-input {
    flex: 1;
    min-width: 0;
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    outline: none;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.phone-number-input:focus, .country-select:focus {
    border-color: var(--primary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(15, 43, 92, 0.1);
}

/* OTP Boxes */
.otp-inputs-grid {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin: 20px 0;
}

.otp-box {
    width: 48px;
    height: 54px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    background-color: var(--surface-secondary);
    outline: none;
    transition: all 0.2s ease;
}

.otp-box:focus {
    border-color: var(--secondary);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(243, 112, 33, 0.15);
}

.auth-btn-submit {
    width: 100%;
    padding: 12px 20px;
    background-color: var(--primary);
    color: #ffffff;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
    transition: background-color 0.15s ease, transform 0.1s ease;
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-btn-submit:hover {
    background-color: var(--primary-hover);
}

.auth-btn-submit:active {
    transform: scale(0.99);
}

.auth-btn-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.auth-cooldown-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 16px;
}

.auth-resend-link {
    color: var(--secondary);
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.auth-terms {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 20px;
    line-height: 1.4;
}

/* ====================================================
   WHATSAPP-STYLE GROUP INVITE PREVIEW
   ==================================================== */
.invite-preview-wrapper {
    width: 100%;
    max-width: 460px;
    animation: slideUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.invite-card {
    background: var(--surface);
    border-radius: 20px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.28), 0 0 0 1px rgba(255, 255, 255, 0.08);
    padding: 32px 24px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.invite-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background-color: var(--primary);
    z-index: 0;
}

.invite-card-content {
    position: relative;
    z-index: 1;
}

.invite-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(15, 43, 92, 0.1);
    color: var(--primary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

[data-theme="dark"] .invite-badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--secondary);
}

.invite-group-avatar-wrap {
    position: relative;
    width: 96px;
    height: 96px;
    margin: 0 auto 16px;
}

.invite-group-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    background-color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    border: 3px solid var(--surface);
}

.invite-group-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.3px;
    word-break: break-word;
}

.invite-group-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.invite-group-desc-box {
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    margin-bottom: 20px;
    text-align: left;
}

.invite-group-desc-title {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

.invite-group-desc-text {
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.45;
    word-break: break-word;
}

/* Members Preview Section */
.invite-members-section {
    margin-bottom: 24px;
    text-align: left;
}

.invite-members-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.invite-members-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 130px;
    overflow-y: auto;
    padding: 2px;
}

.invite-member-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    padding: 4px 10px 4px 4px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-primary);
    font-weight: 600;
}

.invite-member-chip-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    object-fit: cover;
}

.invite-member-chip-role {
    font-size: 0.65rem;
    background: rgba(243, 112, 33, 0.15);
    color: var(--secondary);
    padding: 2px 6px;
    border-radius: 8px;
    font-weight: 700;
}

.invite-btn-join {
    width: 100%;
    padding: 13px 20px;
    background-color: var(--whatsapp-green);
    color: #ffffff;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 0.98rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
    transition: background-color 0.15s ease, transform 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.invite-btn-join:hover {
    background-color: var(--whatsapp-green-hover);
}

.invite-btn-join:active {
    transform: scale(0.99);
}

.invite-sticky-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 14px;
    margin-bottom: 16px;
    text-align: left;
}

/* ====================================================
   PWA INSTALL MODAL & BANNER
   ==================================================== */
.pwa-install-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10, 25, 47, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 10000;
    animation: fadeIn 0.25s ease;
}

.pwa-install-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: 0 28px 60px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 440px;
    padding: 32px 26px;
    text-align: center;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.pwa-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.pwa-close-btn:hover {
    background: var(--surface-active);
    color: var(--text-primary);
}

.pwa-app-icon-wrap {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
}

.pwa-app-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    object-fit: contain;
    box-shadow: 0 8px 24px rgba(243, 112, 33, 0.3);
}

.pwa-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.pwa-subtitle {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 20px;
}

.pwa-features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 22px;
    text-align: left;
}

.pwa-feature-item {
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.pwa-feature-icon {
    font-size: 1.1rem;
}

.pwa-btn-install {
    width: 100%;
    padding: 13px 20px;
    background-color: var(--primary);
    color: #ffffff;
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
    transition: background-color 0.15s ease, transform 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 10px;
}

.pwa-btn-install:hover {
    background-color: var(--primary-hover);
}

.pwa-btn-install:active {
    transform: scale(0.99);
}

.pwa-btn-dismiss {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 6px 12px;
    transition: color 0.2s ease;
}

.pwa-btn-dismiss:hover {
    color: var(--text-primary);
}

/* iOS Safari Guide */
.pwa-ios-guide {
    background: var(--surface-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    margin-top: 14px;
    text-align: left;
}

.pwa-ios-step {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.pwa-ios-step:last-child {
    margin-bottom: 0;
}

.pwa-ios-icon {
    width: 26px;
    height: 26px;
    background: var(--surface-active);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

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

@keyframes pulseHighlight {
    0% { transform: scale(1); box-shadow: 0 0 0 rgba(243, 112, 33, 0); }
    50% { transform: scale(1.03); box-shadow: 0 0 20px rgba(243, 112, 33, 0.5); }
    100% { transform: scale(1); box-shadow: 0 0 0 rgba(243, 112, 33, 0); }
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .auth-screen {
        padding: 12px;
    }
    .auth-card {
        padding: 28px 18px;
        width: 100%;
        max-width: 100%;
        border-radius: 20px;
        box-sizing: border-box;
    }
    .auth-title {
        font-size: 1.28rem;
    }
    .auth-subtitle {
        font-size: 0.82rem;
        margin-bottom: 20px;
    }
    .phone-input-group {
        width: 100%;
        gap: 6px;
        box-sizing: border-box;
    }
    .country-select {
        width: 90px;
        min-width: 78px;
        padding: 10px 4px;
        font-size: 0.82rem;
        flex-shrink: 0;
        box-sizing: border-box;
    }
    .phone-number-input {
        min-width: 0;
        width: 100%;
        padding: 10px 10px;
        font-size: 0.95rem;
        letter-spacing: 0.02em;
        box-sizing: border-box;
    }
    .otp-inputs-grid {
        gap: 6px;
        margin: 16px 0;
    }
    .otp-box {
        width: 40px;
        height: 48px;
        font-size: 1.25rem;
        border-radius: 10px;
    }
}